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!! |
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!! Copyright (c) 2005 The University of Notre Dame. All Rights Reserved. |
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!! |
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!! The University of Notre Dame grants you ("Licensee") a |
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!! non-exclusive, royalty free, license to use, modify and |
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!! redistribute this software in source and binary code form, provided |
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!! that the following conditions are met: |
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!! |
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!! 1. Acknowledgement of the program authors must be made in any |
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!! publication of scientific results based in part on use of the |
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!! program. An acceptable form of acknowledgement is citation of |
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!! the article in which the program was described (Matthew |
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!! A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher |
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!! J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented |
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!! Parallel Simulation Engine for Molecular Dynamics," |
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!! J. Comput. Chem. 26, pp. 252-271 (2005)) |
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!! |
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!! 2. Redistributions of source code must retain the above copyright |
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!! notice, this list of conditions and the following disclaimer. |
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!! |
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!! 3. Redistributions in binary form must reproduce the above copyright |
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!! notice, this list of conditions and the following disclaimer in the |
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!! documentation and/or other materials provided with the |
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!! distribution. |
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!! |
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!! This software is provided "AS IS," without a warranty of any |
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!! kind. All express or implied conditions, representations and |
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!! warranties, including any implied warranty of merchantability, |
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!! fitness for a particular purpose or non-infringement, are hereby |
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!! excluded. The University of Notre Dame and its licensors shall not |
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!! be liable for any damages suffered by licensee as a result of |
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!! using, modifying or distributing the software or its |
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!! derivatives. In no event will the University of Notre Dame or its |
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!! licensors be liable for any lost revenue, profit or data, or for |
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!! direct, indirect, special, consequential, incidental or punitive |
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!! damages, however caused and regardless of the theory of liability, |
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!! arising out of the use of or inability to use software, even if the |
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!! University of Notre Dame has been advised of the possibility of |
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!! such damages. |
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!! |
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|
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module electrostatic_module |
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|
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use force_globals |
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use definitions |
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use atype_module |
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use vector_class |
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use simulation |
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use status |
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#ifdef IS_MPI |
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use mpiSimulation |
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#endif |
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implicit none |
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|
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PRIVATE |
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|
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|
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#define __FORTRAN90 |
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#include "UseTheForce/DarkSide/fInteractionMap.h" |
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#include "UseTheForce/DarkSide/fElectrostaticSummationMethod.h" |
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#include "UseTheForce/DarkSide/fElectrostaticScreeningMethod.h" |
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|
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|
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!! these prefactors convert the multipole interactions into kcal / mol |
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!! all were computed assuming distances are measured in angstroms |
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!! Charge-Charge, assuming charges are measured in electrons |
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real(kind=dp), parameter :: pre11 = 332.0637778_dp |
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!! Charge-Dipole, assuming charges are measured in electrons, and |
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!! dipoles are measured in debyes |
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real(kind=dp), parameter :: pre12 = 69.13373_dp |
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!! Dipole-Dipole, assuming dipoles are measured in debyes |
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real(kind=dp), parameter :: pre22 = 14.39325_dp |
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!! Charge-Quadrupole, assuming charges are measured in electrons, and |
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!! quadrupoles are measured in 10^-26 esu cm^2 |
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!! This unit is also known affectionately as an esu centi-barn. |
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real(kind=dp), parameter :: pre14 = 69.13373_dp |
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|
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!! variables to handle different summation methods for long-range |
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!! electrostatics: |
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integer, save :: summationMethod = NONE |
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integer, save :: screeningMethod = UNDAMPED |
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logical, save :: summationMethodChecked = .false. |
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real(kind=DP), save :: defaultCutoff = 0.0_DP |
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real(kind=DP), save :: defaultCutoff2 = 0.0_DP |
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logical, save :: haveDefaultCutoff = .false. |
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real(kind=DP), save :: dampingAlpha = 0.0_DP |
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real(kind=DP), save :: alpha2 = 0.0_DP |
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logical, save :: haveDampingAlpha = .false. |
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real(kind=DP), save :: dielectric = 1.0_DP |
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logical, save :: haveDielectric = .false. |
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real(kind=DP), save :: constEXP = 0.0_DP |
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real(kind=dp), save :: rcuti = 0.0_DP |
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real(kind=dp), save :: rcuti2 = 0.0_DP |
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real(kind=dp), save :: rcuti3 = 0.0_DP |
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real(kind=dp), save :: rcuti4 = 0.0_DP |
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real(kind=dp), save :: alphaPi = 0.0_DP |
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real(kind=dp), save :: invRootPi = 0.0_DP |
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real(kind=dp), save :: rrf = 1.0_DP |
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real(kind=dp), save :: rt = 1.0_DP |
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real(kind=dp), save :: rrfsq = 1.0_DP |
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real(kind=dp), save :: preRF = 0.0_DP |
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real(kind=dp), save :: preRF2 = 0.0_DP |
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real(kind=dp), save :: f0 = 1.0_DP |
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real(kind=dp), save :: f1 = 1.0_DP |
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real(kind=dp), save :: f2 = 0.0_DP |
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real(kind=dp), save :: f0c = 1.0_DP |
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real(kind=dp), save :: f1c = 1.0_DP |
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real(kind=dp), save :: f2c = 0.0_DP |
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|
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#ifdef __IFC |
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! error function for ifc version > 7. |
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double precision, external :: derfc |
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#endif |
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|
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public :: setElectrostaticSummationMethod |
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public :: setScreeningMethod |
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public :: setElectrostaticCutoffRadius |
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public :: setDampingAlpha |
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public :: setReactionFieldDielectric |
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public :: newElectrostaticType |
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public :: setCharge |
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public :: setDipoleMoment |
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public :: setSplitDipoleDistance |
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public :: setQuadrupoleMoments |
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public :: doElectrostaticPair |
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public :: getCharge |
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public :: getDipoleMoment |
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public :: destroyElectrostaticTypes |
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public :: self_self |
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public :: rf_self_excludes |
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|
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type :: Electrostatic |
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integer :: c_ident |
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logical :: is_Charge = .false. |
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logical :: is_Dipole = .false. |
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logical :: is_SplitDipole = .false. |
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logical :: is_Quadrupole = .false. |
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logical :: is_Tap = .false. |
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real(kind=DP) :: charge = 0.0_DP |
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real(kind=DP) :: dipole_moment = 0.0_DP |
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real(kind=DP) :: split_dipole_distance = 0.0_DP |
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real(kind=DP), dimension(3) :: quadrupole_moments = 0.0_DP |
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end type Electrostatic |
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|
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type(Electrostatic), dimension(:), allocatable :: ElectrostaticMap |
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|
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contains |
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|
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subroutine setElectrostaticSummationMethod(the_ESM) |
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integer, intent(in) :: the_ESM |
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|
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if ((the_ESM .le. 0) .or. (the_ESM .gt. REACTION_FIELD)) then |
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call handleError("setElectrostaticSummationMethod", "Unsupported Summation Method") |
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endif |
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|
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summationMethod = the_ESM |
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|
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end subroutine setElectrostaticSummationMethod |
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|
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subroutine setScreeningMethod(the_SM) |
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integer, intent(in) :: the_SM |
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screeningMethod = the_SM |
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end subroutine setScreeningMethod |
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|
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subroutine setElectrostaticCutoffRadius(thisRcut, thisRsw) |
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real(kind=dp), intent(in) :: thisRcut |
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real(kind=dp), intent(in) :: thisRsw |
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defaultCutoff = thisRcut |
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rrf = defaultCutoff |
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rt = thisRsw |
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haveDefaultCutoff = .true. |
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end subroutine setElectrostaticCutoffRadius |
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|
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subroutine setDampingAlpha(thisAlpha) |
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real(kind=dp), intent(in) :: thisAlpha |
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dampingAlpha = thisAlpha |
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alpha2 = dampingAlpha*dampingAlpha |
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haveDampingAlpha = .true. |
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end subroutine setDampingAlpha |
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|
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subroutine setReactionFieldDielectric(thisDielectric) |
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real(kind=dp), intent(in) :: thisDielectric |
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dielectric = thisDielectric |
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haveDielectric = .true. |
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end subroutine setReactionFieldDielectric |
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|
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subroutine newElectrostaticType(c_ident, is_Charge, is_Dipole, & |
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is_SplitDipole, is_Quadrupole, is_Tap, status) |
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|
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integer, intent(in) :: c_ident |
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logical, intent(in) :: is_Charge |
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logical, intent(in) :: is_Dipole |
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logical, intent(in) :: is_SplitDipole |
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logical, intent(in) :: is_Quadrupole |
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logical, intent(in) :: is_Tap |
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integer, intent(out) :: status |
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integer :: nAtypes, myATID, i, j |
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|
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status = 0 |
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myATID = getFirstMatchingElement(atypes, "c_ident", c_ident) |
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|
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!! Be simple-minded and assume that we need an ElectrostaticMap that |
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!! is the same size as the total number of atom types |
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|
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if (.not.allocated(ElectrostaticMap)) then |
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|
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nAtypes = getSize(atypes) |
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|
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if (nAtypes == 0) then |
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status = -1 |
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return |
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end if |
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|
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if (.not. allocated(ElectrostaticMap)) then |
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allocate(ElectrostaticMap(nAtypes)) |
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endif |
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|
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end if |
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|
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if (myATID .gt. size(ElectrostaticMap)) then |
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status = -1 |
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return |
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endif |
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|
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! set the values for ElectrostaticMap for this atom type: |
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|
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ElectrostaticMap(myATID)%c_ident = c_ident |
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ElectrostaticMap(myATID)%is_Charge = is_Charge |
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ElectrostaticMap(myATID)%is_Dipole = is_Dipole |
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ElectrostaticMap(myATID)%is_SplitDipole = is_SplitDipole |
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ElectrostaticMap(myATID)%is_Quadrupole = is_Quadrupole |
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ElectrostaticMap(myATID)%is_Tap = is_Tap |
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|
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end subroutine newElectrostaticType |
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|
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subroutine setCharge(c_ident, charge, status) |
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integer, intent(in) :: c_ident |
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real(kind=dp), intent(in) :: charge |
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integer, intent(out) :: status |
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integer :: myATID |
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|
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status = 0 |
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myATID = getFirstMatchingElement(atypes, "c_ident", c_ident) |
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|
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if (.not.allocated(ElectrostaticMap)) then |
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call handleError("electrostatic", "no ElectrostaticMap was present before first call of setCharge!") |
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status = -1 |
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return |
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end if |
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|
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if (myATID .gt. size(ElectrostaticMap)) then |
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call handleError("electrostatic", "ElectrostaticMap was found to be too small during setCharge!") |
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status = -1 |
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return |
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endif |
256 |
|
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if (.not.ElectrostaticMap(myATID)%is_Charge) then |
258 |
call handleError("electrostatic", "Attempt to setCharge of an atom type that is not a charge!") |
259 |
status = -1 |
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return |
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endif |
262 |
|
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ElectrostaticMap(myATID)%charge = charge |
264 |
end subroutine setCharge |
265 |
|
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subroutine setDipoleMoment(c_ident, dipole_moment, status) |
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integer, intent(in) :: c_ident |
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real(kind=dp), intent(in) :: dipole_moment |
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integer, intent(out) :: status |
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integer :: myATID |
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|
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status = 0 |
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myATID = getFirstMatchingElement(atypes, "c_ident", c_ident) |
274 |
|
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if (.not.allocated(ElectrostaticMap)) then |
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call handleError("electrostatic", "no ElectrostaticMap was present before first call of setDipoleMoment!") |
277 |
status = -1 |
278 |
return |
279 |
end if |
280 |
|
281 |
if (myATID .gt. size(ElectrostaticMap)) then |
282 |
call handleError("electrostatic", "ElectrostaticMap was found to be too small during setDipoleMoment!") |
283 |
status = -1 |
284 |
return |
285 |
endif |
286 |
|
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if (.not.ElectrostaticMap(myATID)%is_Dipole) then |
288 |
call handleError("electrostatic", "Attempt to setDipoleMoment of an atom type that is not a dipole!") |
289 |
status = -1 |
290 |
return |
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endif |
292 |
|
293 |
ElectrostaticMap(myATID)%dipole_moment = dipole_moment |
294 |
end subroutine setDipoleMoment |
295 |
|
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subroutine setSplitDipoleDistance(c_ident, split_dipole_distance, status) |
297 |
integer, intent(in) :: c_ident |
298 |
real(kind=dp), intent(in) :: split_dipole_distance |
299 |
integer, intent(out) :: status |
300 |
integer :: myATID |
301 |
|
302 |
status = 0 |
303 |
myATID = getFirstMatchingElement(atypes, "c_ident", c_ident) |
304 |
|
305 |
if (.not.allocated(ElectrostaticMap)) then |
306 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of setSplitDipoleDistance!") |
307 |
status = -1 |
308 |
return |
309 |
end if |
310 |
|
311 |
if (myATID .gt. size(ElectrostaticMap)) then |
312 |
call handleError("electrostatic", "ElectrostaticMap was found to be too small during setSplitDipoleDistance!") |
313 |
status = -1 |
314 |
return |
315 |
endif |
316 |
|
317 |
if (.not.ElectrostaticMap(myATID)%is_SplitDipole) then |
318 |
call handleError("electrostatic", "Attempt to setSplitDipoleDistance of an atom type that is not a splitDipole!") |
319 |
status = -1 |
320 |
return |
321 |
endif |
322 |
|
323 |
ElectrostaticMap(myATID)%split_dipole_distance = split_dipole_distance |
324 |
end subroutine setSplitDipoleDistance |
325 |
|
326 |
subroutine setQuadrupoleMoments(c_ident, quadrupole_moments, status) |
327 |
integer, intent(in) :: c_ident |
328 |
real(kind=dp), intent(in), dimension(3) :: quadrupole_moments |
329 |
integer, intent(out) :: status |
330 |
integer :: myATID, i, j |
331 |
|
332 |
status = 0 |
333 |
myATID = getFirstMatchingElement(atypes, "c_ident", c_ident) |
334 |
|
335 |
if (.not.allocated(ElectrostaticMap)) then |
336 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of setQuadrupoleMoments!") |
337 |
status = -1 |
338 |
return |
339 |
end if |
340 |
|
341 |
if (myATID .gt. size(ElectrostaticMap)) then |
342 |
call handleError("electrostatic", "ElectrostaticMap was found to be too small during setQuadrupoleMoments!") |
343 |
status = -1 |
344 |
return |
345 |
endif |
346 |
|
347 |
if (.not.ElectrostaticMap(myATID)%is_Quadrupole) then |
348 |
call handleError("electrostatic", "Attempt to setQuadrupoleMoments of an atom type that is not a quadrupole!") |
349 |
status = -1 |
350 |
return |
351 |
endif |
352 |
|
353 |
do i = 1, 3 |
354 |
ElectrostaticMap(myATID)%quadrupole_moments(i) = & |
355 |
quadrupole_moments(i) |
356 |
enddo |
357 |
|
358 |
end subroutine setQuadrupoleMoments |
359 |
|
360 |
|
361 |
function getCharge(atid) result (c) |
362 |
integer, intent(in) :: atid |
363 |
integer :: localError |
364 |
real(kind=dp) :: c |
365 |
|
366 |
if (.not.allocated(ElectrostaticMap)) then |
367 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of getCharge!") |
368 |
return |
369 |
end if |
370 |
|
371 |
if (.not.ElectrostaticMap(atid)%is_Charge) then |
372 |
call handleError("electrostatic", "getCharge was called for an atom type that isn't a charge!") |
373 |
return |
374 |
endif |
375 |
|
376 |
c = ElectrostaticMap(atid)%charge |
377 |
end function getCharge |
378 |
|
379 |
function getDipoleMoment(atid) result (dm) |
380 |
integer, intent(in) :: atid |
381 |
integer :: localError |
382 |
real(kind=dp) :: dm |
383 |
|
384 |
if (.not.allocated(ElectrostaticMap)) then |
385 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of getDipoleMoment!") |
386 |
return |
387 |
end if |
388 |
|
389 |
if (.not.ElectrostaticMap(atid)%is_Dipole) then |
390 |
call handleError("electrostatic", "getDipoleMoment was called for an atom type that isn't a dipole!") |
391 |
return |
392 |
endif |
393 |
|
394 |
dm = ElectrostaticMap(atid)%dipole_moment |
395 |
end function getDipoleMoment |
396 |
|
397 |
subroutine checkSummationMethod() |
398 |
|
399 |
if (.not.haveDefaultCutoff) then |
400 |
call handleError("checkSummationMethod", "no Default Cutoff set!") |
401 |
endif |
402 |
|
403 |
rcuti = 1.0d0 / defaultCutoff |
404 |
rcuti2 = rcuti*rcuti |
405 |
rcuti3 = rcuti2*rcuti |
406 |
rcuti4 = rcuti2*rcuti2 |
407 |
|
408 |
if (screeningMethod .eq. DAMPED) then |
409 |
if (.not.haveDampingAlpha) then |
410 |
call handleError("checkSummationMethod", "no Damping Alpha set!") |
411 |
endif |
412 |
|
413 |
if (.not.haveDefaultCutoff) then |
414 |
call handleError("checkSummationMethod", "no Default Cutoff set!") |
415 |
endif |
416 |
|
417 |
constEXP = exp(-alpha2*defaultCutoff*defaultCutoff) |
418 |
invRootPi = 0.56418958354775628695d0 |
419 |
alphaPi = 2.0d0*dampingAlpha*invRootPi |
420 |
f0c = derfc(dampingAlpha*defaultCutoff) |
421 |
f1c = alphaPi*defaultCutoff*constEXP + f0c |
422 |
f2c = alphaPi*2.0d0*alpha2*constEXP*rcuti2 |
423 |
|
424 |
endif |
425 |
|
426 |
if (summationMethod .eq. REACTION_FIELD) then |
427 |
if (haveDielectric) then |
428 |
defaultCutoff2 = defaultCutoff*defaultCutoff |
429 |
preRF = (dielectric-1.0d0) / & |
430 |
((2.0d0*dielectric+1.0d0)*defaultCutoff2*defaultCutoff) |
431 |
preRF2 = 2.0d0*preRF |
432 |
else |
433 |
call handleError("checkSummationMethod", "Dielectric not set") |
434 |
endif |
435 |
|
436 |
endif |
437 |
|
438 |
summationMethodChecked = .true. |
439 |
end subroutine checkSummationMethod |
440 |
|
441 |
|
442 |
subroutine doElectrostaticPair(atom1, atom2, d, rij, r2, sw, & |
443 |
vpair, fpair, pot, eFrame, f, t, do_pot) |
444 |
|
445 |
logical, intent(in) :: do_pot |
446 |
|
447 |
integer, intent(in) :: atom1, atom2 |
448 |
integer :: localError |
449 |
|
450 |
real(kind=dp), intent(in) :: rij, r2, sw |
451 |
real(kind=dp), intent(in), dimension(3) :: d |
452 |
real(kind=dp), intent(inout) :: vpair |
453 |
real(kind=dp), intent(inout), dimension(3) :: fpair |
454 |
|
455 |
real( kind = dp ) :: pot |
456 |
real( kind = dp ), dimension(9,nLocal) :: eFrame |
457 |
real( kind = dp ), dimension(3,nLocal) :: f |
458 |
real( kind = dp ), dimension(3,nLocal) :: felec |
459 |
real( kind = dp ), dimension(3,nLocal) :: t |
460 |
|
461 |
real (kind = dp), dimension(3) :: ux_i, uy_i, uz_i |
462 |
real (kind = dp), dimension(3) :: ux_j, uy_j, uz_j |
463 |
real (kind = dp), dimension(3) :: dudux_i, duduy_i, duduz_i |
464 |
real (kind = dp), dimension(3) :: dudux_j, duduy_j, duduz_j |
465 |
|
466 |
logical :: i_is_Charge, i_is_Dipole, i_is_SplitDipole, i_is_Quadrupole |
467 |
logical :: j_is_Charge, j_is_Dipole, j_is_SplitDipole, j_is_Quadrupole |
468 |
logical :: i_is_Tap, j_is_Tap |
469 |
integer :: me1, me2, id1, id2 |
470 |
real (kind=dp) :: q_i, q_j, mu_i, mu_j, d_i, d_j |
471 |
real (kind=dp) :: qxx_i, qyy_i, qzz_i |
472 |
real (kind=dp) :: qxx_j, qyy_j, qzz_j |
473 |
real (kind=dp) :: cx_i, cy_i, cz_i |
474 |
real (kind=dp) :: cx_j, cy_j, cz_j |
475 |
real (kind=dp) :: cx2, cy2, cz2 |
476 |
real (kind=dp) :: ct_i, ct_j, ct_ij, a0, a1 |
477 |
real (kind=dp) :: riji, ri, ri2, ri3, ri4 |
478 |
real (kind=dp) :: pref, vterm, epot, dudr, vterm1, vterm2 |
479 |
real (kind=dp) :: xhat, yhat, zhat |
480 |
real (kind=dp) :: dudx, dudy, dudz |
481 |
real (kind=dp) :: scale, sc2, bigR |
482 |
real (kind=dp) :: varEXP |
483 |
real (kind=dp) :: pot_term |
484 |
real (kind=dp) :: preVal, rfVal |
485 |
|
486 |
if (.not.allocated(ElectrostaticMap)) then |
487 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of do_electrostatic_pair!") |
488 |
return |
489 |
end if |
490 |
|
491 |
if (.not.summationMethodChecked) then |
492 |
call checkSummationMethod() |
493 |
endif |
494 |
|
495 |
#ifdef IS_MPI |
496 |
me1 = atid_Row(atom1) |
497 |
me2 = atid_Col(atom2) |
498 |
#else |
499 |
me1 = atid(atom1) |
500 |
me2 = atid(atom2) |
501 |
#endif |
502 |
|
503 |
!!$ if (rij .ge. defaultCutoff) then |
504 |
!!$ write(*,*) 'warning: rij = ', rij, ' rcut = ', defaultCutoff, ' sw = ', sw |
505 |
!!$ endif |
506 |
|
507 |
!! some variables we'll need independent of electrostatic type: |
508 |
|
509 |
riji = 1.0d0 / rij |
510 |
|
511 |
xhat = d(1) * riji |
512 |
yhat = d(2) * riji |
513 |
zhat = d(3) * riji |
514 |
|
515 |
!! logicals |
516 |
i_is_Charge = ElectrostaticMap(me1)%is_Charge |
517 |
i_is_Dipole = ElectrostaticMap(me1)%is_Dipole |
518 |
i_is_SplitDipole = ElectrostaticMap(me1)%is_SplitDipole |
519 |
i_is_Quadrupole = ElectrostaticMap(me1)%is_Quadrupole |
520 |
i_is_Tap = ElectrostaticMap(me1)%is_Tap |
521 |
|
522 |
j_is_Charge = ElectrostaticMap(me2)%is_Charge |
523 |
j_is_Dipole = ElectrostaticMap(me2)%is_Dipole |
524 |
j_is_SplitDipole = ElectrostaticMap(me2)%is_SplitDipole |
525 |
j_is_Quadrupole = ElectrostaticMap(me2)%is_Quadrupole |
526 |
j_is_Tap = ElectrostaticMap(me2)%is_Tap |
527 |
|
528 |
if (i_is_Charge) then |
529 |
q_i = ElectrostaticMap(me1)%charge |
530 |
endif |
531 |
|
532 |
if (i_is_Dipole) then |
533 |
mu_i = ElectrostaticMap(me1)%dipole_moment |
534 |
#ifdef IS_MPI |
535 |
uz_i(1) = eFrame_Row(3,atom1) |
536 |
uz_i(2) = eFrame_Row(6,atom1) |
537 |
uz_i(3) = eFrame_Row(9,atom1) |
538 |
#else |
539 |
uz_i(1) = eFrame(3,atom1) |
540 |
uz_i(2) = eFrame(6,atom1) |
541 |
uz_i(3) = eFrame(9,atom1) |
542 |
#endif |
543 |
ct_i = uz_i(1)*xhat + uz_i(2)*yhat + uz_i(3)*zhat |
544 |
|
545 |
if (i_is_SplitDipole) then |
546 |
d_i = ElectrostaticMap(me1)%split_dipole_distance |
547 |
endif |
548 |
|
549 |
endif |
550 |
|
551 |
if (i_is_Quadrupole) then |
552 |
qxx_i = ElectrostaticMap(me1)%quadrupole_moments(1) |
553 |
qyy_i = ElectrostaticMap(me1)%quadrupole_moments(2) |
554 |
qzz_i = ElectrostaticMap(me1)%quadrupole_moments(3) |
555 |
#ifdef IS_MPI |
556 |
ux_i(1) = eFrame_Row(1,atom1) |
557 |
ux_i(2) = eFrame_Row(4,atom1) |
558 |
ux_i(3) = eFrame_Row(7,atom1) |
559 |
uy_i(1) = eFrame_Row(2,atom1) |
560 |
uy_i(2) = eFrame_Row(5,atom1) |
561 |
uy_i(3) = eFrame_Row(8,atom1) |
562 |
uz_i(1) = eFrame_Row(3,atom1) |
563 |
uz_i(2) = eFrame_Row(6,atom1) |
564 |
uz_i(3) = eFrame_Row(9,atom1) |
565 |
#else |
566 |
ux_i(1) = eFrame(1,atom1) |
567 |
ux_i(2) = eFrame(4,atom1) |
568 |
ux_i(3) = eFrame(7,atom1) |
569 |
uy_i(1) = eFrame(2,atom1) |
570 |
uy_i(2) = eFrame(5,atom1) |
571 |
uy_i(3) = eFrame(8,atom1) |
572 |
uz_i(1) = eFrame(3,atom1) |
573 |
uz_i(2) = eFrame(6,atom1) |
574 |
uz_i(3) = eFrame(9,atom1) |
575 |
#endif |
576 |
cx_i = ux_i(1)*xhat + ux_i(2)*yhat + ux_i(3)*zhat |
577 |
cy_i = uy_i(1)*xhat + uy_i(2)*yhat + uy_i(3)*zhat |
578 |
cz_i = uz_i(1)*xhat + uz_i(2)*yhat + uz_i(3)*zhat |
579 |
endif |
580 |
|
581 |
if (j_is_Charge) then |
582 |
q_j = ElectrostaticMap(me2)%charge |
583 |
endif |
584 |
|
585 |
if (j_is_Dipole) then |
586 |
mu_j = ElectrostaticMap(me2)%dipole_moment |
587 |
#ifdef IS_MPI |
588 |
uz_j(1) = eFrame_Col(3,atom2) |
589 |
uz_j(2) = eFrame_Col(6,atom2) |
590 |
uz_j(3) = eFrame_Col(9,atom2) |
591 |
#else |
592 |
uz_j(1) = eFrame(3,atom2) |
593 |
uz_j(2) = eFrame(6,atom2) |
594 |
uz_j(3) = eFrame(9,atom2) |
595 |
#endif |
596 |
ct_j = uz_j(1)*xhat + uz_j(2)*yhat + uz_j(3)*zhat |
597 |
|
598 |
if (j_is_SplitDipole) then |
599 |
d_j = ElectrostaticMap(me2)%split_dipole_distance |
600 |
endif |
601 |
endif |
602 |
|
603 |
if (j_is_Quadrupole) then |
604 |
qxx_j = ElectrostaticMap(me2)%quadrupole_moments(1) |
605 |
qyy_j = ElectrostaticMap(me2)%quadrupole_moments(2) |
606 |
qzz_j = ElectrostaticMap(me2)%quadrupole_moments(3) |
607 |
#ifdef IS_MPI |
608 |
ux_j(1) = eFrame_Col(1,atom2) |
609 |
ux_j(2) = eFrame_Col(4,atom2) |
610 |
ux_j(3) = eFrame_Col(7,atom2) |
611 |
uy_j(1) = eFrame_Col(2,atom2) |
612 |
uy_j(2) = eFrame_Col(5,atom2) |
613 |
uy_j(3) = eFrame_Col(8,atom2) |
614 |
uz_j(1) = eFrame_Col(3,atom2) |
615 |
uz_j(2) = eFrame_Col(6,atom2) |
616 |
uz_j(3) = eFrame_Col(9,atom2) |
617 |
#else |
618 |
ux_j(1) = eFrame(1,atom2) |
619 |
ux_j(2) = eFrame(4,atom2) |
620 |
ux_j(3) = eFrame(7,atom2) |
621 |
uy_j(1) = eFrame(2,atom2) |
622 |
uy_j(2) = eFrame(5,atom2) |
623 |
uy_j(3) = eFrame(8,atom2) |
624 |
uz_j(1) = eFrame(3,atom2) |
625 |
uz_j(2) = eFrame(6,atom2) |
626 |
uz_j(3) = eFrame(9,atom2) |
627 |
#endif |
628 |
cx_j = ux_j(1)*xhat + ux_j(2)*yhat + ux_j(3)*zhat |
629 |
cy_j = uy_j(1)*xhat + uy_j(2)*yhat + uy_j(3)*zhat |
630 |
cz_j = uz_j(1)*xhat + uz_j(2)*yhat + uz_j(3)*zhat |
631 |
endif |
632 |
|
633 |
epot = 0.0_dp |
634 |
dudx = 0.0_dp |
635 |
dudy = 0.0_dp |
636 |
dudz = 0.0_dp |
637 |
|
638 |
dudux_i = 0.0_dp |
639 |
duduy_i = 0.0_dp |
640 |
duduz_i = 0.0_dp |
641 |
|
642 |
dudux_j = 0.0_dp |
643 |
duduy_j = 0.0_dp |
644 |
duduz_j = 0.0_dp |
645 |
|
646 |
if (i_is_Charge) then |
647 |
|
648 |
if (j_is_Charge) then |
649 |
|
650 |
if (summationMethod .eq. SHIFTED_POTENTIAL) then |
651 |
if (screeningMethod .eq. DAMPED) then |
652 |
f0 = derfc(dampingAlpha*rij) |
653 |
varEXP = exp(-alpha2*rij*rij) |
654 |
f1 = alphaPi*rij*varEXP + f0c |
655 |
endif |
656 |
|
657 |
vterm = pre11 * q_i * q_j * (riji*f0 - rcuti*f0c) |
658 |
vpair = vpair + vterm |
659 |
epot = epot + sw*vterm |
660 |
|
661 |
dudr = -sw*pre11*q_i*q_j * riji * riji * f1 |
662 |
|
663 |
dudx = dudx + dudr * xhat |
664 |
dudy = dudy + dudr * yhat |
665 |
dudz = dudz + dudr * zhat |
666 |
|
667 |
elseif (summationMethod .eq. SHIFTED_FORCE) then |
668 |
if (screeningMethod .eq. DAMPED) then |
669 |
f0 = derfc(dampingAlpha*rij) |
670 |
varEXP = exp(-alpha2*rij*rij) |
671 |
f1 = alphaPi*rij*varEXP + f0 |
672 |
endif |
673 |
|
674 |
vterm = pre11 * q_i * q_j * ( riji*f0 - rcuti*f0c + & |
675 |
f1c*rcuti2*(rij-defaultCutoff) ) |
676 |
|
677 |
vpair = vpair + vterm |
678 |
epot = epot + sw*vterm |
679 |
|
680 |
dudr = -sw*pre11*q_i*q_j * (riji*riji*f1 - rcuti2*f1c) |
681 |
|
682 |
dudx = dudx + dudr * xhat |
683 |
dudy = dudy + dudr * yhat |
684 |
dudz = dudz + dudr * zhat |
685 |
|
686 |
elseif (summationMethod .eq. REACTION_FIELD) then |
687 |
preVal = pre11 * q_i * q_j |
688 |
rfVal = preRF*rij*rij |
689 |
vterm = preVal * ( riji + rfVal ) |
690 |
|
691 |
vpair = vpair + vterm |
692 |
epot = epot + sw*vterm |
693 |
|
694 |
dudr = sw * preVal * ( 2.0d0*rfVal - riji )*riji |
695 |
|
696 |
dudx = dudx + dudr * xhat |
697 |
dudy = dudy + dudr * yhat |
698 |
dudz = dudz + dudr * zhat |
699 |
|
700 |
else |
701 |
vterm = pre11 * q_i * q_j * riji |
702 |
vpair = vpair + vterm |
703 |
epot = epot + sw*vterm |
704 |
|
705 |
dudr = - sw * vterm * riji |
706 |
|
707 |
dudx = dudx + dudr * xhat |
708 |
dudy = dudy + dudr * yhat |
709 |
dudz = dudz + dudr * zhat |
710 |
|
711 |
endif |
712 |
|
713 |
endif |
714 |
|
715 |
if (j_is_Dipole) then |
716 |
|
717 |
pref = pre12 * q_i * mu_j |
718 |
|
719 |
!!$ if (summationMethod .eq. UNDAMPED_WOLF) then |
720 |
!!$ ri2 = riji * riji |
721 |
!!$ ri3 = ri2 * riji |
722 |
!!$ |
723 |
!!$ pref = pre12 * q_i * mu_j |
724 |
!!$ vterm = - pref * ct_j * (ri2 - rcuti2) |
725 |
!!$ vpair = vpair + vterm |
726 |
!!$ epot = epot + sw*vterm |
727 |
!!$ |
728 |
!!$ !! this has a + sign in the () because the rij vector is |
729 |
!!$ !! r_j - r_i and the charge-dipole potential takes the origin |
730 |
!!$ !! as the point dipole, which is atom j in this case. |
731 |
!!$ |
732 |
!!$ dudx = dudx - sw*pref * ( ri3*( uz_j(1) - 3.0d0*ct_j*xhat) & |
733 |
!!$ - rcuti3*( uz_j(1) - 3.0d0*ct_j*d(1)*rcuti ) ) |
734 |
!!$ dudy = dudy - sw*pref * ( ri3*( uz_j(2) - 3.0d0*ct_j*yhat) & |
735 |
!!$ - rcuti3*( uz_j(2) - 3.0d0*ct_j*d(2)*rcuti ) ) |
736 |
!!$ dudz = dudz - sw*pref * ( ri3*( uz_j(3) - 3.0d0*ct_j*zhat) & |
737 |
!!$ - rcuti3*( uz_j(3) - 3.0d0*ct_j*d(3)*rcuti ) ) |
738 |
!!$ |
739 |
!!$ duduz_j(1) = duduz_j(1) - sw*pref*( ri2*xhat - d(1)*rcuti3 ) |
740 |
!!$ duduz_j(2) = duduz_j(2) - sw*pref*( ri2*yhat - d(2)*rcuti3 ) |
741 |
!!$ duduz_j(3) = duduz_j(3) - sw*pref*( ri2*zhat - d(3)*rcuti3 ) |
742 |
!!$ |
743 |
!!$ elseif (summationMethod .eq. REACTION_FIELD) then |
744 |
|
745 |
if (summationMethod .eq. REACTION_FIELD) then |
746 |
ri2 = riji * riji |
747 |
ri3 = ri2 * riji |
748 |
|
749 |
pref = pre12 * q_i * mu_j |
750 |
vterm = - pref * ct_j * ( ri2 - preRF2*rij ) |
751 |
vpair = vpair + vterm |
752 |
epot = epot + sw*vterm |
753 |
|
754 |
!! this has a + sign in the () because the rij vector is |
755 |
!! r_j - r_i and the charge-dipole potential takes the origin |
756 |
!! as the point dipole, which is atom j in this case. |
757 |
|
758 |
dudx = dudx - sw*pref*( ri3*(uz_j(1) - 3.0d0*ct_j*xhat) - & |
759 |
preRF2*uz_j(1) ) |
760 |
dudy = dudy - sw*pref*( ri3*(uz_j(2) - 3.0d0*ct_j*yhat) - & |
761 |
preRF2*uz_j(2) ) |
762 |
dudz = dudz - sw*pref*( ri3*(uz_j(3) - 3.0d0*ct_j*zhat) - & |
763 |
preRF2*uz_j(3) ) |
764 |
duduz_j(1) = duduz_j(1) - sw*pref * xhat * ( ri2 - preRF2*rij ) |
765 |
duduz_j(2) = duduz_j(2) - sw*pref * yhat * ( ri2 - preRF2*rij ) |
766 |
duduz_j(3) = duduz_j(3) - sw*pref * zhat * ( ri2 - preRF2*rij ) |
767 |
|
768 |
else |
769 |
if (j_is_SplitDipole) then |
770 |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
771 |
ri = 1.0_dp / BigR |
772 |
scale = rij * ri |
773 |
else |
774 |
ri = riji |
775 |
scale = 1.0_dp |
776 |
endif |
777 |
|
778 |
ri2 = ri * ri |
779 |
ri3 = ri2 * ri |
780 |
sc2 = scale * scale |
781 |
|
782 |
pref = pre12 * q_i * mu_j |
783 |
vterm = - pref * ct_j * ri2 * scale |
784 |
vpair = vpair + vterm |
785 |
epot = epot + sw*vterm |
786 |
|
787 |
!! this has a + sign in the () because the rij vector is |
788 |
!! r_j - r_i and the charge-dipole potential takes the origin |
789 |
!! as the point dipole, which is atom j in this case. |
790 |
|
791 |
dudx = dudx - sw*pref * ri3 * ( uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
792 |
dudy = dudy - sw*pref * ri3 * ( uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
793 |
dudz = dudz - sw*pref * ri3 * ( uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
794 |
|
795 |
duduz_j(1) = duduz_j(1) - sw*pref * ri2 * xhat * scale |
796 |
duduz_j(2) = duduz_j(2) - sw*pref * ri2 * yhat * scale |
797 |
duduz_j(3) = duduz_j(3) - sw*pref * ri2 * zhat * scale |
798 |
|
799 |
endif |
800 |
endif |
801 |
|
802 |
if (j_is_Quadrupole) then |
803 |
ri2 = riji * riji |
804 |
ri3 = ri2 * riji |
805 |
ri4 = ri2 * ri2 |
806 |
cx2 = cx_j * cx_j |
807 |
cy2 = cy_j * cy_j |
808 |
cz2 = cz_j * cz_j |
809 |
|
810 |
!!$ if (summationMethod .eq. UNDAMPED_WOLF) then |
811 |
!!$ pref = pre14 * q_i / 3.0_dp |
812 |
!!$ vterm1 = pref * ri3*( qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
813 |
!!$ qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
814 |
!!$ qzz_j * (3.0_dp*cz2 - 1.0_dp) ) |
815 |
!!$ vterm2 = pref * rcuti3*( qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
816 |
!!$ qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
817 |
!!$ qzz_j * (3.0_dp*cz2 - 1.0_dp) ) |
818 |
!!$ vpair = vpair + ( vterm1 - vterm2 ) |
819 |
!!$ epot = epot + sw*( vterm1 - vterm2 ) |
820 |
!!$ |
821 |
!!$ dudx = dudx - (5.0_dp * & |
822 |
!!$ (vterm1*riji*xhat - vterm2*rcuti2*d(1))) + sw*pref * ( & |
823 |
!!$ (ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(1)) - & |
824 |
!!$ qxx_j*2.0_dp*(xhat - rcuti*d(1))) + & |
825 |
!!$ (ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(1)) - & |
826 |
!!$ qyy_j*2.0_dp*(xhat - rcuti*d(1))) + & |
827 |
!!$ (ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(1)) - & |
828 |
!!$ qzz_j*2.0_dp*(xhat - rcuti*d(1))) ) |
829 |
!!$ dudy = dudy - (5.0_dp * & |
830 |
!!$ (vterm1*riji*yhat - vterm2*rcuti2*d(2))) + sw*pref * ( & |
831 |
!!$ (ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(2)) - & |
832 |
!!$ qxx_j*2.0_dp*(yhat - rcuti*d(2))) + & |
833 |
!!$ (ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(2)) - & |
834 |
!!$ qyy_j*2.0_dp*(yhat - rcuti*d(2))) + & |
835 |
!!$ (ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(2)) - & |
836 |
!!$ qzz_j*2.0_dp*(yhat - rcuti*d(2))) ) |
837 |
!!$ dudz = dudz - (5.0_dp * & |
838 |
!!$ (vterm1*riji*zhat - vterm2*rcuti2*d(3))) + sw*pref * ( & |
839 |
!!$ (ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(3)) - & |
840 |
!!$ qxx_j*2.0_dp*(zhat - rcuti*d(3))) + & |
841 |
!!$ (ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(3)) - & |
842 |
!!$ qyy_j*2.0_dp*(zhat - rcuti*d(3))) + & |
843 |
!!$ (ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(3)) - & |
844 |
!!$ qzz_j*2.0_dp*(zhat - rcuti*d(3))) ) |
845 |
!!$ |
846 |
!!$ dudux_j(1) = dudux_j(1) + sw*pref*(ri3*(qxx_j*6.0_dp*cx_j*xhat) -& |
847 |
!!$ rcuti4*(qxx_j*6.0_dp*cx_j*d(1))) |
848 |
!!$ dudux_j(2) = dudux_j(2) + sw*pref*(ri3*(qxx_j*6.0_dp*cx_j*yhat) -& |
849 |
!!$ rcuti4*(qxx_j*6.0_dp*cx_j*d(2))) |
850 |
!!$ dudux_j(3) = dudux_j(3) + sw*pref*(ri3*(qxx_j*6.0_dp*cx_j*zhat) -& |
851 |
!!$ rcuti4*(qxx_j*6.0_dp*cx_j*d(3))) |
852 |
!!$ |
853 |
!!$ duduy_j(1) = duduy_j(1) + sw*pref*(ri3*(qyy_j*6.0_dp*cy_j*xhat) -& |
854 |
!!$ rcuti4*(qyy_j*6.0_dp*cx_j*d(1))) |
855 |
!!$ duduy_j(2) = duduy_j(2) + sw*pref*(ri3*(qyy_j*6.0_dp*cy_j*yhat) -& |
856 |
!!$ rcuti4*(qyy_j*6.0_dp*cx_j*d(2))) |
857 |
!!$ duduy_j(3) = duduy_j(3) + sw*pref*(ri3*(qyy_j*6.0_dp*cy_j*zhat) -& |
858 |
!!$ rcuti4*(qyy_j*6.0_dp*cx_j*d(3))) |
859 |
!!$ |
860 |
!!$ duduz_j(1) = duduz_j(1) + sw*pref*(ri3*(qzz_j*6.0_dp*cz_j*xhat) -& |
861 |
!!$ rcuti4*(qzz_j*6.0_dp*cx_j*d(1))) |
862 |
!!$ duduz_j(2) = duduz_j(2) + sw*pref*(ri3*(qzz_j*6.0_dp*cz_j*yhat) -& |
863 |
!!$ rcuti4*(qzz_j*6.0_dp*cx_j*d(2))) |
864 |
!!$ duduz_j(3) = duduz_j(3) + sw*pref*(ri3*(qzz_j*6.0_dp*cz_j*zhat) -& |
865 |
!!$ rcuti4*(qzz_j*6.0_dp*cx_j*d(3))) |
866 |
!!$ |
867 |
!!$ else |
868 |
pref = pre14 * q_i / 3.0_dp |
869 |
vterm = pref * ri3 * (qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
870 |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
871 |
qzz_j * (3.0_dp*cz2 - 1.0_dp)) |
872 |
vpair = vpair + vterm |
873 |
epot = epot + sw*vterm |
874 |
|
875 |
dudx = dudx - 5.0_dp*sw*vterm*riji*xhat + sw*pref * ri4 * ( & |
876 |
qxx_j*(6.0_dp*cx_j*ux_j(1) - 2.0_dp*xhat) + & |
877 |
qyy_j*(6.0_dp*cy_j*uy_j(1) - 2.0_dp*xhat) + & |
878 |
qzz_j*(6.0_dp*cz_j*uz_j(1) - 2.0_dp*xhat) ) |
879 |
dudy = dudy - 5.0_dp*sw*vterm*riji*yhat + sw*pref * ri4 * ( & |
880 |
qxx_j*(6.0_dp*cx_j*ux_j(2) - 2.0_dp*yhat) + & |
881 |
qyy_j*(6.0_dp*cy_j*uy_j(2) - 2.0_dp*yhat) + & |
882 |
qzz_j*(6.0_dp*cz_j*uz_j(2) - 2.0_dp*yhat) ) |
883 |
dudz = dudz - 5.0_dp*sw*vterm*riji*zhat + sw*pref * ri4 * ( & |
884 |
qxx_j*(6.0_dp*cx_j*ux_j(3) - 2.0_dp*zhat) + & |
885 |
qyy_j*(6.0_dp*cy_j*uy_j(3) - 2.0_dp*zhat) + & |
886 |
qzz_j*(6.0_dp*cz_j*uz_j(3) - 2.0_dp*zhat) ) |
887 |
|
888 |
dudux_j(1) = dudux_j(1) + sw*pref * ri3*(qxx_j*6.0_dp*cx_j*xhat) |
889 |
dudux_j(2) = dudux_j(2) + sw*pref * ri3*(qxx_j*6.0_dp*cx_j*yhat) |
890 |
dudux_j(3) = dudux_j(3) + sw*pref * ri3*(qxx_j*6.0_dp*cx_j*zhat) |
891 |
|
892 |
duduy_j(1) = duduy_j(1) + sw*pref * ri3*(qyy_j*6.0_dp*cy_j*xhat) |
893 |
duduy_j(2) = duduy_j(2) + sw*pref * ri3*(qyy_j*6.0_dp*cy_j*yhat) |
894 |
duduy_j(3) = duduy_j(3) + sw*pref * ri3*(qyy_j*6.0_dp*cy_j*zhat) |
895 |
|
896 |
duduz_j(1) = duduz_j(1) + sw*pref * ri3*(qzz_j*6.0_dp*cz_j*xhat) |
897 |
duduz_j(2) = duduz_j(2) + sw*pref * ri3*(qzz_j*6.0_dp*cz_j*yhat) |
898 |
duduz_j(3) = duduz_j(3) + sw*pref * ri3*(qzz_j*6.0_dp*cz_j*zhat) |
899 |
|
900 |
!!$ endif |
901 |
endif |
902 |
endif |
903 |
|
904 |
if (i_is_Dipole) then |
905 |
|
906 |
if (j_is_Charge) then |
907 |
|
908 |
if (summationMethod .eq. SHIFTED_POTENTIAL) then |
909 |
ri2 = riji * riji |
910 |
ri3 = ri2 * riji |
911 |
|
912 |
pref = pre12 * q_j * mu_i |
913 |
pot_term = ri2 - rcuti2 |
914 |
vterm = pref * ct_i * pot_term |
915 |
vpair = vpair + vterm |
916 |
epot = epot + sw*vterm |
917 |
|
918 |
dudx = dudx + sw*pref * ( ri3*(uz_i(1)-3.0d0*ct_i*xhat) ) |
919 |
dudy = dudy + sw*pref * ( ri3*(uz_i(2)-3.0d0*ct_i*yhat) ) |
920 |
dudz = dudz + sw*pref * ( ri3*(uz_i(3)-3.0d0*ct_i*zhat) ) |
921 |
|
922 |
duduz_i(1) = duduz_i(1) + sw*pref * xhat * pot_term |
923 |
duduz_i(2) = duduz_i(2) + sw*pref * yhat * pot_term |
924 |
duduz_i(3) = duduz_i(3) + sw*pref * zhat * pot_term |
925 |
|
926 |
elseif (summationMethod .eq. SHIFTED_FORCE) then |
927 |
ri2 = riji * riji |
928 |
ri3 = ri2 * riji |
929 |
|
930 |
pref = pre12 * q_j * mu_i |
931 |
pot_term = ri2 - rcuti2 + 2.0d0*rcuti3*( rij - defaultCutoff ) |
932 |
vterm = pref * ct_i * pot_term |
933 |
vpair = vpair + vterm |
934 |
epot = epot + sw*vterm |
935 |
|
936 |
dudx = dudx + sw*pref * ( (ri3-rcuti3)*(uz_i(1)-3.0d0*ct_i*xhat) ) |
937 |
dudy = dudy + sw*pref * ( (ri3-rcuti3)*(uz_i(2)-3.0d0*ct_i*yhat) ) |
938 |
dudz = dudz + sw*pref * ( (ri3-rcuti3)*(uz_i(3)-3.0d0*ct_i*zhat) ) |
939 |
|
940 |
duduz_i(1) = duduz_i(1) + sw*pref * xhat * pot_term |
941 |
duduz_i(2) = duduz_i(2) + sw*pref * yhat * pot_term |
942 |
duduz_i(3) = duduz_i(3) + sw*pref * zhat * pot_term |
943 |
|
944 |
elseif (summationMethod .eq. REACTION_FIELD) then |
945 |
ri2 = riji * riji |
946 |
ri3 = ri2 * riji |
947 |
|
948 |
pref = pre12 * q_j * mu_i |
949 |
vterm = pref * ct_i * ( ri2 - preRF2*rij ) |
950 |
vpair = vpair + vterm |
951 |
epot = epot + sw*vterm |
952 |
|
953 |
dudx = dudx + sw*pref * ( ri3*(uz_i(1) - 3.0d0*ct_i*xhat) - & |
954 |
preRF2*uz_i(1) ) |
955 |
dudy = dudy + sw*pref * ( ri3*(uz_i(2) - 3.0d0*ct_i*yhat) - & |
956 |
preRF2*uz_i(2) ) |
957 |
dudz = dudz + sw*pref * ( ri3*(uz_i(3) - 3.0d0*ct_i*zhat) - & |
958 |
preRF2*uz_i(3) ) |
959 |
|
960 |
duduz_i(1) = duduz_i(1) + sw*pref * xhat * ( ri2 - preRF2*rij ) |
961 |
duduz_i(2) = duduz_i(2) + sw*pref * yhat * ( ri2 - preRF2*rij ) |
962 |
duduz_i(3) = duduz_i(3) + sw*pref * zhat * ( ri2 - preRF2*rij ) |
963 |
|
964 |
else |
965 |
if (i_is_SplitDipole) then |
966 |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
967 |
ri = 1.0_dp / BigR |
968 |
scale = rij * ri |
969 |
else |
970 |
ri = riji |
971 |
scale = 1.0_dp |
972 |
endif |
973 |
|
974 |
ri2 = ri * ri |
975 |
ri3 = ri2 * ri |
976 |
sc2 = scale * scale |
977 |
|
978 |
pref = pre12 * q_j * mu_i |
979 |
vterm = pref * ct_i * ri2 * scale |
980 |
vpair = vpair + vterm |
981 |
epot = epot + sw*vterm |
982 |
|
983 |
dudx = dudx + sw*pref * ri3 * ( uz_i(1) - 3.0d0 * ct_i * xhat*sc2) |
984 |
dudy = dudy + sw*pref * ri3 * ( uz_i(2) - 3.0d0 * ct_i * yhat*sc2) |
985 |
dudz = dudz + sw*pref * ri3 * ( uz_i(3) - 3.0d0 * ct_i * zhat*sc2) |
986 |
|
987 |
duduz_i(1) = duduz_i(1) + sw*pref * ri2 * xhat * scale |
988 |
duduz_i(2) = duduz_i(2) + sw*pref * ri2 * yhat * scale |
989 |
duduz_i(3) = duduz_i(3) + sw*pref * ri2 * zhat * scale |
990 |
endif |
991 |
endif |
992 |
|
993 |
if (j_is_Dipole) then |
994 |
ct_ij = uz_i(1)*uz_j(1) + uz_i(2)*uz_j(2) + uz_i(3)*uz_j(3) |
995 |
|
996 |
ri2 = riji * riji |
997 |
ri3 = ri2 * riji |
998 |
ri4 = ri2 * ri2 |
999 |
|
1000 |
pref = pre22 * mu_i * mu_j |
1001 |
|
1002 |
!!$ if (summationMethod .eq. SHIFTED_POTENTIAL) then |
1003 |
!!$ a0 = ct_ij - 3.0d0 * ct_i * ct_j |
1004 |
!!$ pot_term = ri3 - rcuti3 |
1005 |
!!$ |
1006 |
!!$ vterm = pref*pot_term*a0 |
1007 |
!!$ vpair = vpair + vterm |
1008 |
!!$ epot = epot + sw*vterm |
1009 |
!!$ |
1010 |
!!$ a1 = 5.0d0 * ct_i * ct_j - ct_ij |
1011 |
!!$ |
1012 |
!!$ dudx = dudx + sw*pref*3.0d0*ri4 & |
1013 |
!!$ * (a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) |
1014 |
!!$ dudy = dudy + sw*pref*3.0d0*ri4 & |
1015 |
!!$ * (a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) |
1016 |
!!$ dudz = dudz + sw*pref*3.0d0*ri4 & |
1017 |
!!$ * (a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) |
1018 |
!!$ |
1019 |
!!$ duduz_i(1) = duduz_i(1) + sw*pref*( pot_term & |
1020 |
!!$ * (uz_j(1) - 3.0d0*ct_j*xhat) ) |
1021 |
!!$ duduz_i(2) = duduz_i(2) + sw*pref*( pot_term & |
1022 |
!!$ * (uz_j(2) - 3.0d0*ct_j*yhat) ) |
1023 |
!!$ duduz_i(3) = duduz_i(3) + sw*pref*( pot_term & |
1024 |
!!$ * (uz_j(3) - 3.0d0*ct_j*zhat) ) |
1025 |
!!$ duduz_j(1) = duduz_j(1) + sw*pref*( pot_term & |
1026 |
!!$ * (uz_i(1) - 3.0d0*ct_i*xhat) ) |
1027 |
!!$ duduz_j(2) = duduz_j(2) + sw*pref*( pot_term & |
1028 |
!!$ * (uz_i(2) - 3.0d0*ct_i*yhat) ) |
1029 |
!!$ duduz_j(3) = duduz_j(3) + sw*pref*( pot_term & |
1030 |
!!$ * (uz_i(3) - 3.0d0*ct_i*zhat) ) |
1031 |
!!$ |
1032 |
!!$ elseif (summationMethod .eq. SHIFTED_FORCE) then |
1033 |
!!$ a0 = ct_ij - 3.0d0 * ct_i * ct_j |
1034 |
!!$ pot_term = ri3 - rcuti3 + 3.0d0*rcuti4*( rij - defaultCutoff ) |
1035 |
!!$ |
1036 |
!!$ vterm = pref*pot_term*a0 |
1037 |
!!$ vpair = vpair + vterm |
1038 |
!!$ epot = epot + sw*vterm |
1039 |
!!$ |
1040 |
!!$ a1 = 5.0d0 * ct_i * ct_j - ct_ij |
1041 |
!!$ |
1042 |
!!$ dudx = dudx + sw*pref*3.0d0*( ri4 - rcuti4 ) & |
1043 |
!!$ * (a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) |
1044 |
!!$ dudy = dudy + sw*pref*3.0d0*( ri4 - rcuti4 ) & |
1045 |
!!$ * (a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) |
1046 |
!!$ dudz = dudz + sw*pref*3.0d0*( ri4 - rcuti4 ) & |
1047 |
!!$ * (a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) |
1048 |
!!$ |
1049 |
!!$ duduz_i(1) = duduz_i(1) + sw*pref*( pot_term & |
1050 |
!!$ * (uz_j(1) - 3.0d0*ct_j*xhat) ) |
1051 |
!!$ duduz_i(2) = duduz_i(2) + sw*pref*( pot_term & |
1052 |
!!$ * (uz_j(2) - 3.0d0*ct_j*yhat) ) |
1053 |
!!$ duduz_i(3) = duduz_i(3) + sw*pref*( pot_term & |
1054 |
!!$ * (uz_j(3) - 3.0d0*ct_j*zhat) ) |
1055 |
!!$ duduz_j(1) = duduz_j(1) + sw*pref*( pot_term & |
1056 |
!!$ * (uz_i(1) - 3.0d0*ct_i*xhat) ) |
1057 |
!!$ duduz_j(2) = duduz_j(2) + sw*pref*( pot_term & |
1058 |
!!$ * (uz_i(2) - 3.0d0*ct_i*yhat) ) |
1059 |
!!$ duduz_j(3) = duduz_j(3) + sw*pref*( pot_term & |
1060 |
!!$ * (uz_i(3) - 3.0d0*ct_i*zhat) ) |
1061 |
!!$ |
1062 |
!!$ elseif (summationMethod .eq. REACTION_FIELD) then |
1063 |
if (summationMethod .eq. REACTION_FIELD) then |
1064 |
vterm = pref*( ri3*(ct_ij - 3.0d0 * ct_i * ct_j) - & |
1065 |
preRF2*ct_ij ) |
1066 |
vpair = vpair + vterm |
1067 |
epot = epot + sw*vterm |
1068 |
|
1069 |
a1 = 5.0d0 * ct_i * ct_j - ct_ij |
1070 |
|
1071 |
dudx = dudx + sw*pref*3.0d0*ri4 & |
1072 |
* (a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) |
1073 |
dudy = dudy + sw*pref*3.0d0*ri4 & |
1074 |
* (a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) |
1075 |
dudz = dudz + sw*pref*3.0d0*ri4 & |
1076 |
* (a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) |
1077 |
|
1078 |
duduz_i(1) = duduz_i(1) + sw*pref*(ri3*(uz_j(1)-3.0d0*ct_j*xhat) & |
1079 |
- preRF2*uz_j(1)) |
1080 |
duduz_i(2) = duduz_i(2) + sw*pref*(ri3*(uz_j(2)-3.0d0*ct_j*yhat) & |
1081 |
- preRF2*uz_j(2)) |
1082 |
duduz_i(3) = duduz_i(3) + sw*pref*(ri3*(uz_j(3)-3.0d0*ct_j*zhat) & |
1083 |
- preRF2*uz_j(3)) |
1084 |
duduz_j(1) = duduz_j(1) + sw*pref*(ri3*(uz_i(1)-3.0d0*ct_i*xhat) & |
1085 |
- preRF2*uz_i(1)) |
1086 |
duduz_j(2) = duduz_j(2) + sw*pref*(ri3*(uz_i(2)-3.0d0*ct_i*yhat) & |
1087 |
- preRF2*uz_i(2)) |
1088 |
duduz_j(3) = duduz_j(3) + sw*pref*(ri3*(uz_i(3)-3.0d0*ct_i*zhat) & |
1089 |
- preRF2*uz_i(3)) |
1090 |
|
1091 |
else |
1092 |
if (i_is_SplitDipole) then |
1093 |
if (j_is_SplitDipole) then |
1094 |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i + 0.25_dp * d_j * d_j) |
1095 |
else |
1096 |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
1097 |
endif |
1098 |
ri = 1.0_dp / BigR |
1099 |
scale = rij * ri |
1100 |
else |
1101 |
if (j_is_SplitDipole) then |
1102 |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
1103 |
ri = 1.0_dp / BigR |
1104 |
scale = rij * ri |
1105 |
else |
1106 |
ri = riji |
1107 |
scale = 1.0_dp |
1108 |
endif |
1109 |
endif |
1110 |
|
1111 |
sc2 = scale * scale |
1112 |
|
1113 |
vterm = pref * ri3 * (ct_ij - 3.0d0 * ct_i * ct_j * sc2) |
1114 |
vpair = vpair + vterm |
1115 |
epot = epot + sw*vterm |
1116 |
|
1117 |
a1 = 5.0d0 * ct_i * ct_j * sc2 - ct_ij |
1118 |
|
1119 |
dudx = dudx + sw*pref*3.0d0*ri4*scale & |
1120 |
*(a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) |
1121 |
dudy = dudy + sw*pref*3.0d0*ri4*scale & |
1122 |
*(a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) |
1123 |
dudz = dudz + sw*pref*3.0d0*ri4*scale & |
1124 |
*(a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) |
1125 |
|
1126 |
duduz_i(1) = duduz_i(1) + sw*pref*ri3 & |
1127 |
*(uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
1128 |
duduz_i(2) = duduz_i(2) + sw*pref*ri3 & |
1129 |
*(uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
1130 |
duduz_i(3) = duduz_i(3) + sw*pref*ri3 & |
1131 |
*(uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
1132 |
|
1133 |
duduz_j(1) = duduz_j(1) + sw*pref*ri3 & |
1134 |
*(uz_i(1) - 3.0d0*ct_i*xhat*sc2) |
1135 |
duduz_j(2) = duduz_j(2) + sw*pref*ri3 & |
1136 |
*(uz_i(2) - 3.0d0*ct_i*yhat*sc2) |
1137 |
duduz_j(3) = duduz_j(3) + sw*pref*ri3 & |
1138 |
*(uz_i(3) - 3.0d0*ct_i*zhat*sc2) |
1139 |
endif |
1140 |
endif |
1141 |
endif |
1142 |
|
1143 |
if (i_is_Quadrupole) then |
1144 |
if (j_is_Charge) then |
1145 |
|
1146 |
ri2 = riji * riji |
1147 |
ri3 = ri2 * riji |
1148 |
ri4 = ri2 * ri2 |
1149 |
cx2 = cx_i * cx_i |
1150 |
cy2 = cy_i * cy_i |
1151 |
cz2 = cz_i * cz_i |
1152 |
|
1153 |
!!$ if (summationMethod .eq. UNDAMPED_WOLF) then |
1154 |
!!$ pref = pre14 * q_j / 3.0_dp |
1155 |
!!$ vterm1 = pref * ri3*( qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
1156 |
!!$ qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
1157 |
!!$ qzz_i * (3.0_dp*cz2 - 1.0_dp) ) |
1158 |
!!$ vterm2 = pref * rcuti3*( qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
1159 |
!!$ qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
1160 |
!!$ qzz_i * (3.0_dp*cz2 - 1.0_dp) ) |
1161 |
!!$ vpair = vpair + ( vterm1 - vterm2 ) |
1162 |
!!$ epot = epot + sw*( vterm1 - vterm2 ) |
1163 |
!!$ |
1164 |
!!$ dudx = dudx - sw*(5.0_dp*(vterm1*riji*xhat-vterm2*rcuti2*d(1))) +& |
1165 |
!!$ sw*pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(1)) - & |
1166 |
!!$ qxx_i*2.0_dp*(xhat - rcuti*d(1))) + & |
1167 |
!!$ (ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(1)) - & |
1168 |
!!$ qyy_i*2.0_dp*(xhat - rcuti*d(1))) + & |
1169 |
!!$ (ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(1)) - & |
1170 |
!!$ qzz_i*2.0_dp*(xhat - rcuti*d(1))) ) |
1171 |
!!$ dudy = dudy - sw*(5.0_dp*(vterm1*riji*yhat-vterm2*rcuti2*d(2))) +& |
1172 |
!!$ sw*pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(2)) - & |
1173 |
!!$ qxx_i*2.0_dp*(yhat - rcuti*d(2))) + & |
1174 |
!!$ (ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(2)) - & |
1175 |
!!$ qyy_i*2.0_dp*(yhat - rcuti*d(2))) + & |
1176 |
!!$ (ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(2)) - & |
1177 |
!!$ qzz_i*2.0_dp*(yhat - rcuti*d(2))) ) |
1178 |
!!$ dudz = dudz - sw*(5.0_dp*(vterm1*riji*zhat-vterm2*rcuti2*d(3))) +& |
1179 |
!!$ sw*pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(3)) - & |
1180 |
!!$ qxx_i*2.0_dp*(zhat - rcuti*d(3))) + & |
1181 |
!!$ (ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(3)) - & |
1182 |
!!$ qyy_i*2.0_dp*(zhat - rcuti*d(3))) + & |
1183 |
!!$ (ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(3)) - & |
1184 |
!!$ qzz_i*2.0_dp*(zhat - rcuti*d(3))) ) |
1185 |
!!$ |
1186 |
!!$ dudux_i(1) = dudux_i(1) + sw*pref*(ri3*(qxx_i*6.0_dp*cx_i*xhat) -& |
1187 |
!!$ rcuti4*(qxx_i*6.0_dp*cx_i*d(1))) |
1188 |
!!$ dudux_i(2) = dudux_i(2) + sw*pref*(ri3*(qxx_i*6.0_dp*cx_i*yhat) -& |
1189 |
!!$ rcuti4*(qxx_i*6.0_dp*cx_i*d(2))) |
1190 |
!!$ dudux_i(3) = dudux_i(3) + sw*pref*(ri3*(qxx_i*6.0_dp*cx_i*zhat) -& |
1191 |
!!$ rcuti4*(qxx_i*6.0_dp*cx_i*d(3))) |
1192 |
!!$ |
1193 |
!!$ duduy_i(1) = duduy_i(1) + sw*pref*(ri3*(qyy_i*6.0_dp*cy_i*xhat) -& |
1194 |
!!$ rcuti4*(qyy_i*6.0_dp*cx_i*d(1))) |
1195 |
!!$ duduy_i(2) = duduy_i(2) + sw*pref*(ri3*(qyy_i*6.0_dp*cy_i*yhat) -& |
1196 |
!!$ rcuti4*(qyy_i*6.0_dp*cx_i*d(2))) |
1197 |
!!$ duduy_i(3) = duduy_i(3) + sw*pref*(ri3*(qyy_i*6.0_dp*cy_i*zhat) -& |
1198 |
!!$ rcuti4*(qyy_i*6.0_dp*cx_i*d(3))) |
1199 |
!!$ |
1200 |
!!$ duduz_i(1) = duduz_i(1) + sw*pref*(ri3*(qzz_i*6.0_dp*cz_i*xhat) -& |
1201 |
!!$ rcuti4*(qzz_i*6.0_dp*cx_i*d(1))) |
1202 |
!!$ duduz_i(2) = duduz_i(2) + sw*pref*(ri3*(qzz_i*6.0_dp*cz_i*yhat) -& |
1203 |
!!$ rcuti4*(qzz_i*6.0_dp*cx_i*d(2))) |
1204 |
!!$ duduz_i(3) = duduz_i(3) + sw*pref*(ri3*(qzz_i*6.0_dp*cz_i*zhat) -& |
1205 |
!!$ rcuti4*(qzz_i*6.0_dp*cx_i*d(3))) |
1206 |
!!$ |
1207 |
!!$ else |
1208 |
pref = pre14 * q_j / 3.0_dp |
1209 |
vterm = pref * ri3 * (qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
1210 |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
1211 |
qzz_i * (3.0_dp*cz2 - 1.0_dp)) |
1212 |
vpair = vpair + vterm |
1213 |
epot = epot + sw*vterm |
1214 |
|
1215 |
dudx = dudx - 5.0_dp*sw*vterm*riji*xhat + sw*pref*ri4 * ( & |
1216 |
qxx_i*(6.0_dp*cx_i*ux_i(1) - 2.0_dp*xhat) + & |
1217 |
qyy_i*(6.0_dp*cy_i*uy_i(1) - 2.0_dp*xhat) + & |
1218 |
qzz_i*(6.0_dp*cz_i*uz_i(1) - 2.0_dp*xhat) ) |
1219 |
dudy = dudy - 5.0_dp*sw*vterm*riji*yhat + sw*pref*ri4 * ( & |
1220 |
qxx_i*(6.0_dp*cx_i*ux_i(2) - 2.0_dp*yhat) + & |
1221 |
qyy_i*(6.0_dp*cy_i*uy_i(2) - 2.0_dp*yhat) + & |
1222 |
qzz_i*(6.0_dp*cz_i*uz_i(2) - 2.0_dp*yhat) ) |
1223 |
dudz = dudz - 5.0_dp*sw*vterm*riji*zhat + sw*pref*ri4 * ( & |
1224 |
qxx_i*(6.0_dp*cx_i*ux_i(3) - 2.0_dp*zhat) + & |
1225 |
qyy_i*(6.0_dp*cy_i*uy_i(3) - 2.0_dp*zhat) + & |
1226 |
qzz_i*(6.0_dp*cz_i*uz_i(3) - 2.0_dp*zhat) ) |
1227 |
|
1228 |
dudux_i(1) = dudux_i(1) + sw*pref*ri3*(qxx_i*6.0_dp*cx_i*xhat) |
1229 |
dudux_i(2) = dudux_i(2) + sw*pref*ri3*(qxx_i*6.0_dp*cx_i*yhat) |
1230 |
dudux_i(3) = dudux_i(3) + sw*pref*ri3*(qxx_i*6.0_dp*cx_i*zhat) |
1231 |
|
1232 |
duduy_i(1) = duduy_i(1) + sw*pref*ri3*(qyy_i*6.0_dp*cy_i*xhat) |
1233 |
duduy_i(2) = duduy_i(2) + sw*pref*ri3*(qyy_i*6.0_dp*cy_i*yhat) |
1234 |
duduy_i(3) = duduy_i(3) + sw*pref*ri3*(qyy_i*6.0_dp*cy_i*zhat) |
1235 |
|
1236 |
duduz_i(1) = duduz_i(1) + sw*pref*ri3*(qzz_i*6.0_dp*cz_i*xhat) |
1237 |
duduz_i(2) = duduz_i(2) + sw*pref*ri3*(qzz_i*6.0_dp*cz_i*yhat) |
1238 |
duduz_i(3) = duduz_i(3) + sw*pref*ri3*(qzz_i*6.0_dp*cz_i*zhat) |
1239 |
!!$ endif |
1240 |
endif |
1241 |
endif |
1242 |
|
1243 |
|
1244 |
if (do_pot) then |
1245 |
#ifdef IS_MPI |
1246 |
pot_row(ELECTROSTATIC_POT,atom1) = pot_row(ELECTROSTATIC_POT,atom1) + 0.5d0*epot |
1247 |
pot_col(ELECTROSTATIC_POT,atom2) = pot_col(ELECTROSTATIC_POT,atom2) + 0.5d0*epot |
1248 |
#else |
1249 |
pot = pot + epot |
1250 |
#endif |
1251 |
endif |
1252 |
|
1253 |
#ifdef IS_MPI |
1254 |
f_Row(1,atom1) = f_Row(1,atom1) + dudx |
1255 |
f_Row(2,atom1) = f_Row(2,atom1) + dudy |
1256 |
f_Row(3,atom1) = f_Row(3,atom1) + dudz |
1257 |
|
1258 |
f_Col(1,atom2) = f_Col(1,atom2) - dudx |
1259 |
f_Col(2,atom2) = f_Col(2,atom2) - dudy |
1260 |
f_Col(3,atom2) = f_Col(3,atom2) - dudz |
1261 |
|
1262 |
if (i_is_Dipole .or. i_is_Quadrupole) then |
1263 |
t_Row(1,atom1)=t_Row(1,atom1) - uz_i(2)*duduz_i(3) + uz_i(3)*duduz_i(2) |
1264 |
t_Row(2,atom1)=t_Row(2,atom1) - uz_i(3)*duduz_i(1) + uz_i(1)*duduz_i(3) |
1265 |
t_Row(3,atom1)=t_Row(3,atom1) - uz_i(1)*duduz_i(2) + uz_i(2)*duduz_i(1) |
1266 |
endif |
1267 |
if (i_is_Quadrupole) then |
1268 |
t_Row(1,atom1)=t_Row(1,atom1) - ux_i(2)*dudux_i(3) + ux_i(3)*dudux_i(2) |
1269 |
t_Row(2,atom1)=t_Row(2,atom1) - ux_i(3)*dudux_i(1) + ux_i(1)*dudux_i(3) |
1270 |
t_Row(3,atom1)=t_Row(3,atom1) - ux_i(1)*dudux_i(2) + ux_i(2)*dudux_i(1) |
1271 |
|
1272 |
t_Row(1,atom1)=t_Row(1,atom1) - uy_i(2)*duduy_i(3) + uy_i(3)*duduy_i(2) |
1273 |
t_Row(2,atom1)=t_Row(2,atom1) - uy_i(3)*duduy_i(1) + uy_i(1)*duduy_i(3) |
1274 |
t_Row(3,atom1)=t_Row(3,atom1) - uy_i(1)*duduy_i(2) + uy_i(2)*duduy_i(1) |
1275 |
endif |
1276 |
|
1277 |
if (j_is_Dipole .or. j_is_Quadrupole) then |
1278 |
t_Col(1,atom2)=t_Col(1,atom2) - uz_j(2)*duduz_j(3) + uz_j(3)*duduz_j(2) |
1279 |
t_Col(2,atom2)=t_Col(2,atom2) - uz_j(3)*duduz_j(1) + uz_j(1)*duduz_j(3) |
1280 |
t_Col(3,atom2)=t_Col(3,atom2) - uz_j(1)*duduz_j(2) + uz_j(2)*duduz_j(1) |
1281 |
endif |
1282 |
if (j_is_Quadrupole) then |
1283 |
t_Col(1,atom2)=t_Col(1,atom2) - ux_j(2)*dudux_j(3) + ux_j(3)*dudux_j(2) |
1284 |
t_Col(2,atom2)=t_Col(2,atom2) - ux_j(3)*dudux_j(1) + ux_j(1)*dudux_j(3) |
1285 |
t_Col(3,atom2)=t_Col(3,atom2) - ux_j(1)*dudux_j(2) + ux_j(2)*dudux_j(1) |
1286 |
|
1287 |
t_Col(1,atom2)=t_Col(1,atom2) - uy_j(2)*duduy_j(3) + uy_j(3)*duduy_j(2) |
1288 |
t_Col(2,atom2)=t_Col(2,atom2) - uy_j(3)*duduy_j(1) + uy_j(1)*duduy_j(3) |
1289 |
t_Col(3,atom2)=t_Col(3,atom2) - uy_j(1)*duduy_j(2) + uy_j(2)*duduy_j(1) |
1290 |
endif |
1291 |
|
1292 |
#else |
1293 |
f(1,atom1) = f(1,atom1) + dudx |
1294 |
f(2,atom1) = f(2,atom1) + dudy |
1295 |
f(3,atom1) = f(3,atom1) + dudz |
1296 |
|
1297 |
f(1,atom2) = f(1,atom2) - dudx |
1298 |
f(2,atom2) = f(2,atom2) - dudy |
1299 |
f(3,atom2) = f(3,atom2) - dudz |
1300 |
|
1301 |
if (i_is_Dipole .or. i_is_Quadrupole) then |
1302 |
t(1,atom1)=t(1,atom1) - uz_i(2)*duduz_i(3) + uz_i(3)*duduz_i(2) |
1303 |
t(2,atom1)=t(2,atom1) - uz_i(3)*duduz_i(1) + uz_i(1)*duduz_i(3) |
1304 |
t(3,atom1)=t(3,atom1) - uz_i(1)*duduz_i(2) + uz_i(2)*duduz_i(1) |
1305 |
endif |
1306 |
if (i_is_Quadrupole) then |
1307 |
t(1,atom1)=t(1,atom1) - ux_i(2)*dudux_i(3) + ux_i(3)*dudux_i(2) |
1308 |
t(2,atom1)=t(2,atom1) - ux_i(3)*dudux_i(1) + ux_i(1)*dudux_i(3) |
1309 |
t(3,atom1)=t(3,atom1) - ux_i(1)*dudux_i(2) + ux_i(2)*dudux_i(1) |
1310 |
|
1311 |
t(1,atom1)=t(1,atom1) - uy_i(2)*duduy_i(3) + uy_i(3)*duduy_i(2) |
1312 |
t(2,atom1)=t(2,atom1) - uy_i(3)*duduy_i(1) + uy_i(1)*duduy_i(3) |
1313 |
t(3,atom1)=t(3,atom1) - uy_i(1)*duduy_i(2) + uy_i(2)*duduy_i(1) |
1314 |
endif |
1315 |
|
1316 |
if (j_is_Dipole .or. j_is_Quadrupole) then |
1317 |
t(1,atom2)=t(1,atom2) - uz_j(2)*duduz_j(3) + uz_j(3)*duduz_j(2) |
1318 |
t(2,atom2)=t(2,atom2) - uz_j(3)*duduz_j(1) + uz_j(1)*duduz_j(3) |
1319 |
t(3,atom2)=t(3,atom2) - uz_j(1)*duduz_j(2) + uz_j(2)*duduz_j(1) |
1320 |
endif |
1321 |
if (j_is_Quadrupole) then |
1322 |
t(1,atom2)=t(1,atom2) - ux_j(2)*dudux_j(3) + ux_j(3)*dudux_j(2) |
1323 |
t(2,atom2)=t(2,atom2) - ux_j(3)*dudux_j(1) + ux_j(1)*dudux_j(3) |
1324 |
t(3,atom2)=t(3,atom2) - ux_j(1)*dudux_j(2) + ux_j(2)*dudux_j(1) |
1325 |
|
1326 |
t(1,atom2)=t(1,atom2) - uy_j(2)*duduy_j(3) + uy_j(3)*duduy_j(2) |
1327 |
t(2,atom2)=t(2,atom2) - uy_j(3)*duduy_j(1) + uy_j(1)*duduy_j(3) |
1328 |
t(3,atom2)=t(3,atom2) - uy_j(1)*duduy_j(2) + uy_j(2)*duduy_j(1) |
1329 |
endif |
1330 |
|
1331 |
#endif |
1332 |
|
1333 |
#ifdef IS_MPI |
1334 |
id1 = AtomRowToGlobal(atom1) |
1335 |
id2 = AtomColToGlobal(atom2) |
1336 |
#else |
1337 |
id1 = atom1 |
1338 |
id2 = atom2 |
1339 |
#endif |
1340 |
|
1341 |
if (molMembershipList(id1) .ne. molMembershipList(id2)) then |
1342 |
|
1343 |
fpair(1) = fpair(1) + dudx |
1344 |
fpair(2) = fpair(2) + dudy |
1345 |
fpair(3) = fpair(3) + dudz |
1346 |
|
1347 |
endif |
1348 |
|
1349 |
return |
1350 |
end subroutine doElectrostaticPair |
1351 |
|
1352 |
subroutine destroyElectrostaticTypes() |
1353 |
|
1354 |
if(allocated(ElectrostaticMap)) deallocate(ElectrostaticMap) |
1355 |
|
1356 |
end subroutine destroyElectrostaticTypes |
1357 |
|
1358 |
subroutine self_self(atom1, eFrame, mypot, t, do_pot) |
1359 |
logical, intent(in) :: do_pot |
1360 |
integer, intent(in) :: atom1 |
1361 |
integer :: atid1 |
1362 |
real(kind=dp), dimension(9,nLocal) :: eFrame |
1363 |
real(kind=dp), dimension(3,nLocal) :: t |
1364 |
real(kind=dp) :: mu1, c1 |
1365 |
real(kind=dp) :: preVal, epot, mypot |
1366 |
real(kind=dp) :: eix, eiy, eiz |
1367 |
|
1368 |
! this is a local only array, so we use the local atom type id's: |
1369 |
atid1 = atid(atom1) |
1370 |
|
1371 |
if (.not.summationMethodChecked) then |
1372 |
call checkSummationMethod() |
1373 |
endif |
1374 |
|
1375 |
if (summationMethod .eq. REACTION_FIELD) then |
1376 |
if (ElectrostaticMap(atid1)%is_Dipole) then |
1377 |
mu1 = getDipoleMoment(atid1) |
1378 |
|
1379 |
preVal = pre22 * preRF2 * mu1*mu1 |
1380 |
mypot = mypot - 0.5d0*preVal |
1381 |
|
1382 |
! The self-correction term adds into the reaction field vector |
1383 |
|
1384 |
eix = preVal * eFrame(3,atom1) |
1385 |
eiy = preVal * eFrame(6,atom1) |
1386 |
eiz = preVal * eFrame(9,atom1) |
1387 |
|
1388 |
! once again, this is self-self, so only the local arrays are needed |
1389 |
! even for MPI jobs: |
1390 |
|
1391 |
t(1,atom1)=t(1,atom1) - eFrame(6,atom1)*eiz + & |
1392 |
eFrame(9,atom1)*eiy |
1393 |
t(2,atom1)=t(2,atom1) - eFrame(9,atom1)*eix + & |
1394 |
eFrame(3,atom1)*eiz |
1395 |
t(3,atom1)=t(3,atom1) - eFrame(3,atom1)*eiy + & |
1396 |
eFrame(6,atom1)*eix |
1397 |
|
1398 |
endif |
1399 |
|
1400 |
elseif (summationMethod .eq. SHIFTED_FORCE) then |
1401 |
if (ElectrostaticMap(atid1)%is_Charge) then |
1402 |
c1 = getCharge(atid1) |
1403 |
|
1404 |
if (screeningMethod .eq. DAMPED) then |
1405 |
mypot = mypot - (f0c * rcuti * 0.5_dp + & |
1406 |
dampingAlpha*invRootPi) * c1 * c1 |
1407 |
|
1408 |
else |
1409 |
mypot = mypot - (rcuti * 0.5_dp * c1 * c1) |
1410 |
|
1411 |
endif |
1412 |
endif |
1413 |
endif |
1414 |
|
1415 |
return |
1416 |
end subroutine self_self |
1417 |
|
1418 |
subroutine rf_self_excludes(atom1, atom2, sw, eFrame, d, rij, vpair, myPot, & |
1419 |
f, t, do_pot) |
1420 |
logical, intent(in) :: do_pot |
1421 |
integer, intent(in) :: atom1 |
1422 |
integer, intent(in) :: atom2 |
1423 |
logical :: i_is_Charge, j_is_Charge |
1424 |
logical :: i_is_Dipole, j_is_Dipole |
1425 |
integer :: atid1 |
1426 |
integer :: atid2 |
1427 |
real(kind=dp), intent(in) :: rij |
1428 |
real(kind=dp), intent(in) :: sw |
1429 |
real(kind=dp), intent(in), dimension(3) :: d |
1430 |
real(kind=dp), intent(inout) :: vpair |
1431 |
real(kind=dp), dimension(9,nLocal) :: eFrame |
1432 |
real(kind=dp), dimension(3,nLocal) :: f |
1433 |
real(kind=dp), dimension(3,nLocal) :: t |
1434 |
real (kind = dp), dimension(3) :: duduz_i |
1435 |
real (kind = dp), dimension(3) :: duduz_j |
1436 |
real (kind = dp), dimension(3) :: uz_i |
1437 |
real (kind = dp), dimension(3) :: uz_j |
1438 |
real(kind=dp) :: q_i, q_j, mu_i, mu_j |
1439 |
real(kind=dp) :: xhat, yhat, zhat |
1440 |
real(kind=dp) :: ct_i, ct_j |
1441 |
real(kind=dp) :: ri2, ri3, riji, vterm |
1442 |
real(kind=dp) :: pref, preVal, rfVal, myPot |
1443 |
real(kind=dp) :: dudx, dudy, dudz, dudr |
1444 |
|
1445 |
if (.not.summationMethodChecked) then |
1446 |
call checkSummationMethod() |
1447 |
endif |
1448 |
|
1449 |
dudx = 0.0d0 |
1450 |
dudy = 0.0d0 |
1451 |
dudz = 0.0d0 |
1452 |
|
1453 |
riji = 1.0d0/rij |
1454 |
|
1455 |
xhat = d(1) * riji |
1456 |
yhat = d(2) * riji |
1457 |
zhat = d(3) * riji |
1458 |
|
1459 |
! this is a local only array, so we use the local atom type id's: |
1460 |
atid1 = atid(atom1) |
1461 |
atid2 = atid(atom2) |
1462 |
i_is_Charge = ElectrostaticMap(atid1)%is_Charge |
1463 |
j_is_Charge = ElectrostaticMap(atid2)%is_Charge |
1464 |
i_is_Dipole = ElectrostaticMap(atid1)%is_Dipole |
1465 |
j_is_Dipole = ElectrostaticMap(atid2)%is_Dipole |
1466 |
|
1467 |
if (i_is_Charge.and.j_is_Charge) then |
1468 |
q_i = ElectrostaticMap(atid1)%charge |
1469 |
q_j = ElectrostaticMap(atid2)%charge |
1470 |
|
1471 |
preVal = pre11 * q_i * q_j |
1472 |
rfVal = preRF*rij*rij |
1473 |
vterm = preVal * rfVal |
1474 |
|
1475 |
myPot = myPot + sw*vterm |
1476 |
|
1477 |
dudr = sw*preVal * 2.0d0*rfVal*riji |
1478 |
|
1479 |
dudx = dudx + dudr * xhat |
1480 |
dudy = dudy + dudr * yhat |
1481 |
dudz = dudz + dudr * zhat |
1482 |
|
1483 |
elseif (i_is_Charge.and.j_is_Dipole) then |
1484 |
q_i = ElectrostaticMap(atid1)%charge |
1485 |
mu_j = ElectrostaticMap(atid2)%dipole_moment |
1486 |
uz_j(1) = eFrame(3,atom2) |
1487 |
uz_j(2) = eFrame(6,atom2) |
1488 |
uz_j(3) = eFrame(9,atom2) |
1489 |
ct_j = uz_j(1)*xhat + uz_j(2)*yhat + uz_j(3)*zhat |
1490 |
|
1491 |
ri2 = riji * riji |
1492 |
ri3 = ri2 * riji |
1493 |
|
1494 |
pref = pre12 * q_i * mu_j |
1495 |
vterm = - pref * ct_j * ( ri2 - preRF2*rij ) |
1496 |
myPot = myPot + sw*vterm |
1497 |
|
1498 |
dudx = dudx - sw*pref*( ri3*(uz_j(1)-3.0d0*ct_j*xhat) & |
1499 |
- preRF2*uz_j(1) ) |
1500 |
dudy = dudy - sw*pref*( ri3*(uz_j(2)-3.0d0*ct_j*yhat) & |
1501 |
- preRF2*uz_j(2) ) |
1502 |
dudz = dudz - sw*pref*( ri3*(uz_j(3)-3.0d0*ct_j*zhat) & |
1503 |
- preRF2*uz_j(3) ) |
1504 |
|
1505 |
duduz_j(1) = duduz_j(1) - sw * pref * xhat * ( ri2 - preRF2*rij ) |
1506 |
duduz_j(2) = duduz_j(2) - sw * pref * yhat * ( ri2 - preRF2*rij ) |
1507 |
duduz_j(3) = duduz_j(3) - sw * pref * zhat * ( ri2 - preRF2*rij ) |
1508 |
|
1509 |
elseif (i_is_Dipole.and.j_is_Charge) then |
1510 |
mu_i = ElectrostaticMap(atid1)%dipole_moment |
1511 |
q_j = ElectrostaticMap(atid2)%charge |
1512 |
uz_i(1) = eFrame(3,atom1) |
1513 |
uz_i(2) = eFrame(6,atom1) |
1514 |
uz_i(3) = eFrame(9,atom1) |
1515 |
ct_i = uz_i(1)*xhat + uz_i(2)*yhat + uz_i(3)*zhat |
1516 |
|
1517 |
ri2 = riji * riji |
1518 |
ri3 = ri2 * riji |
1519 |
|
1520 |
pref = pre12 * q_j * mu_i |
1521 |
vterm = pref * ct_i * ( ri2 - preRF2*rij ) |
1522 |
myPot = myPot + sw*vterm |
1523 |
|
1524 |
dudx = dudx + sw*pref*( ri3*(uz_i(1)-3.0d0*ct_i*xhat) & |
1525 |
- preRF2*uz_i(1) ) |
1526 |
dudy = dudy + sw*pref*( ri3*(uz_i(2)-3.0d0*ct_i*yhat) & |
1527 |
- preRF2*uz_i(2) ) |
1528 |
dudz = dudz + sw*pref*( ri3*(uz_i(3)-3.0d0*ct_i*zhat) & |
1529 |
- preRF2*uz_i(3) ) |
1530 |
|
1531 |
duduz_i(1) = duduz_i(1) + sw * pref * xhat * ( ri2 - preRF2*rij ) |
1532 |
duduz_i(2) = duduz_i(2) + sw * pref * yhat * ( ri2 - preRF2*rij ) |
1533 |
duduz_i(3) = duduz_i(3) + sw * pref * zhat * ( ri2 - preRF2*rij ) |
1534 |
|
1535 |
endif |
1536 |
|
1537 |
|
1538 |
! accumulate the forces and torques resulting from the self term |
1539 |
f(1,atom1) = f(1,atom1) + dudx |
1540 |
f(2,atom1) = f(2,atom1) + dudy |
1541 |
f(3,atom1) = f(3,atom1) + dudz |
1542 |
|
1543 |
f(1,atom2) = f(1,atom2) - dudx |
1544 |
f(2,atom2) = f(2,atom2) - dudy |
1545 |
f(3,atom2) = f(3,atom2) - dudz |
1546 |
|
1547 |
if (i_is_Dipole) then |
1548 |
t(1,atom1)=t(1,atom1) - uz_i(2)*duduz_i(3) + uz_i(3)*duduz_i(2) |
1549 |
t(2,atom1)=t(2,atom1) - uz_i(3)*duduz_i(1) + uz_i(1)*duduz_i(3) |
1550 |
t(3,atom1)=t(3,atom1) - uz_i(1)*duduz_i(2) + uz_i(2)*duduz_i(1) |
1551 |
elseif (j_is_Dipole) then |
1552 |
t(1,atom2)=t(1,atom2) - uz_j(2)*duduz_j(3) + uz_j(3)*duduz_j(2) |
1553 |
t(2,atom2)=t(2,atom2) - uz_j(3)*duduz_j(1) + uz_j(1)*duduz_j(3) |
1554 |
t(3,atom2)=t(3,atom2) - uz_j(1)*duduz_j(2) + uz_j(2)*duduz_j(1) |
1555 |
endif |
1556 |
|
1557 |
return |
1558 |
end subroutine rf_self_excludes |
1559 |
|
1560 |
end module electrostatic_module |