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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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|
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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 electrostatics: |
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integer, save :: summationMethod = NONE |
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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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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 :: constERFC = 0.0_DP |
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real(kind=DP), save :: constEXP = 0.0_DP |
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logical, save :: haveDWAconstants = .false. |
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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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logical, save :: preRFCalculated = .false. |
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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 :: setElectrostaticCutoffRadius |
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public :: setDampedWolfAlpha |
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public :: setReactionFieldDielectric |
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public :: setReactionFieldPrefactor |
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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 :: pre22 |
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public :: destroyElectrostaticTypes |
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public :: accumulate_rf |
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public :: accumulate_self_rf |
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public :: reaction_field_final |
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public :: rf_correct_forces |
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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 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 setDampedWolfAlpha(thisAlpha) |
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real(kind=dp), intent(in) :: thisAlpha |
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dampingAlpha = thisAlpha |
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haveDampingAlpha = .true. |
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end subroutine setDampedWolfAlpha |
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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 setReactionFieldPrefactor |
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if (haveDefaultCutoff .and. haveDielectric) then |
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defaultCutoff2 = defaultCutoff*defaultCutoff |
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preRF = pre22 * 2.0d0*(dielectric-1.0d0) / & |
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((2.0d0*dielectric+1.0d0)*defaultCutoff2*defaultCutoff) |
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preRFCalculated = .true. |
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else if (.not.haveDefaultCutoff) then |
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call handleError("setReactionFieldPrefactor", "Default cutoff not set") |
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else |
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call handleError("setReactionFieldPrefactor", "Dielectric not set") |
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endif |
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end subroutine setReactionFieldPrefactor |
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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 |
237 |
|
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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) |
246 |
|
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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 |
254 |
call handleError("electrostatic", "ElectrostaticMap was found to be too small during setCharge!") |
255 |
status = -1 |
256 |
return |
257 |
endif |
258 |
|
259 |
if (.not.ElectrostaticMap(myATID)%is_Charge) then |
260 |
call handleError("electrostatic", "Attempt to setCharge of an atom type that is not a charge!") |
261 |
status = -1 |
262 |
return |
263 |
endif |
264 |
|
265 |
ElectrostaticMap(myATID)%charge = charge |
266 |
end subroutine setCharge |
267 |
|
268 |
subroutine setDipoleMoment(c_ident, dipole_moment, status) |
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integer, intent(in) :: c_ident |
270 |
real(kind=dp), intent(in) :: dipole_moment |
271 |
integer, intent(out) :: status |
272 |
integer :: myATID |
273 |
|
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status = 0 |
275 |
myATID = getFirstMatchingElement(atypes, "c_ident", c_ident) |
276 |
|
277 |
if (.not.allocated(ElectrostaticMap)) then |
278 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of setDipoleMoment!") |
279 |
status = -1 |
280 |
return |
281 |
end if |
282 |
|
283 |
if (myATID .gt. size(ElectrostaticMap)) then |
284 |
call handleError("electrostatic", "ElectrostaticMap was found to be too small during setDipoleMoment!") |
285 |
status = -1 |
286 |
return |
287 |
endif |
288 |
|
289 |
if (.not.ElectrostaticMap(myATID)%is_Dipole) then |
290 |
call handleError("electrostatic", "Attempt to setDipoleMoment of an atom type that is not a dipole!") |
291 |
status = -1 |
292 |
return |
293 |
endif |
294 |
|
295 |
ElectrostaticMap(myATID)%dipole_moment = dipole_moment |
296 |
end subroutine setDipoleMoment |
297 |
|
298 |
subroutine setSplitDipoleDistance(c_ident, split_dipole_distance, status) |
299 |
integer, intent(in) :: c_ident |
300 |
real(kind=dp), intent(in) :: split_dipole_distance |
301 |
integer, intent(out) :: status |
302 |
integer :: myATID |
303 |
|
304 |
status = 0 |
305 |
myATID = getFirstMatchingElement(atypes, "c_ident", c_ident) |
306 |
|
307 |
if (.not.allocated(ElectrostaticMap)) then |
308 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of setSplitDipoleDistance!") |
309 |
status = -1 |
310 |
return |
311 |
end if |
312 |
|
313 |
if (myATID .gt. size(ElectrostaticMap)) then |
314 |
call handleError("electrostatic", "ElectrostaticMap was found to be too small during setSplitDipoleDistance!") |
315 |
status = -1 |
316 |
return |
317 |
endif |
318 |
|
319 |
if (.not.ElectrostaticMap(myATID)%is_SplitDipole) then |
320 |
call handleError("electrostatic", "Attempt to setSplitDipoleDistance of an atom type that is not a splitDipole!") |
321 |
status = -1 |
322 |
return |
323 |
endif |
324 |
|
325 |
ElectrostaticMap(myATID)%split_dipole_distance = split_dipole_distance |
326 |
end subroutine setSplitDipoleDistance |
327 |
|
328 |
subroutine setQuadrupoleMoments(c_ident, quadrupole_moments, status) |
329 |
integer, intent(in) :: c_ident |
330 |
real(kind=dp), intent(in), dimension(3) :: quadrupole_moments |
331 |
integer, intent(out) :: status |
332 |
integer :: myATID, i, j |
333 |
|
334 |
status = 0 |
335 |
myATID = getFirstMatchingElement(atypes, "c_ident", c_ident) |
336 |
|
337 |
if (.not.allocated(ElectrostaticMap)) then |
338 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of setQuadrupoleMoments!") |
339 |
status = -1 |
340 |
return |
341 |
end if |
342 |
|
343 |
if (myATID .gt. size(ElectrostaticMap)) then |
344 |
call handleError("electrostatic", "ElectrostaticMap was found to be too small during setQuadrupoleMoments!") |
345 |
status = -1 |
346 |
return |
347 |
endif |
348 |
|
349 |
if (.not.ElectrostaticMap(myATID)%is_Quadrupole) then |
350 |
call handleError("electrostatic", "Attempt to setQuadrupoleMoments of an atom type that is not a quadrupole!") |
351 |
status = -1 |
352 |
return |
353 |
endif |
354 |
|
355 |
do i = 1, 3 |
356 |
ElectrostaticMap(myATID)%quadrupole_moments(i) = & |
357 |
quadrupole_moments(i) |
358 |
enddo |
359 |
|
360 |
end subroutine setQuadrupoleMoments |
361 |
|
362 |
|
363 |
function getCharge(atid) result (c) |
364 |
integer, intent(in) :: atid |
365 |
integer :: localError |
366 |
real(kind=dp) :: c |
367 |
|
368 |
if (.not.allocated(ElectrostaticMap)) then |
369 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of getCharge!") |
370 |
return |
371 |
end if |
372 |
|
373 |
if (.not.ElectrostaticMap(atid)%is_Charge) then |
374 |
call handleError("electrostatic", "getCharge was called for an atom type that isn't a charge!") |
375 |
return |
376 |
endif |
377 |
|
378 |
c = ElectrostaticMap(atid)%charge |
379 |
end function getCharge |
380 |
|
381 |
function getDipoleMoment(atid) result (dm) |
382 |
integer, intent(in) :: atid |
383 |
integer :: localError |
384 |
real(kind=dp) :: dm |
385 |
|
386 |
if (.not.allocated(ElectrostaticMap)) then |
387 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of getDipoleMoment!") |
388 |
return |
389 |
end if |
390 |
|
391 |
if (.not.ElectrostaticMap(atid)%is_Dipole) then |
392 |
call handleError("electrostatic", "getDipoleMoment was called for an atom type that isn't a dipole!") |
393 |
return |
394 |
endif |
395 |
|
396 |
dm = ElectrostaticMap(atid)%dipole_moment |
397 |
end function getDipoleMoment |
398 |
|
399 |
subroutine checkSummationMethod() |
400 |
|
401 |
if (.not.haveDefaultCutoff) then |
402 |
call handleError("checkSummationMethod", "no Default Cutoff set!") |
403 |
endif |
404 |
|
405 |
rcuti = 1.0d0 / defaultCutoff |
406 |
rcuti2 = rcuti*rcuti |
407 |
rcuti3 = rcuti2*rcuti |
408 |
rcuti4 = rcuti2*rcuti2 |
409 |
|
410 |
if (summationMethod .eq. DAMPED_WOLF) then |
411 |
if (.not.haveDWAconstants) then |
412 |
|
413 |
if (.not.haveDampingAlpha) then |
414 |
call handleError("checkSummationMethod", "no Damping Alpha set!") |
415 |
endif |
416 |
|
417 |
if (.not.haveDefaultCutoff) then |
418 |
call handleError("checkSummationMethod", "no Default Cutoff set!") |
419 |
endif |
420 |
|
421 |
constEXP = exp(-dampingAlpha*dampingAlpha*defaultCutoff*defaultCutoff) |
422 |
constERFC = derfc(dampingAlpha*defaultCutoff) |
423 |
invRootPi = 0.56418958354775628695d0 |
424 |
alphaPi = 2*dampingAlpha*invRootPi |
425 |
|
426 |
haveDWAconstants = .true. |
427 |
endif |
428 |
endif |
429 |
|
430 |
if (summationMethod .eq. REACTION_FIELD) then |
431 |
if (.not.haveDielectric) then |
432 |
call handleError("checkSummationMethod", "no reaction field Dielectric set!") |
433 |
endif |
434 |
endif |
435 |
|
436 |
summationMethodChecked = .true. |
437 |
end subroutine checkSummationMethod |
438 |
|
439 |
|
440 |
|
441 |
subroutine doElectrostaticPair(atom1, atom2, d, rij, r2, sw, & |
442 |
vpair, fpair, pot, eFrame, f, t, do_pot) |
443 |
|
444 |
logical, intent(in) :: do_pot |
445 |
|
446 |
integer, intent(in) :: atom1, atom2 |
447 |
integer :: localError |
448 |
|
449 |
real(kind=dp), intent(in) :: rij, r2, sw |
450 |
real(kind=dp), intent(in), dimension(3) :: d |
451 |
real(kind=dp), intent(inout) :: vpair |
452 |
real(kind=dp), intent(inout), dimension(3) :: fpair |
453 |
|
454 |
real( kind = dp ) :: pot |
455 |
real( kind = dp ), dimension(9,nLocal) :: eFrame |
456 |
real( kind = dp ), dimension(3,nLocal) :: f |
457 |
real( kind = dp ), dimension(3,nLocal) :: t |
458 |
|
459 |
real (kind = dp), dimension(3) :: ux_i, uy_i, uz_i |
460 |
real (kind = dp), dimension(3) :: ux_j, uy_j, uz_j |
461 |
real (kind = dp), dimension(3) :: dudux_i, duduy_i, duduz_i |
462 |
real (kind = dp), dimension(3) :: dudux_j, duduy_j, duduz_j |
463 |
|
464 |
logical :: i_is_Charge, i_is_Dipole, i_is_SplitDipole, i_is_Quadrupole |
465 |
logical :: j_is_Charge, j_is_Dipole, j_is_SplitDipole, j_is_Quadrupole |
466 |
logical :: i_is_Tap, j_is_Tap |
467 |
integer :: me1, me2, id1, id2 |
468 |
real (kind=dp) :: q_i, q_j, mu_i, mu_j, d_i, d_j |
469 |
real (kind=dp) :: qxx_i, qyy_i, qzz_i |
470 |
real (kind=dp) :: qxx_j, qyy_j, qzz_j |
471 |
real (kind=dp) :: cx_i, cy_i, cz_i |
472 |
real (kind=dp) :: cx_j, cy_j, cz_j |
473 |
real (kind=dp) :: cx2, cy2, cz2 |
474 |
real (kind=dp) :: ct_i, ct_j, ct_ij, a1 |
475 |
real (kind=dp) :: riji, ri, ri2, ri3, ri4 |
476 |
real (kind=dp) :: pref, vterm, epot, dudr, vterm1, vterm2 |
477 |
real (kind=dp) :: xhat, yhat, zhat |
478 |
real (kind=dp) :: dudx, dudy, dudz |
479 |
real (kind=dp) :: scale, sc2, bigR |
480 |
real (kind=dp) :: varERFC, varEXP |
481 |
real (kind=dp) :: limScale |
482 |
|
483 |
if (.not.allocated(ElectrostaticMap)) then |
484 |
call handleError("electrostatic", "no ElectrostaticMap was present before first call of do_electrostatic_pair!") |
485 |
return |
486 |
end if |
487 |
|
488 |
if (.not.summationMethodChecked) then |
489 |
call checkSummationMethod() |
490 |
|
491 |
endif |
492 |
|
493 |
|
494 |
#ifdef IS_MPI |
495 |
me1 = atid_Row(atom1) |
496 |
me2 = atid_Col(atom2) |
497 |
#else |
498 |
me1 = atid(atom1) |
499 |
me2 = atid(atom2) |
500 |
#endif |
501 |
|
502 |
!! some variables we'll need independent of electrostatic type: |
503 |
|
504 |
riji = 1.0d0 / rij |
505 |
|
506 |
xhat = d(1) * riji |
507 |
yhat = d(2) * riji |
508 |
zhat = d(3) * riji |
509 |
|
510 |
!! logicals |
511 |
i_is_Charge = ElectrostaticMap(me1)%is_Charge |
512 |
i_is_Dipole = ElectrostaticMap(me1)%is_Dipole |
513 |
i_is_SplitDipole = ElectrostaticMap(me1)%is_SplitDipole |
514 |
i_is_Quadrupole = ElectrostaticMap(me1)%is_Quadrupole |
515 |
i_is_Tap = ElectrostaticMap(me1)%is_Tap |
516 |
|
517 |
j_is_Charge = ElectrostaticMap(me2)%is_Charge |
518 |
j_is_Dipole = ElectrostaticMap(me2)%is_Dipole |
519 |
j_is_SplitDipole = ElectrostaticMap(me2)%is_SplitDipole |
520 |
j_is_Quadrupole = ElectrostaticMap(me2)%is_Quadrupole |
521 |
j_is_Tap = ElectrostaticMap(me2)%is_Tap |
522 |
|
523 |
if (i_is_Charge) then |
524 |
q_i = ElectrostaticMap(me1)%charge |
525 |
endif |
526 |
|
527 |
if (i_is_Dipole) then |
528 |
mu_i = ElectrostaticMap(me1)%dipole_moment |
529 |
#ifdef IS_MPI |
530 |
uz_i(1) = eFrame_Row(3,atom1) |
531 |
uz_i(2) = eFrame_Row(6,atom1) |
532 |
uz_i(3) = eFrame_Row(9,atom1) |
533 |
#else |
534 |
uz_i(1) = eFrame(3,atom1) |
535 |
uz_i(2) = eFrame(6,atom1) |
536 |
uz_i(3) = eFrame(9,atom1) |
537 |
#endif |
538 |
ct_i = uz_i(1)*xhat + uz_i(2)*yhat + uz_i(3)*zhat |
539 |
|
540 |
if (i_is_SplitDipole) then |
541 |
d_i = ElectrostaticMap(me1)%split_dipole_distance |
542 |
endif |
543 |
|
544 |
endif |
545 |
|
546 |
if (i_is_Quadrupole) then |
547 |
qxx_i = ElectrostaticMap(me1)%quadrupole_moments(1) |
548 |
qyy_i = ElectrostaticMap(me1)%quadrupole_moments(2) |
549 |
qzz_i = ElectrostaticMap(me1)%quadrupole_moments(3) |
550 |
#ifdef IS_MPI |
551 |
ux_i(1) = eFrame_Row(1,atom1) |
552 |
ux_i(2) = eFrame_Row(4,atom1) |
553 |
ux_i(3) = eFrame_Row(7,atom1) |
554 |
uy_i(1) = eFrame_Row(2,atom1) |
555 |
uy_i(2) = eFrame_Row(5,atom1) |
556 |
uy_i(3) = eFrame_Row(8,atom1) |
557 |
uz_i(1) = eFrame_Row(3,atom1) |
558 |
uz_i(2) = eFrame_Row(6,atom1) |
559 |
uz_i(3) = eFrame_Row(9,atom1) |
560 |
#else |
561 |
ux_i(1) = eFrame(1,atom1) |
562 |
ux_i(2) = eFrame(4,atom1) |
563 |
ux_i(3) = eFrame(7,atom1) |
564 |
uy_i(1) = eFrame(2,atom1) |
565 |
uy_i(2) = eFrame(5,atom1) |
566 |
uy_i(3) = eFrame(8,atom1) |
567 |
uz_i(1) = eFrame(3,atom1) |
568 |
uz_i(2) = eFrame(6,atom1) |
569 |
uz_i(3) = eFrame(9,atom1) |
570 |
#endif |
571 |
cx_i = ux_i(1)*xhat + ux_i(2)*yhat + ux_i(3)*zhat |
572 |
cy_i = uy_i(1)*xhat + uy_i(2)*yhat + uy_i(3)*zhat |
573 |
cz_i = uz_i(1)*xhat + uz_i(2)*yhat + uz_i(3)*zhat |
574 |
endif |
575 |
|
576 |
if (j_is_Charge) then |
577 |
q_j = ElectrostaticMap(me2)%charge |
578 |
endif |
579 |
|
580 |
if (j_is_Dipole) then |
581 |
mu_j = ElectrostaticMap(me2)%dipole_moment |
582 |
#ifdef IS_MPI |
583 |
uz_j(1) = eFrame_Col(3,atom2) |
584 |
uz_j(2) = eFrame_Col(6,atom2) |
585 |
uz_j(3) = eFrame_Col(9,atom2) |
586 |
#else |
587 |
uz_j(1) = eFrame(3,atom2) |
588 |
uz_j(2) = eFrame(6,atom2) |
589 |
uz_j(3) = eFrame(9,atom2) |
590 |
#endif |
591 |
ct_j = uz_j(1)*xhat + uz_j(2)*yhat + uz_j(3)*zhat |
592 |
|
593 |
if (j_is_SplitDipole) then |
594 |
d_j = ElectrostaticMap(me2)%split_dipole_distance |
595 |
endif |
596 |
endif |
597 |
|
598 |
if (j_is_Quadrupole) then |
599 |
qxx_j = ElectrostaticMap(me2)%quadrupole_moments(1) |
600 |
qyy_j = ElectrostaticMap(me2)%quadrupole_moments(2) |
601 |
qzz_j = ElectrostaticMap(me2)%quadrupole_moments(3) |
602 |
#ifdef IS_MPI |
603 |
ux_j(1) = eFrame_Col(1,atom2) |
604 |
ux_j(2) = eFrame_Col(4,atom2) |
605 |
ux_j(3) = eFrame_Col(7,atom2) |
606 |
uy_j(1) = eFrame_Col(2,atom2) |
607 |
uy_j(2) = eFrame_Col(5,atom2) |
608 |
uy_j(3) = eFrame_Col(8,atom2) |
609 |
uz_j(1) = eFrame_Col(3,atom2) |
610 |
uz_j(2) = eFrame_Col(6,atom2) |
611 |
uz_j(3) = eFrame_Col(9,atom2) |
612 |
#else |
613 |
ux_j(1) = eFrame(1,atom2) |
614 |
ux_j(2) = eFrame(4,atom2) |
615 |
ux_j(3) = eFrame(7,atom2) |
616 |
uy_j(1) = eFrame(2,atom2) |
617 |
uy_j(2) = eFrame(5,atom2) |
618 |
uy_j(3) = eFrame(8,atom2) |
619 |
uz_j(1) = eFrame(3,atom2) |
620 |
uz_j(2) = eFrame(6,atom2) |
621 |
uz_j(3) = eFrame(9,atom2) |
622 |
#endif |
623 |
cx_j = ux_j(1)*xhat + ux_j(2)*yhat + ux_j(3)*zhat |
624 |
cy_j = uy_j(1)*xhat + uy_j(2)*yhat + uy_j(3)*zhat |
625 |
cz_j = uz_j(1)*xhat + uz_j(2)*yhat + uz_j(3)*zhat |
626 |
endif |
627 |
|
628 |
epot = 0.0_dp |
629 |
dudx = 0.0_dp |
630 |
dudy = 0.0_dp |
631 |
dudz = 0.0_dp |
632 |
|
633 |
dudux_i = 0.0_dp |
634 |
duduy_i = 0.0_dp |
635 |
duduz_i = 0.0_dp |
636 |
|
637 |
dudux_j = 0.0_dp |
638 |
duduy_j = 0.0_dp |
639 |
duduz_j = 0.0_dp |
640 |
|
641 |
if (i_is_Charge) then |
642 |
|
643 |
if (j_is_Charge) then |
644 |
|
645 |
if (summationMethod .eq. UNDAMPED_WOLF) then |
646 |
|
647 |
vterm = pre11 * q_i * q_j * (riji - rcuti) |
648 |
vpair = vpair + vterm |
649 |
epot = epot + sw*vterm |
650 |
|
651 |
dudr = -sw*pre11*q_i*q_j * (riji*riji-rcuti2)*riji |
652 |
|
653 |
dudx = dudx + dudr * d(1) |
654 |
dudy = dudy + dudr * d(2) |
655 |
dudz = dudz + dudr * d(3) |
656 |
|
657 |
elseif (summationMethod .eq. DAMPED_WOLF) then |
658 |
|
659 |
varERFC = derfc(dampingAlpha*rij) |
660 |
varEXP = exp(-dampingAlpha*dampingAlpha*rij*rij) |
661 |
vterm = pre11 * q_i * q_j * (varERFC*riji - constERFC*rcuti) |
662 |
vpair = vpair + vterm |
663 |
epot = epot + sw*vterm |
664 |
|
665 |
dudr = -sw*pre11*q_i*q_j * ( riji*((varERFC*riji*riji & |
666 |
+ alphaPi*varEXP) & |
667 |
- (constERFC*rcuti2 & |
668 |
+ alphaPi*constEXP)) ) |
669 |
|
670 |
dudx = dudx + dudr * d(1) |
671 |
dudy = dudy + dudr * d(2) |
672 |
dudz = dudz + dudr * d(3) |
673 |
|
674 |
else |
675 |
|
676 |
vterm = pre11 * q_i * q_j * riji |
677 |
vpair = vpair + vterm |
678 |
epot = epot + sw*vterm |
679 |
|
680 |
dudr = - sw * vterm * riji |
681 |
|
682 |
dudx = dudx + dudr * xhat |
683 |
dudy = dudy + dudr * yhat |
684 |
dudz = dudz + dudr * zhat |
685 |
|
686 |
endif |
687 |
|
688 |
endif |
689 |
|
690 |
if (j_is_Dipole) then |
691 |
|
692 |
pref = pre12 * q_i * mu_j |
693 |
|
694 |
if (summationMethod .eq. UNDAMPED_WOLF) then |
695 |
ri2 = riji * riji |
696 |
ri3 = ri2 * riji |
697 |
|
698 |
pref = pre12 * q_i * mu_j |
699 |
vterm = - pref * ct_j * (ri2 - rcuti2) |
700 |
vpair = vpair + vterm |
701 |
epot = epot + sw*vterm |
702 |
|
703 |
!! this has a + sign in the () because the rij vector is |
704 |
!! r_j - r_i and the charge-dipole potential takes the origin |
705 |
!! as the point dipole, which is atom j in this case. |
706 |
|
707 |
dudx = dudx - sw*pref * ( ri3*( uz_j(1) - 3.0d0*ct_j*xhat) & |
708 |
- rcuti3*( uz_j(1) - 3.0d0*ct_j*d(1)*rcuti ) ) |
709 |
dudy = dudy - sw*pref * ( ri3*( uz_j(2) - 3.0d0*ct_j*yhat) & |
710 |
- rcuti3*( uz_j(2) - 3.0d0*ct_j*d(2)*rcuti ) ) |
711 |
dudz = dudz - sw*pref * ( ri3*( uz_j(3) - 3.0d0*ct_j*zhat) & |
712 |
- rcuti3*( uz_j(3) - 3.0d0*ct_j*d(3)*rcuti ) ) |
713 |
|
714 |
duduz_j(1) = duduz_j(1) - sw*pref*( ri2*xhat - d(1)*rcuti3 ) |
715 |
duduz_j(2) = duduz_j(2) - sw*pref*( ri2*yhat - d(2)*rcuti3 ) |
716 |
duduz_j(3) = duduz_j(3) - sw*pref*( ri2*zhat - d(3)*rcuti3 ) |
717 |
|
718 |
else |
719 |
if (j_is_SplitDipole) then |
720 |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
721 |
ri = 1.0_dp / BigR |
722 |
scale = rij * ri |
723 |
else |
724 |
ri = riji |
725 |
scale = 1.0_dp |
726 |
endif |
727 |
|
728 |
ri2 = ri * ri |
729 |
ri3 = ri2 * ri |
730 |
sc2 = scale * scale |
731 |
|
732 |
pref = pre12 * q_i * mu_j |
733 |
vterm = - pref * ct_j * ri2 * scale |
734 |
vpair = vpair + vterm |
735 |
epot = epot + sw*vterm |
736 |
|
737 |
!! this has a + sign in the () because the rij vector is |
738 |
!! r_j - r_i and the charge-dipole potential takes the origin |
739 |
!! as the point dipole, which is atom j in this case. |
740 |
|
741 |
dudx = dudx - sw*pref * ri3 * ( uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
742 |
dudy = dudy - sw*pref * ri3 * ( uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
743 |
dudz = dudz - sw*pref * ri3 * ( uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
744 |
|
745 |
duduz_j(1) = duduz_j(1) - sw*pref * ri2 * xhat * scale |
746 |
duduz_j(2) = duduz_j(2) - sw*pref * ri2 * yhat * scale |
747 |
duduz_j(3) = duduz_j(3) - sw*pref * ri2 * zhat * scale |
748 |
|
749 |
endif |
750 |
endif |
751 |
|
752 |
if (j_is_Quadrupole) then |
753 |
ri2 = riji * riji |
754 |
ri3 = ri2 * riji |
755 |
ri4 = ri2 * ri2 |
756 |
cx2 = cx_j * cx_j |
757 |
cy2 = cy_j * cy_j |
758 |
cz2 = cz_j * cz_j |
759 |
|
760 |
if (summationMethod .eq. UNDAMPED_WOLF) then |
761 |
pref = pre14 * q_i / 3.0_dp |
762 |
vterm1 = pref * ri3*( qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
763 |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
764 |
qzz_j * (3.0_dp*cz2 - 1.0_dp) ) |
765 |
vterm2 = pref * rcuti3*( qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
766 |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
767 |
qzz_j * (3.0_dp*cz2 - 1.0_dp) ) |
768 |
vpair = vpair + ( vterm1 - vterm2 ) |
769 |
epot = epot + sw*( vterm1 - vterm2 ) |
770 |
|
771 |
dudx = dudx - (5.0_dp * & |
772 |
(vterm1*riji*xhat - vterm2*rcuti2*d(1))) + sw*pref * ( & |
773 |
(ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(1)) - & |
774 |
qxx_j*2.0_dp*(xhat - rcuti*d(1))) + & |
775 |
(ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(1)) - & |
776 |
qyy_j*2.0_dp*(xhat - rcuti*d(1))) + & |
777 |
(ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(1)) - & |
778 |
qzz_j*2.0_dp*(xhat - rcuti*d(1))) ) |
779 |
dudy = dudy - (5.0_dp * & |
780 |
(vterm1*riji*yhat - vterm2*rcuti2*d(2))) + sw*pref * ( & |
781 |
(ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(2)) - & |
782 |
qxx_j*2.0_dp*(yhat - rcuti*d(2))) + & |
783 |
(ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(2)) - & |
784 |
qyy_j*2.0_dp*(yhat - rcuti*d(2))) + & |
785 |
(ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(2)) - & |
786 |
qzz_j*2.0_dp*(yhat - rcuti*d(2))) ) |
787 |
dudz = dudz - (5.0_dp * & |
788 |
(vterm1*riji*zhat - vterm2*rcuti2*d(3))) + sw*pref * ( & |
789 |
(ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(3)) - & |
790 |
qxx_j*2.0_dp*(zhat - rcuti*d(3))) + & |
791 |
(ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(3)) - & |
792 |
qyy_j*2.0_dp*(zhat - rcuti*d(3))) + & |
793 |
(ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(3)) - & |
794 |
qzz_j*2.0_dp*(zhat - rcuti*d(3))) ) |
795 |
|
796 |
dudux_j(1) = dudux_j(1) + sw*pref*(ri3*(qxx_j*6.0_dp*cx_j*xhat) -& |
797 |
rcuti4*(qxx_j*6.0_dp*cx_j*d(1))) |
798 |
dudux_j(2) = dudux_j(2) + sw*pref*(ri3*(qxx_j*6.0_dp*cx_j*yhat) -& |
799 |
rcuti4*(qxx_j*6.0_dp*cx_j*d(2))) |
800 |
dudux_j(3) = dudux_j(3) + sw*pref*(ri3*(qxx_j*6.0_dp*cx_j*zhat) -& |
801 |
rcuti4*(qxx_j*6.0_dp*cx_j*d(3))) |
802 |
|
803 |
duduy_j(1) = duduy_j(1) + sw*pref*(ri3*(qyy_j*6.0_dp*cy_j*xhat) -& |
804 |
rcuti4*(qyy_j*6.0_dp*cx_j*d(1))) |
805 |
duduy_j(2) = duduy_j(2) + sw*pref*(ri3*(qyy_j*6.0_dp*cy_j*yhat) -& |
806 |
rcuti4*(qyy_j*6.0_dp*cx_j*d(2))) |
807 |
duduy_j(3) = duduy_j(3) + sw*pref*(ri3*(qyy_j*6.0_dp*cy_j*zhat) -& |
808 |
rcuti4*(qyy_j*6.0_dp*cx_j*d(3))) |
809 |
|
810 |
duduz_j(1) = duduz_j(1) + sw*pref*(ri3*(qzz_j*6.0_dp*cz_j*xhat) -& |
811 |
rcuti4*(qzz_j*6.0_dp*cx_j*d(1))) |
812 |
duduz_j(2) = duduz_j(2) + sw*pref*(ri3*(qzz_j*6.0_dp*cz_j*yhat) -& |
813 |
rcuti4*(qzz_j*6.0_dp*cx_j*d(2))) |
814 |
duduz_j(3) = duduz_j(3) + sw*pref*(ri3*(qzz_j*6.0_dp*cz_j*zhat) -& |
815 |
rcuti4*(qzz_j*6.0_dp*cx_j*d(3))) |
816 |
|
817 |
else |
818 |
pref = pre14 * q_i / 3.0_dp |
819 |
vterm = pref * ri3 * (qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
820 |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
821 |
qzz_j * (3.0_dp*cz2 - 1.0_dp)) |
822 |
vpair = vpair + vterm |
823 |
epot = epot + sw*vterm |
824 |
|
825 |
dudx = dudx - 5.0_dp*sw*vterm*riji*xhat + sw*pref * ri4 * ( & |
826 |
qxx_j*(6.0_dp*cx_j*ux_j(1) - 2.0_dp*xhat) + & |
827 |
qyy_j*(6.0_dp*cy_j*uy_j(1) - 2.0_dp*xhat) + & |
828 |
qzz_j*(6.0_dp*cz_j*uz_j(1) - 2.0_dp*xhat) ) |
829 |
dudy = dudy - 5.0_dp*sw*vterm*riji*yhat + sw*pref * ri4 * ( & |
830 |
qxx_j*(6.0_dp*cx_j*ux_j(2) - 2.0_dp*yhat) + & |
831 |
qyy_j*(6.0_dp*cy_j*uy_j(2) - 2.0_dp*yhat) + & |
832 |
qzz_j*(6.0_dp*cz_j*uz_j(2) - 2.0_dp*yhat) ) |
833 |
dudz = dudz - 5.0_dp*sw*vterm*riji*zhat + sw*pref * ri4 * ( & |
834 |
qxx_j*(6.0_dp*cx_j*ux_j(3) - 2.0_dp*zhat) + & |
835 |
qyy_j*(6.0_dp*cy_j*uy_j(3) - 2.0_dp*zhat) + & |
836 |
qzz_j*(6.0_dp*cz_j*uz_j(3) - 2.0_dp*zhat) ) |
837 |
|
838 |
dudux_j(1) = dudux_j(1) + sw*pref * ri3*(qxx_j*6.0_dp*cx_j*xhat) |
839 |
dudux_j(2) = dudux_j(2) + sw*pref * ri3*(qxx_j*6.0_dp*cx_j*yhat) |
840 |
dudux_j(3) = dudux_j(3) + sw*pref * ri3*(qxx_j*6.0_dp*cx_j*zhat) |
841 |
|
842 |
duduy_j(1) = duduy_j(1) + sw*pref * ri3*(qyy_j*6.0_dp*cy_j*xhat) |
843 |
duduy_j(2) = duduy_j(2) + sw*pref * ri3*(qyy_j*6.0_dp*cy_j*yhat) |
844 |
duduy_j(3) = duduy_j(3) + sw*pref * ri3*(qyy_j*6.0_dp*cy_j*zhat) |
845 |
|
846 |
duduz_j(1) = duduz_j(1) + sw*pref * ri3*(qzz_j*6.0_dp*cz_j*xhat) |
847 |
duduz_j(2) = duduz_j(2) + sw*pref * ri3*(qzz_j*6.0_dp*cz_j*yhat) |
848 |
duduz_j(3) = duduz_j(3) + sw*pref * ri3*(qzz_j*6.0_dp*cz_j*zhat) |
849 |
|
850 |
endif |
851 |
endif |
852 |
endif |
853 |
|
854 |
if (i_is_Dipole) then |
855 |
|
856 |
if (j_is_Charge) then |
857 |
|
858 |
pref = pre12 * q_j * mu_i |
859 |
|
860 |
if (summationMethod .eq. UNDAMPED_WOLF) then |
861 |
ri2 = riji * riji |
862 |
ri3 = ri2 * riji |
863 |
|
864 |
pref = pre12 * q_j * mu_i |
865 |
vterm = pref * ct_i * (ri2 - rcuti2) |
866 |
vpair = vpair + vterm |
867 |
epot = epot + sw*vterm |
868 |
|
869 |
!! this has a + sign in the () because the rij vector is |
870 |
!! r_j - r_i and the charge-dipole potential takes the origin |
871 |
!! as the point dipole, which is atom j in this case. |
872 |
|
873 |
dudx = dudx + sw*pref * ( ri3*( uz_i(1) - 3.0d0*ct_i*xhat) & |
874 |
- rcuti3*( uz_i(1) - 3.0d0*ct_i*d(1)*rcuti ) ) |
875 |
dudy = dudy + sw*pref * ( ri3*( uz_i(2) - 3.0d0*ct_i*yhat) & |
876 |
- rcuti3*( uz_i(2) - 3.0d0*ct_i*d(2)*rcuti ) ) |
877 |
dudz = dudz + sw*pref * ( ri3*( uz_i(3) - 3.0d0*ct_i*zhat) & |
878 |
- rcuti3*( uz_i(3) - 3.0d0*ct_i*d(3)*rcuti ) ) |
879 |
|
880 |
duduz_i(1) = duduz_i(1) - sw*pref*( ri2*xhat - d(1)*rcuti3 ) |
881 |
duduz_i(2) = duduz_i(2) - sw*pref*( ri2*yhat - d(2)*rcuti3 ) |
882 |
duduz_i(3) = duduz_i(3) - sw*pref*( ri2*zhat - d(3)*rcuti3 ) |
883 |
|
884 |
else |
885 |
if (i_is_SplitDipole) then |
886 |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
887 |
ri = 1.0_dp / BigR |
888 |
scale = rij * ri |
889 |
else |
890 |
ri = riji |
891 |
scale = 1.0_dp |
892 |
endif |
893 |
|
894 |
ri2 = ri * ri |
895 |
ri3 = ri2 * ri |
896 |
sc2 = scale * scale |
897 |
|
898 |
pref = pre12 * q_j * mu_i |
899 |
vterm = pref * ct_i * ri2 * scale |
900 |
vpair = vpair + vterm |
901 |
epot = epot + sw*vterm |
902 |
|
903 |
dudx = dudx + sw*pref * ri3 * ( uz_i(1) - 3.0d0 * ct_i * xhat*sc2) |
904 |
dudy = dudy + sw*pref * ri3 * ( uz_i(2) - 3.0d0 * ct_i * yhat*sc2) |
905 |
dudz = dudz + sw*pref * ri3 * ( uz_i(3) - 3.0d0 * ct_i * zhat*sc2) |
906 |
|
907 |
duduz_i(1) = duduz_i(1) + sw*pref * ri2 * xhat * scale |
908 |
duduz_i(2) = duduz_i(2) + sw*pref * ri2 * yhat * scale |
909 |
duduz_i(3) = duduz_i(3) + sw*pref * ri2 * zhat * scale |
910 |
endif |
911 |
endif |
912 |
|
913 |
if (j_is_Dipole) then |
914 |
|
915 |
if (summationMethod .eq. UNDAMPED_WOLF) then |
916 |
ri2 = riji * riji |
917 |
ri3 = ri2 * riji |
918 |
ri4 = ri2 * ri2 |
919 |
|
920 |
pref = pre22 * mu_i * mu_j |
921 |
vterm = pref * (ri3 - rcuti3) * (ct_ij - 3.0d0 * ct_i * ct_j) |
922 |
vpair = vpair + vterm |
923 |
epot = epot + sw*vterm |
924 |
|
925 |
a1 = 5.0d0 * ct_i * ct_j - ct_ij |
926 |
|
927 |
dudx = dudx + sw*pref*3.0d0*ri4 & |
928 |
* (a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) & |
929 |
- sw*pref*3.0d0*rcuti4 & |
930 |
* (a1*rcuti*d(1)-ct_i*uz_j(1)-ct_j*uz_i(1)) |
931 |
dudy = dudy + sw*pref*3.0d0*ri4 & |
932 |
* (a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) & |
933 |
- sw*pref*3.0d0*rcuti4 & |
934 |
* (a1*rcuti*d(2)-ct_i*uz_j(2)-ct_j*uz_i(2)) |
935 |
dudz = dudz + sw*pref*3.0d0*ri4 & |
936 |
* (a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) & |
937 |
- sw*pref*3.0d0*rcuti4 & |
938 |
* (a1*rcuti*d(3)-ct_i*uz_j(3)-ct_j*uz_i(3)) |
939 |
|
940 |
duduz_i(1) = duduz_i(1) + sw*pref*(ri3*(uz_j(1)-3.0d0*ct_j*xhat) & |
941 |
- rcuti3*(uz_j(1) - 3.0d0*ct_j*d(1)*rcuti)) |
942 |
duduz_i(2) = duduz_i(2) + sw*pref*(ri3*(uz_j(2)-3.0d0*ct_j*yhat) & |
943 |
- rcuti3*(uz_j(2) - 3.0d0*ct_j*d(2)*rcuti)) |
944 |
duduz_i(3) = duduz_i(3) + sw*pref*(ri3*(uz_j(3)-3.0d0*ct_j*zhat) & |
945 |
- rcuti3*(uz_j(3) - 3.0d0*ct_j*d(3)*rcuti)) |
946 |
duduz_j(1) = duduz_j(1) + sw*pref*(ri3*(uz_i(1)-3.0d0*ct_i*xhat) & |
947 |
- rcuti3*(uz_i(1) - 3.0d0*ct_i*d(1)*rcuti)) |
948 |
duduz_j(2) = duduz_j(2) + sw*pref*(ri3*(uz_i(2)-3.0d0*ct_i*yhat) & |
949 |
- rcuti3*(uz_i(2) - 3.0d0*ct_i*d(2)*rcuti)) |
950 |
duduz_j(3) = duduz_j(3) + sw*pref*(ri3*(uz_i(3)-3.0d0*ct_i*zhat) & |
951 |
- rcuti3*(uz_i(3) - 3.0d0*ct_i*d(3)*rcuti)) |
952 |
|
953 |
else |
954 |
if (i_is_SplitDipole) then |
955 |
if (j_is_SplitDipole) then |
956 |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i + 0.25_dp * d_j * d_j) |
957 |
else |
958 |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
959 |
endif |
960 |
ri = 1.0_dp / BigR |
961 |
scale = rij * ri |
962 |
else |
963 |
if (j_is_SplitDipole) then |
964 |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
965 |
ri = 1.0_dp / BigR |
966 |
scale = rij * ri |
967 |
else |
968 |
ri = riji |
969 |
scale = 1.0_dp |
970 |
endif |
971 |
endif |
972 |
|
973 |
ct_ij = uz_i(1)*uz_j(1) + uz_i(2)*uz_j(2) + uz_i(3)*uz_j(3) |
974 |
|
975 |
ri2 = ri * ri |
976 |
ri3 = ri2 * ri |
977 |
ri4 = ri2 * ri2 |
978 |
sc2 = scale * scale |
979 |
|
980 |
pref = pre22 * mu_i * mu_j |
981 |
vterm = pref * ri3 * (ct_ij - 3.0d0 * ct_i * ct_j * sc2) |
982 |
vpair = vpair + vterm |
983 |
epot = epot + sw*vterm |
984 |
|
985 |
a1 = 5.0d0 * ct_i * ct_j * sc2 - ct_ij |
986 |
|
987 |
dudx = dudx + sw*pref*3.0d0*ri4*scale & |
988 |
*(a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) |
989 |
dudy = dudy + sw*pref*3.0d0*ri4*scale & |
990 |
*(a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) |
991 |
dudz = dudz + sw*pref*3.0d0*ri4*scale & |
992 |
*(a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) |
993 |
|
994 |
duduz_i(1) = duduz_i(1) + sw*pref*ri3 & |
995 |
*(uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
996 |
duduz_i(2) = duduz_i(2) + sw*pref*ri3 & |
997 |
*(uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
998 |
duduz_i(3) = duduz_i(3) + sw*pref*ri3 & |
999 |
*(uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
1000 |
|
1001 |
duduz_j(1) = duduz_j(1) + sw*pref*ri3 & |
1002 |
*(uz_i(1) - 3.0d0*ct_i*xhat*sc2) |
1003 |
duduz_j(2) = duduz_j(2) + sw*pref*ri3 & |
1004 |
*(uz_i(2) - 3.0d0*ct_i*yhat*sc2) |
1005 |
duduz_j(3) = duduz_j(3) + sw*pref*ri3 & |
1006 |
*(uz_i(3) - 3.0d0*ct_i*zhat*sc2) |
1007 |
endif |
1008 |
endif |
1009 |
endif |
1010 |
|
1011 |
if (i_is_Quadrupole) then |
1012 |
if (j_is_Charge) then |
1013 |
|
1014 |
ri2 = riji * riji |
1015 |
ri3 = ri2 * riji |
1016 |
ri4 = ri2 * ri2 |
1017 |
cx2 = cx_i * cx_i |
1018 |
cy2 = cy_i * cy_i |
1019 |
cz2 = cz_i * cz_i |
1020 |
|
1021 |
if (summationMethod .eq. UNDAMPED_WOLF) then |
1022 |
pref = pre14 * q_j / 3.0_dp |
1023 |
vterm1 = pref * ri3*( qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
1024 |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
1025 |
qzz_i * (3.0_dp*cz2 - 1.0_dp) ) |
1026 |
vterm2 = pref * rcuti3*( qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
1027 |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
1028 |
qzz_i * (3.0_dp*cz2 - 1.0_dp) ) |
1029 |
vpair = vpair + ( vterm1 - vterm2 ) |
1030 |
epot = epot + sw*( vterm1 - vterm2 ) |
1031 |
|
1032 |
dudx = dudx - sw*(5.0_dp*(vterm1*riji*xhat-vterm2*rcuti2*d(1))) +& |
1033 |
sw*pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(1)) - & |
1034 |
qxx_i*2.0_dp*(xhat - rcuti*d(1))) + & |
1035 |
(ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(1)) - & |
1036 |
qyy_i*2.0_dp*(xhat - rcuti*d(1))) + & |
1037 |
(ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(1)) - & |
1038 |
qzz_i*2.0_dp*(xhat - rcuti*d(1))) ) |
1039 |
dudy = dudy - sw*(5.0_dp*(vterm1*riji*yhat-vterm2*rcuti2*d(2))) +& |
1040 |
sw*pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(2)) - & |
1041 |
qxx_i*2.0_dp*(yhat - rcuti*d(2))) + & |
1042 |
(ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(2)) - & |
1043 |
qyy_i*2.0_dp*(yhat - rcuti*d(2))) + & |
1044 |
(ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(2)) - & |
1045 |
qzz_i*2.0_dp*(yhat - rcuti*d(2))) ) |
1046 |
dudz = dudz - sw*(5.0_dp*(vterm1*riji*zhat-vterm2*rcuti2*d(3))) +& |
1047 |
sw*pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(3)) - & |
1048 |
qxx_i*2.0_dp*(zhat - rcuti*d(3))) + & |
1049 |
(ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(3)) - & |
1050 |
qyy_i*2.0_dp*(zhat - rcuti*d(3))) + & |
1051 |
(ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(3)) - & |
1052 |
qzz_i*2.0_dp*(zhat - rcuti*d(3))) ) |
1053 |
|
1054 |
dudux_i(1) = dudux_i(1) + sw*pref*(ri3*(qxx_i*6.0_dp*cx_i*xhat) -& |
1055 |
rcuti4*(qxx_i*6.0_dp*cx_i*d(1))) |
1056 |
dudux_i(2) = dudux_i(2) + sw*pref*(ri3*(qxx_i*6.0_dp*cx_i*yhat) -& |
1057 |
rcuti4*(qxx_i*6.0_dp*cx_i*d(2))) |
1058 |
dudux_i(3) = dudux_i(3) + sw*pref*(ri3*(qxx_i*6.0_dp*cx_i*zhat) -& |
1059 |
rcuti4*(qxx_i*6.0_dp*cx_i*d(3))) |
1060 |
|
1061 |
duduy_i(1) = duduy_i(1) + sw*pref*(ri3*(qyy_i*6.0_dp*cy_i*xhat) -& |
1062 |
rcuti4*(qyy_i*6.0_dp*cx_i*d(1))) |
1063 |
duduy_i(2) = duduy_i(2) + sw*pref*(ri3*(qyy_i*6.0_dp*cy_i*yhat) -& |
1064 |
rcuti4*(qyy_i*6.0_dp*cx_i*d(2))) |
1065 |
duduy_i(3) = duduy_i(3) + sw*pref*(ri3*(qyy_i*6.0_dp*cy_i*zhat) -& |
1066 |
rcuti4*(qyy_i*6.0_dp*cx_i*d(3))) |
1067 |
|
1068 |
duduz_i(1) = duduz_i(1) + sw*pref*(ri3*(qzz_i*6.0_dp*cz_i*xhat) -& |
1069 |
rcuti4*(qzz_i*6.0_dp*cx_i*d(1))) |
1070 |
duduz_i(2) = duduz_i(2) + sw*pref*(ri3*(qzz_i*6.0_dp*cz_i*yhat) -& |
1071 |
rcuti4*(qzz_i*6.0_dp*cx_i*d(2))) |
1072 |
duduz_i(3) = duduz_i(3) + sw*pref*(ri3*(qzz_i*6.0_dp*cz_i*zhat) -& |
1073 |
rcuti4*(qzz_i*6.0_dp*cx_i*d(3))) |
1074 |
|
1075 |
else |
1076 |
pref = pre14 * q_j / 3.0_dp |
1077 |
vterm = pref * ri3 * (qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
1078 |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
1079 |
qzz_i * (3.0_dp*cz2 - 1.0_dp)) |
1080 |
vpair = vpair + vterm |
1081 |
epot = epot + sw*vterm |
1082 |
|
1083 |
dudx = dudx - 5.0_dp*sw*vterm*riji*xhat + sw*pref*ri4 * ( & |
1084 |
qxx_i*(6.0_dp*cx_i*ux_i(1) - 2.0_dp*xhat) + & |
1085 |
qyy_i*(6.0_dp*cy_i*uy_i(1) - 2.0_dp*xhat) + & |
1086 |
qzz_i*(6.0_dp*cz_i*uz_i(1) - 2.0_dp*xhat) ) |
1087 |
dudy = dudy - 5.0_dp*sw*vterm*riji*yhat + sw*pref*ri4 * ( & |
1088 |
qxx_i*(6.0_dp*cx_i*ux_i(2) - 2.0_dp*yhat) + & |
1089 |
qyy_i*(6.0_dp*cy_i*uy_i(2) - 2.0_dp*yhat) + & |
1090 |
qzz_i*(6.0_dp*cz_i*uz_i(2) - 2.0_dp*yhat) ) |
1091 |
dudz = dudz - 5.0_dp*sw*vterm*riji*zhat + sw*pref*ri4 * ( & |
1092 |
qxx_i*(6.0_dp*cx_i*ux_i(3) - 2.0_dp*zhat) + & |
1093 |
qyy_i*(6.0_dp*cy_i*uy_i(3) - 2.0_dp*zhat) + & |
1094 |
qzz_i*(6.0_dp*cz_i*uz_i(3) - 2.0_dp*zhat) ) |
1095 |
|
1096 |
dudux_i(1) = dudux_i(1) + sw*pref*ri3*(qxx_i*6.0_dp*cx_i*xhat) |
1097 |
dudux_i(2) = dudux_i(2) + sw*pref*ri3*(qxx_i*6.0_dp*cx_i*yhat) |
1098 |
dudux_i(3) = dudux_i(3) + sw*pref*ri3*(qxx_i*6.0_dp*cx_i*zhat) |
1099 |
|
1100 |
duduy_i(1) = duduy_i(1) + sw*pref*ri3*(qyy_i*6.0_dp*cy_i*xhat) |
1101 |
duduy_i(2) = duduy_i(2) + sw*pref*ri3*(qyy_i*6.0_dp*cy_i*yhat) |
1102 |
duduy_i(3) = duduy_i(3) + sw*pref*ri3*(qyy_i*6.0_dp*cy_i*zhat) |
1103 |
|
1104 |
duduz_i(1) = duduz_i(1) + sw*pref*ri3*(qzz_i*6.0_dp*cz_i*xhat) |
1105 |
duduz_i(2) = duduz_i(2) + sw*pref*ri3*(qzz_i*6.0_dp*cz_i*yhat) |
1106 |
duduz_i(3) = duduz_i(3) + sw*pref*ri3*(qzz_i*6.0_dp*cz_i*zhat) |
1107 |
endif |
1108 |
endif |
1109 |
endif |
1110 |
|
1111 |
|
1112 |
if (do_pot) then |
1113 |
#ifdef IS_MPI |
1114 |
pot_row(ELECTROSTATIC_POT,atom1) = pot_row(ELECTROSTATIC_POT,atom1) + 0.5d0*epot |
1115 |
pot_col(ELECTROSTATIC_POT,atom2) = pot_col(ELECTROSTATIC_POT,atom2) + 0.5d0*epot |
1116 |
#else |
1117 |
pot = pot + epot |
1118 |
#endif |
1119 |
endif |
1120 |
|
1121 |
#ifdef IS_MPI |
1122 |
f_Row(1,atom1) = f_Row(1,atom1) + dudx |
1123 |
f_Row(2,atom1) = f_Row(2,atom1) + dudy |
1124 |
f_Row(3,atom1) = f_Row(3,atom1) + dudz |
1125 |
|
1126 |
f_Col(1,atom2) = f_Col(1,atom2) - dudx |
1127 |
f_Col(2,atom2) = f_Col(2,atom2) - dudy |
1128 |
f_Col(3,atom2) = f_Col(3,atom2) - dudz |
1129 |
|
1130 |
if (i_is_Dipole .or. i_is_Quadrupole) then |
1131 |
t_Row(1,atom1)=t_Row(1,atom1) - uz_i(2)*duduz_i(3) + uz_i(3)*duduz_i(2) |
1132 |
t_Row(2,atom1)=t_Row(2,atom1) - uz_i(3)*duduz_i(1) + uz_i(1)*duduz_i(3) |
1133 |
t_Row(3,atom1)=t_Row(3,atom1) - uz_i(1)*duduz_i(2) + uz_i(2)*duduz_i(1) |
1134 |
endif |
1135 |
if (i_is_Quadrupole) then |
1136 |
t_Row(1,atom1)=t_Row(1,atom1) - ux_i(2)*dudux_i(3) + ux_i(3)*dudux_i(2) |
1137 |
t_Row(2,atom1)=t_Row(2,atom1) - ux_i(3)*dudux_i(1) + ux_i(1)*dudux_i(3) |
1138 |
t_Row(3,atom1)=t_Row(3,atom1) - ux_i(1)*dudux_i(2) + ux_i(2)*dudux_i(1) |
1139 |
|
1140 |
t_Row(1,atom1)=t_Row(1,atom1) - uy_i(2)*duduy_i(3) + uy_i(3)*duduy_i(2) |
1141 |
t_Row(2,atom1)=t_Row(2,atom1) - uy_i(3)*duduy_i(1) + uy_i(1)*duduy_i(3) |
1142 |
t_Row(3,atom1)=t_Row(3,atom1) - uy_i(1)*duduy_i(2) + uy_i(2)*duduy_i(1) |
1143 |
endif |
1144 |
|
1145 |
if (j_is_Dipole .or. j_is_Quadrupole) then |
1146 |
t_Col(1,atom2)=t_Col(1,atom2) - uz_j(2)*duduz_j(3) + uz_j(3)*duduz_j(2) |
1147 |
t_Col(2,atom2)=t_Col(2,atom2) - uz_j(3)*duduz_j(1) + uz_j(1)*duduz_j(3) |
1148 |
t_Col(3,atom2)=t_Col(3,atom2) - uz_j(1)*duduz_j(2) + uz_j(2)*duduz_j(1) |
1149 |
endif |
1150 |
if (j_is_Quadrupole) then |
1151 |
t_Col(1,atom2)=t_Col(1,atom2) - ux_j(2)*dudux_j(3) + ux_j(3)*dudux_j(2) |
1152 |
t_Col(2,atom2)=t_Col(2,atom2) - ux_j(3)*dudux_j(1) + ux_j(1)*dudux_j(3) |
1153 |
t_Col(3,atom2)=t_Col(3,atom2) - ux_j(1)*dudux_j(2) + ux_j(2)*dudux_j(1) |
1154 |
|
1155 |
t_Col(1,atom2)=t_Col(1,atom2) - uy_j(2)*duduy_j(3) + uy_j(3)*duduy_j(2) |
1156 |
t_Col(2,atom2)=t_Col(2,atom2) - uy_j(3)*duduy_j(1) + uy_j(1)*duduy_j(3) |
1157 |
t_Col(3,atom2)=t_Col(3,atom2) - uy_j(1)*duduy_j(2) + uy_j(2)*duduy_j(1) |
1158 |
endif |
1159 |
|
1160 |
#else |
1161 |
f(1,atom1) = f(1,atom1) + dudx |
1162 |
f(2,atom1) = f(2,atom1) + dudy |
1163 |
f(3,atom1) = f(3,atom1) + dudz |
1164 |
|
1165 |
f(1,atom2) = f(1,atom2) - dudx |
1166 |
f(2,atom2) = f(2,atom2) - dudy |
1167 |
f(3,atom2) = f(3,atom2) - dudz |
1168 |
|
1169 |
if (i_is_Dipole .or. i_is_Quadrupole) then |
1170 |
t(1,atom1)=t(1,atom1) - uz_i(2)*duduz_i(3) + uz_i(3)*duduz_i(2) |
1171 |
t(2,atom1)=t(2,atom1) - uz_i(3)*duduz_i(1) + uz_i(1)*duduz_i(3) |
1172 |
t(3,atom1)=t(3,atom1) - uz_i(1)*duduz_i(2) + uz_i(2)*duduz_i(1) |
1173 |
endif |
1174 |
if (i_is_Quadrupole) then |
1175 |
t(1,atom1)=t(1,atom1) - ux_i(2)*dudux_i(3) + ux_i(3)*dudux_i(2) |
1176 |
t(2,atom1)=t(2,atom1) - ux_i(3)*dudux_i(1) + ux_i(1)*dudux_i(3) |
1177 |
t(3,atom1)=t(3,atom1) - ux_i(1)*dudux_i(2) + ux_i(2)*dudux_i(1) |
1178 |
|
1179 |
t(1,atom1)=t(1,atom1) - uy_i(2)*duduy_i(3) + uy_i(3)*duduy_i(2) |
1180 |
t(2,atom1)=t(2,atom1) - uy_i(3)*duduy_i(1) + uy_i(1)*duduy_i(3) |
1181 |
t(3,atom1)=t(3,atom1) - uy_i(1)*duduy_i(2) + uy_i(2)*duduy_i(1) |
1182 |
endif |
1183 |
|
1184 |
if (j_is_Dipole .or. j_is_Quadrupole) then |
1185 |
t(1,atom2)=t(1,atom2) - uz_j(2)*duduz_j(3) + uz_j(3)*duduz_j(2) |
1186 |
t(2,atom2)=t(2,atom2) - uz_j(3)*duduz_j(1) + uz_j(1)*duduz_j(3) |
1187 |
t(3,atom2)=t(3,atom2) - uz_j(1)*duduz_j(2) + uz_j(2)*duduz_j(1) |
1188 |
endif |
1189 |
if (j_is_Quadrupole) then |
1190 |
t(1,atom2)=t(1,atom2) - ux_j(2)*dudux_j(3) + ux_j(3)*dudux_j(2) |
1191 |
t(2,atom2)=t(2,atom2) - ux_j(3)*dudux_j(1) + ux_j(1)*dudux_j(3) |
1192 |
t(3,atom2)=t(3,atom2) - ux_j(1)*dudux_j(2) + ux_j(2)*dudux_j(1) |
1193 |
|
1194 |
t(1,atom2)=t(1,atom2) - uy_j(2)*duduy_j(3) + uy_j(3)*duduy_j(2) |
1195 |
t(2,atom2)=t(2,atom2) - uy_j(3)*duduy_j(1) + uy_j(1)*duduy_j(3) |
1196 |
t(3,atom2)=t(3,atom2) - uy_j(1)*duduy_j(2) + uy_j(2)*duduy_j(1) |
1197 |
endif |
1198 |
|
1199 |
#endif |
1200 |
|
1201 |
#ifdef IS_MPI |
1202 |
id1 = AtomRowToGlobal(atom1) |
1203 |
id2 = AtomColToGlobal(atom2) |
1204 |
#else |
1205 |
id1 = atom1 |
1206 |
id2 = atom2 |
1207 |
#endif |
1208 |
|
1209 |
if (molMembershipList(id1) .ne. molMembershipList(id2)) then |
1210 |
|
1211 |
fpair(1) = fpair(1) + dudx |
1212 |
fpair(2) = fpair(2) + dudy |
1213 |
fpair(3) = fpair(3) + dudz |
1214 |
|
1215 |
endif |
1216 |
|
1217 |
return |
1218 |
end subroutine doElectrostaticPair |
1219 |
|
1220 |
subroutine destroyElectrostaticTypes() |
1221 |
|
1222 |
if(allocated(ElectrostaticMap)) deallocate(ElectrostaticMap) |
1223 |
|
1224 |
end subroutine destroyElectrostaticTypes |
1225 |
|
1226 |
subroutine accumulate_rf(atom1, atom2, rij, eFrame, taper) |
1227 |
|
1228 |
integer, intent(in) :: atom1, atom2 |
1229 |
real (kind = dp), intent(in) :: rij |
1230 |
real (kind = dp), dimension(9,nLocal) :: eFrame |
1231 |
|
1232 |
integer :: me1, me2 |
1233 |
real (kind = dp), intent(in) :: taper |
1234 |
real (kind = dp):: mu1, mu2 |
1235 |
real (kind = dp), dimension(3) :: ul1 |
1236 |
real (kind = dp), dimension(3) :: ul2 |
1237 |
|
1238 |
integer :: localError |
1239 |
|
1240 |
#ifdef IS_MPI |
1241 |
me1 = atid_Row(atom1) |
1242 |
ul1(1) = eFrame_Row(3,atom1) |
1243 |
ul1(2) = eFrame_Row(6,atom1) |
1244 |
ul1(3) = eFrame_Row(9,atom1) |
1245 |
|
1246 |
me2 = atid_Col(atom2) |
1247 |
ul2(1) = eFrame_Col(3,atom2) |
1248 |
ul2(2) = eFrame_Col(6,atom2) |
1249 |
ul2(3) = eFrame_Col(9,atom2) |
1250 |
#else |
1251 |
me1 = atid(atom1) |
1252 |
ul1(1) = eFrame(3,atom1) |
1253 |
ul1(2) = eFrame(6,atom1) |
1254 |
ul1(3) = eFrame(9,atom1) |
1255 |
|
1256 |
me2 = atid(atom2) |
1257 |
ul2(1) = eFrame(3,atom2) |
1258 |
ul2(2) = eFrame(6,atom2) |
1259 |
ul2(3) = eFrame(9,atom2) |
1260 |
#endif |
1261 |
|
1262 |
mu1 = getDipoleMoment(me1) |
1263 |
mu2 = getDipoleMoment(me2) |
1264 |
|
1265 |
#ifdef IS_MPI |
1266 |
rf_Row(1,atom1) = rf_Row(1,atom1) + ul2(1)*mu2*taper |
1267 |
rf_Row(2,atom1) = rf_Row(2,atom1) + ul2(2)*mu2*taper |
1268 |
rf_Row(3,atom1) = rf_Row(3,atom1) + ul2(3)*mu2*taper |
1269 |
|
1270 |
rf_Col(1,atom2) = rf_Col(1,atom2) + ul1(1)*mu1*taper |
1271 |
rf_Col(2,atom2) = rf_Col(2,atom2) + ul1(2)*mu1*taper |
1272 |
rf_Col(3,atom2) = rf_Col(3,atom2) + ul1(3)*mu1*taper |
1273 |
#else |
1274 |
rf(1,atom1) = rf(1,atom1) + ul2(1)*mu2*taper |
1275 |
rf(2,atom1) = rf(2,atom1) + ul2(2)*mu2*taper |
1276 |
rf(3,atom1) = rf(3,atom1) + ul2(3)*mu2*taper |
1277 |
|
1278 |
rf(1,atom2) = rf(1,atom2) + ul1(1)*mu1*taper |
1279 |
rf(2,atom2) = rf(2,atom2) + ul1(2)*mu1*taper |
1280 |
rf(3,atom2) = rf(3,atom2) + ul1(3)*mu1*taper |
1281 |
#endif |
1282 |
return |
1283 |
end subroutine accumulate_rf |
1284 |
|
1285 |
subroutine accumulate_self_rf(atom1, mu1, eFrame) |
1286 |
|
1287 |
integer, intent(in) :: atom1 |
1288 |
real(kind=dp), intent(in) :: mu1 |
1289 |
real(kind=dp), dimension(9,nLocal) :: eFrame |
1290 |
|
1291 |
!! should work for both MPI and non-MPI version since this is not pairwise. |
1292 |
rf(1,atom1) = rf(1,atom1) + eFrame(3,atom1)*mu1 |
1293 |
rf(2,atom1) = rf(2,atom1) + eFrame(6,atom1)*mu1 |
1294 |
rf(3,atom1) = rf(3,atom1) + eFrame(9,atom1)*mu1 |
1295 |
|
1296 |
return |
1297 |
end subroutine accumulate_self_rf |
1298 |
|
1299 |
subroutine reaction_field_final(a1, mu1, eFrame, rfpot, t, do_pot) |
1300 |
|
1301 |
integer, intent(in) :: a1 |
1302 |
real (kind=dp), intent(in) :: mu1 |
1303 |
real (kind=dp), intent(inout) :: rfpot |
1304 |
logical, intent(in) :: do_pot |
1305 |
real (kind = dp), dimension(9,nLocal) :: eFrame |
1306 |
real (kind = dp), dimension(3,nLocal) :: t |
1307 |
|
1308 |
integer :: localError |
1309 |
|
1310 |
if (.not.preRFCalculated) then |
1311 |
call setReactionFieldPrefactor() |
1312 |
endif |
1313 |
|
1314 |
! compute torques on dipoles: |
1315 |
! pre converts from mu in units of debye to kcal/mol |
1316 |
|
1317 |
! The torque contribution is dipole cross reaction_field |
1318 |
|
1319 |
t(1,a1) = t(1,a1) + preRF*mu1*(eFrame(6,a1)*rf(3,a1) - & |
1320 |
eFrame(9,a1)*rf(2,a1)) |
1321 |
t(2,a1) = t(2,a1) + preRF*mu1*(eFrame(9,a1)*rf(1,a1) - & |
1322 |
eFrame(3,a1)*rf(3,a1)) |
1323 |
t(3,a1) = t(3,a1) + preRF*mu1*(eFrame(3,a1)*rf(2,a1) - & |
1324 |
eFrame(6,a1)*rf(1,a1)) |
1325 |
|
1326 |
! the potential contribution is -1/2 dipole dot reaction_field |
1327 |
|
1328 |
if (do_pot) then |
1329 |
rfpot = rfpot - 0.5d0 * preRF * mu1 * & |
1330 |
(rf(1,a1)*eFrame(3,a1) + rf(2,a1)*eFrame(6,a1) + & |
1331 |
rf(3,a1)*eFrame(9,a1)) |
1332 |
endif |
1333 |
|
1334 |
return |
1335 |
end subroutine reaction_field_final |
1336 |
|
1337 |
subroutine rf_correct_forces(atom1, atom2, d, rij, eFrame, taper, f, fpair) |
1338 |
|
1339 |
integer, intent(in) :: atom1, atom2 |
1340 |
real(kind=dp), dimension(3), intent(in) :: d |
1341 |
real(kind=dp), intent(in) :: rij, taper |
1342 |
real( kind = dp ), dimension(9,nLocal) :: eFrame |
1343 |
real( kind = dp ), dimension(3,nLocal) :: f |
1344 |
real( kind = dp ), dimension(3), intent(inout) :: fpair |
1345 |
|
1346 |
real (kind = dp), dimension(3) :: ul1 |
1347 |
real (kind = dp), dimension(3) :: ul2 |
1348 |
real (kind = dp) :: dtdr |
1349 |
real (kind = dp) :: dudx, dudy, dudz, u1dotu2 |
1350 |
integer :: me1, me2, id1, id2 |
1351 |
real (kind = dp) :: mu1, mu2 |
1352 |
|
1353 |
integer :: localError |
1354 |
|
1355 |
if (.not.preRFCalculated) then |
1356 |
call setReactionFieldPrefactor() |
1357 |
endif |
1358 |
|
1359 |
if (rij.le.rrf) then |
1360 |
|
1361 |
if (rij.lt.rt) then |
1362 |
dtdr = 0.0d0 |
1363 |
else |
1364 |
! write(*,*) 'rf correct in taper region' |
1365 |
dtdr = 6.0d0*(rij*rij - rij*rt - rij*rrf +rrf*rt)/((rrf-rt)**3) |
1366 |
endif |
1367 |
|
1368 |
#ifdef IS_MPI |
1369 |
me1 = atid_Row(atom1) |
1370 |
ul1(1) = eFrame_Row(3,atom1) |
1371 |
ul1(2) = eFrame_Row(6,atom1) |
1372 |
ul1(3) = eFrame_Row(9,atom1) |
1373 |
|
1374 |
me2 = atid_Col(atom2) |
1375 |
ul2(1) = eFrame_Col(3,atom2) |
1376 |
ul2(2) = eFrame_Col(6,atom2) |
1377 |
ul2(3) = eFrame_Col(9,atom2) |
1378 |
#else |
1379 |
me1 = atid(atom1) |
1380 |
ul1(1) = eFrame(3,atom1) |
1381 |
ul1(2) = eFrame(6,atom1) |
1382 |
ul1(3) = eFrame(9,atom1) |
1383 |
|
1384 |
me2 = atid(atom2) |
1385 |
ul2(1) = eFrame(3,atom2) |
1386 |
ul2(2) = eFrame(6,atom2) |
1387 |
ul2(3) = eFrame(9,atom2) |
1388 |
#endif |
1389 |
|
1390 |
mu1 = getDipoleMoment(me1) |
1391 |
mu2 = getDipoleMoment(me2) |
1392 |
|
1393 |
u1dotu2 = ul1(1)*ul2(1) + ul1(2)*ul2(2) + ul1(3)*ul2(3) |
1394 |
|
1395 |
dudx = - preRF*mu1*mu2*u1dotu2*dtdr*d(1)/rij |
1396 |
dudy = - preRF*mu1*mu2*u1dotu2*dtdr*d(2)/rij |
1397 |
dudz = - preRF*mu1*mu2*u1dotu2*dtdr*d(3)/rij |
1398 |
|
1399 |
#ifdef IS_MPI |
1400 |
f_Row(1,atom1) = f_Row(1,atom1) + dudx |
1401 |
f_Row(2,atom1) = f_Row(2,atom1) + dudy |
1402 |
f_Row(3,atom1) = f_Row(3,atom1) + dudz |
1403 |
|
1404 |
f_Col(1,atom2) = f_Col(1,atom2) - dudx |
1405 |
f_Col(2,atom2) = f_Col(2,atom2) - dudy |
1406 |
f_Col(3,atom2) = f_Col(3,atom2) - dudz |
1407 |
#else |
1408 |
f(1,atom1) = f(1,atom1) + dudx |
1409 |
f(2,atom1) = f(2,atom1) + dudy |
1410 |
f(3,atom1) = f(3,atom1) + dudz |
1411 |
|
1412 |
f(1,atom2) = f(1,atom2) - dudx |
1413 |
f(2,atom2) = f(2,atom2) - dudy |
1414 |
f(3,atom2) = f(3,atom2) - dudz |
1415 |
#endif |
1416 |
|
1417 |
#ifdef IS_MPI |
1418 |
id1 = AtomRowToGlobal(atom1) |
1419 |
id2 = AtomColToGlobal(atom2) |
1420 |
#else |
1421 |
id1 = atom1 |
1422 |
id2 = atom2 |
1423 |
#endif |
1424 |
|
1425 |
if (molMembershipList(id1) .ne. molMembershipList(id2)) then |
1426 |
|
1427 |
fpair(1) = fpair(1) + dudx |
1428 |
fpair(2) = fpair(2) + dudy |
1429 |
fpair(3) = fpair(3) + dudz |
1430 |
|
1431 |
endif |
1432 |
|
1433 |
end if |
1434 |
return |
1435 |
end subroutine rf_correct_forces |
1436 |
|
1437 |
end module electrostatic_module |