| 40 |
|
!! |
| 41 |
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|
| 42 |
|
module electrostatic_module |
| 43 |
< |
|
| 43 |
> |
|
| 44 |
|
use force_globals |
| 45 |
|
use definitions |
| 46 |
|
use atype_module |
| 54 |
|
|
| 55 |
|
PRIVATE |
| 56 |
|
|
| 57 |
+ |
#define __FORTRAN90 |
| 58 |
+ |
#include "UseTheForce/DarkSide/fElectrostaticSummationMethod.h" |
| 59 |
+ |
|
| 60 |
|
!! these prefactors convert the multipole interactions into kcal / mol |
| 61 |
|
!! all were computed assuming distances are measured in angstroms |
| 62 |
|
!! Charge-Charge, assuming charges are measured in electrons |
| 71 |
|
!! This unit is also known affectionately as an esu centi-barn. |
| 72 |
|
real(kind=dp), parameter :: pre14 = 69.13373_dp |
| 73 |
|
|
| 74 |
+ |
!! variables to handle different summation methods for long-range electrostatics: |
| 75 |
+ |
integer, save :: summationMethod = NONE |
| 76 |
+ |
real(kind=DP), save :: defaultCutoff = 0.0_DP |
| 77 |
+ |
logical, save :: haveDefaultCutoff = .false. |
| 78 |
+ |
real(kind=DP), save :: dampingAlpha = 0.0_DP |
| 79 |
+ |
logical, save :: haveDampingAlpha = .false. |
| 80 |
+ |
real(kind=DP), save :: dielectric = 0.0_DP |
| 81 |
+ |
logical, save :: haveDielectric = .false. |
| 82 |
+ |
real(kind=DP), save :: constERFC = 0.0_DP |
| 83 |
+ |
real(kind=DP), save :: constEXP = 0.0_DP |
| 84 |
+ |
logical, save :: haveDWAconstants = .false. |
| 85 |
+ |
|
| 86 |
+ |
|
| 87 |
+ |
public :: setElectrostaticSummationMethod |
| 88 |
+ |
public :: setElectrostaticCutoffRadius |
| 89 |
+ |
public :: setDampedWolfAlpha |
| 90 |
+ |
public :: setReactionFieldDielectric |
| 91 |
|
public :: newElectrostaticType |
| 92 |
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public :: setCharge |
| 93 |
|
public :: setDipoleMoment |
| 97 |
|
public :: getCharge |
| 98 |
|
public :: getDipoleMoment |
| 99 |
|
public :: pre22 |
| 100 |
+ |
public :: destroyElectrostaticTypes |
| 101 |
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|
| 102 |
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type :: Electrostatic |
| 103 |
|
integer :: c_ident |
| 105 |
|
logical :: is_Dipole = .false. |
| 106 |
|
logical :: is_SplitDipole = .false. |
| 107 |
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logical :: is_Quadrupole = .false. |
| 108 |
+ |
logical :: is_Tap = .false. |
| 109 |
|
real(kind=DP) :: charge = 0.0_DP |
| 110 |
|
real(kind=DP) :: dipole_moment = 0.0_DP |
| 111 |
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real(kind=DP) :: split_dipole_distance = 0.0_DP |
| 116 |
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|
| 117 |
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contains |
| 118 |
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|
| 119 |
+ |
subroutine setElectrostaticSummationMethod(the_ESM) |
| 120 |
+ |
|
| 121 |
+ |
integer, intent(in) :: the_ESM |
| 122 |
+ |
|
| 123 |
+ |
if ((the_ESM .le. 0) .or. (the_ESM .gt. REACTION_FIELD)) then |
| 124 |
+ |
call handleError("setElectrostaticSummationMethod", "Unsupported Summation Method") |
| 125 |
+ |
endif |
| 126 |
+ |
|
| 127 |
+ |
end subroutine setElectrostaticSummationMethod |
| 128 |
+ |
|
| 129 |
+ |
subroutine setElectrostaticCutoffRadius(thisRcut) |
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+ |
real(kind=dp), intent(in) :: thisRcut |
| 131 |
+ |
defaultCutoff = thisRcut |
| 132 |
+ |
haveDefaultCutoff = .true. |
| 133 |
+ |
end subroutine setElectrostaticCutoffRadius |
| 134 |
+ |
|
| 135 |
+ |
subroutine setDampedWolfAlpha(thisAlpha) |
| 136 |
+ |
real(kind=dp), intent(in) :: thisAlpha |
| 137 |
+ |
dampingAlpha = thisAlpha |
| 138 |
+ |
haveDampingAlpha = .true. |
| 139 |
+ |
end subroutine setDampedWolfAlpha |
| 140 |
+ |
|
| 141 |
+ |
subroutine setReactionFieldDielectric(thisDielectric) |
| 142 |
+ |
real(kind=dp), intent(in) :: thisDielectric |
| 143 |
+ |
dielectric = thisDielectric |
| 144 |
+ |
haveDielectric = .true. |
| 145 |
+ |
end subroutine setReactionFieldDielectric |
| 146 |
+ |
|
| 147 |
|
subroutine newElectrostaticType(c_ident, is_Charge, is_Dipole, & |
| 148 |
< |
is_SplitDipole, is_Quadrupole, status) |
| 149 |
< |
|
| 148 |
> |
is_SplitDipole, is_Quadrupole, is_Tap, status) |
| 149 |
> |
|
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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 |
| 157 |
|
integer :: nAtypes, myATID, i, j |
| 158 |
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|
| 159 |
|
status = 0 |
| 160 |
|
myATID = getFirstMatchingElement(atypes, "c_ident", c_ident) |
| 161 |
< |
|
| 161 |
> |
|
| 162 |
|
!! Be simple-minded and assume that we need an ElectrostaticMap that |
| 163 |
|
!! is the same size as the total number of atom types |
| 164 |
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|
| 165 |
|
if (.not.allocated(ElectrostaticMap)) then |
| 166 |
< |
|
| 166 |
> |
|
| 167 |
|
nAtypes = getSize(atypes) |
| 168 |
< |
|
| 168 |
> |
|
| 169 |
|
if (nAtypes == 0) then |
| 170 |
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status = -1 |
| 171 |
|
return |
| 172 |
|
end if |
| 173 |
< |
|
| 173 |
> |
|
| 174 |
|
if (.not. allocated(ElectrostaticMap)) then |
| 175 |
|
allocate(ElectrostaticMap(nAtypes)) |
| 176 |
|
endif |
| 177 |
< |
|
| 177 |
> |
|
| 178 |
|
end if |
| 179 |
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|
| 180 |
|
if (myATID .gt. size(ElectrostaticMap)) then |
| 181 |
|
status = -1 |
| 182 |
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return |
| 183 |
|
endif |
| 184 |
< |
|
| 184 |
> |
|
| 185 |
|
! set the values for ElectrostaticMap for this atom type: |
| 186 |
|
|
| 187 |
|
ElectrostaticMap(myATID)%c_ident = c_ident |
| 189 |
|
ElectrostaticMap(myATID)%is_Dipole = is_Dipole |
| 190 |
|
ElectrostaticMap(myATID)%is_SplitDipole = is_SplitDipole |
| 191 |
|
ElectrostaticMap(myATID)%is_Quadrupole = is_Quadrupole |
| 192 |
< |
|
| 192 |
> |
ElectrostaticMap(myATID)%is_Tap = is_Tap |
| 193 |
> |
|
| 194 |
|
end subroutine newElectrostaticType |
| 195 |
|
|
| 196 |
|
subroutine setCharge(c_ident, charge, status) |
| 218 |
|
call handleError("electrostatic", "Attempt to setCharge of an atom type that is not a charge!") |
| 219 |
|
status = -1 |
| 220 |
|
return |
| 221 |
< |
endif |
| 221 |
> |
endif |
| 222 |
|
|
| 223 |
|
ElectrostaticMap(myATID)%charge = charge |
| 224 |
|
end subroutine setCharge |
| 309 |
|
status = -1 |
| 310 |
|
return |
| 311 |
|
endif |
| 312 |
< |
|
| 312 |
> |
|
| 313 |
|
do i = 1, 3 |
| 314 |
< |
ElectrostaticMap(myATID)%quadrupole_moments(i) = & |
| 315 |
< |
quadrupole_moments(i) |
| 316 |
< |
enddo |
| 314 |
> |
ElectrostaticMap(myATID)%quadrupole_moments(i) = & |
| 315 |
> |
quadrupole_moments(i) |
| 316 |
> |
enddo |
| 317 |
|
|
| 318 |
|
end subroutine setQuadrupoleMoments |
| 319 |
|
|
| 320 |
< |
|
| 320 |
> |
|
| 321 |
|
function getCharge(atid) result (c) |
| 322 |
|
integer, intent(in) :: atid |
| 323 |
|
integer :: localError |
| 324 |
|
real(kind=dp) :: c |
| 325 |
< |
|
| 325 |
> |
|
| 326 |
|
if (.not.allocated(ElectrostaticMap)) then |
| 327 |
|
call handleError("electrostatic", "no ElectrostaticMap was present before first call of getCharge!") |
| 328 |
|
return |
| 329 |
|
end if |
| 330 |
< |
|
| 330 |
> |
|
| 331 |
|
if (.not.ElectrostaticMap(atid)%is_Charge) then |
| 332 |
|
call handleError("electrostatic", "getCharge was called for an atom type that isn't a charge!") |
| 333 |
|
return |
| 334 |
|
endif |
| 335 |
< |
|
| 335 |
> |
|
| 336 |
|
c = ElectrostaticMap(atid)%charge |
| 337 |
|
end function getCharge |
| 338 |
|
|
| 340 |
|
integer, intent(in) :: atid |
| 341 |
|
integer :: localError |
| 342 |
|
real(kind=dp) :: dm |
| 343 |
< |
|
| 343 |
> |
|
| 344 |
|
if (.not.allocated(ElectrostaticMap)) then |
| 345 |
|
call handleError("electrostatic", "no ElectrostaticMap was present before first call of getDipoleMoment!") |
| 346 |
|
return |
| 347 |
|
end if |
| 348 |
< |
|
| 348 |
> |
|
| 349 |
|
if (.not.ElectrostaticMap(atid)%is_Dipole) then |
| 350 |
|
call handleError("electrostatic", "getDipoleMoment was called for an atom type that isn't a dipole!") |
| 351 |
|
return |
| 352 |
|
endif |
| 353 |
< |
|
| 353 |
> |
|
| 354 |
|
dm = ElectrostaticMap(atid)%dipole_moment |
| 355 |
|
end function getDipoleMoment |
| 356 |
|
|
| 357 |
< |
subroutine doElectrostaticPair(atom1, atom2, d, rij, r2, sw, & |
| 358 |
< |
vpair, fpair, pot, eFrame, f, t, do_pot) |
| 359 |
< |
|
| 357 |
> |
subroutine checkSummationMethod() |
| 358 |
> |
|
| 359 |
> |
if (summationMethod .eq. DAMPED_WOLF) then |
| 360 |
> |
if (.not.haveDWAconstants) then |
| 361 |
> |
|
| 362 |
> |
if (.not.haveDampingAlpha) then |
| 363 |
> |
call handleError("checkSummationMethod", "no Damping Alpha set!") |
| 364 |
> |
endif |
| 365 |
> |
|
| 366 |
> |
if (.not.have....) |
| 367 |
> |
constEXP = |
| 368 |
> |
constERFC = |
| 369 |
> |
|
| 370 |
> |
haveDWAconstants = .true. |
| 371 |
> |
endif |
| 372 |
> |
endif |
| 373 |
> |
|
| 374 |
> |
end subroutine checkSummationMethod |
| 375 |
> |
|
| 376 |
> |
|
| 377 |
> |
|
| 378 |
> |
subroutine doElectrostaticPair(atom1, atom2, d, rij, r2, sw, & |
| 379 |
> |
vpair, fpair, pot, eFrame, f, t, do_pot, corrMethod, rcuti) |
| 380 |
> |
|
| 381 |
|
logical, intent(in) :: do_pot |
| 382 |
< |
|
| 382 |
> |
|
| 383 |
|
integer, intent(in) :: atom1, atom2 |
| 384 |
|
integer :: localError |
| 385 |
+ |
integer, intent(in) :: corrMethod |
| 386 |
|
|
| 387 |
< |
real(kind=dp), intent(in) :: rij, r2, sw |
| 387 |
> |
real(kind=dp), intent(in) :: rij, r2, sw, rcuti |
| 388 |
|
real(kind=dp), intent(in), dimension(3) :: d |
| 389 |
|
real(kind=dp), intent(inout) :: vpair |
| 390 |
|
real(kind=dp), intent(inout), dimension(3) :: fpair |
| 391 |
|
|
| 392 |
< |
real( kind = dp ) :: pot |
| 392 |
> |
real( kind = dp ) :: pot, swi |
| 393 |
|
real( kind = dp ), dimension(9,nLocal) :: eFrame |
| 394 |
|
real( kind = dp ), dimension(3,nLocal) :: f |
| 395 |
|
real( kind = dp ), dimension(3,nLocal) :: t |
| 396 |
< |
|
| 396 |
> |
|
| 397 |
|
real (kind = dp), dimension(3) :: ux_i, uy_i, uz_i |
| 398 |
|
real (kind = dp), dimension(3) :: ux_j, uy_j, uz_j |
| 399 |
|
real (kind = dp), dimension(3) :: dudux_i, duduy_i, duduz_i |
| 401 |
|
|
| 402 |
|
logical :: i_is_Charge, i_is_Dipole, i_is_SplitDipole, i_is_Quadrupole |
| 403 |
|
logical :: j_is_Charge, j_is_Dipole, j_is_SplitDipole, j_is_Quadrupole |
| 404 |
+ |
logical :: i_is_Tap, j_is_Tap |
| 405 |
|
integer :: me1, me2, id1, id2 |
| 406 |
|
real (kind=dp) :: q_i, q_j, mu_i, mu_j, d_i, d_j |
| 407 |
|
real (kind=dp) :: qxx_i, qyy_i, qzz_i |
| 411 |
|
real (kind=dp) :: cx2, cy2, cz2 |
| 412 |
|
real (kind=dp) :: ct_i, ct_j, ct_ij, a1 |
| 413 |
|
real (kind=dp) :: riji, ri, ri2, ri3, ri4 |
| 414 |
< |
real (kind=dp) :: pref, vterm, epot, dudr |
| 414 |
> |
real (kind=dp) :: pref, vterm, epot, dudr, vterm1, vterm2 |
| 415 |
|
real (kind=dp) :: xhat, yhat, zhat |
| 416 |
|
real (kind=dp) :: dudx, dudy, dudz |
| 417 |
< |
real (kind=dp) :: drdxj, drdyj, drdzj |
| 418 |
< |
real (kind=dp) :: scale, sc2, bigR |
| 417 |
> |
real (kind=dp) :: scale, sc2, bigR, switcher, dswitcher |
| 418 |
> |
real (kind=dp) :: rcuti2, rcuti3, rcuti4 |
| 419 |
|
|
| 420 |
|
if (.not.allocated(ElectrostaticMap)) then |
| 421 |
|
call handleError("electrostatic", "no ElectrostaticMap was present before first call of do_electrostatic_pair!") |
| 422 |
|
return |
| 423 |
|
end if |
| 424 |
|
|
| 425 |
+ |
if (.not.summationMethodChecked) then |
| 426 |
+ |
call checkSummationMethod() |
| 427 |
+ |
endif |
| 428 |
+ |
|
| 429 |
+ |
|
| 430 |
|
#ifdef IS_MPI |
| 431 |
|
me1 = atid_Row(atom1) |
| 432 |
|
me2 = atid_Col(atom2) |
| 443 |
|
yhat = d(2) * riji |
| 444 |
|
zhat = d(3) * riji |
| 445 |
|
|
| 446 |
< |
drdxj = xhat |
| 447 |
< |
drdyj = yhat |
| 448 |
< |
drdzj = zhat |
| 446 |
> |
rcuti2 = rcuti*rcuti |
| 447 |
> |
rcuti3 = rcuti2*rcuti |
| 448 |
> |
rcuti4 = rcuti2*rcuti2 |
| 449 |
|
|
| 450 |
< |
!! logicals |
| 450 |
> |
swi = 1.0d0 / sw |
| 451 |
|
|
| 452 |
+ |
!! logicals |
| 453 |
|
i_is_Charge = ElectrostaticMap(me1)%is_Charge |
| 454 |
|
i_is_Dipole = ElectrostaticMap(me1)%is_Dipole |
| 455 |
|
i_is_SplitDipole = ElectrostaticMap(me1)%is_SplitDipole |
| 456 |
|
i_is_Quadrupole = ElectrostaticMap(me1)%is_Quadrupole |
| 457 |
+ |
i_is_Tap = ElectrostaticMap(me1)%is_Tap |
| 458 |
|
|
| 459 |
|
j_is_Charge = ElectrostaticMap(me2)%is_Charge |
| 460 |
|
j_is_Dipole = ElectrostaticMap(me2)%is_Dipole |
| 461 |
|
j_is_SplitDipole = ElectrostaticMap(me2)%is_SplitDipole |
| 462 |
|
j_is_Quadrupole = ElectrostaticMap(me2)%is_Quadrupole |
| 463 |
+ |
j_is_Tap = ElectrostaticMap(me2)%is_Tap |
| 464 |
|
|
| 465 |
|
if (i_is_Charge) then |
| 466 |
|
q_i = ElectrostaticMap(me1)%charge |
| 467 |
|
endif |
| 468 |
< |
|
| 468 |
> |
|
| 469 |
|
if (i_is_Dipole) then |
| 470 |
|
mu_i = ElectrostaticMap(me1)%dipole_moment |
| 471 |
|
#ifdef IS_MPI |
| 482 |
|
if (i_is_SplitDipole) then |
| 483 |
|
d_i = ElectrostaticMap(me1)%split_dipole_distance |
| 484 |
|
endif |
| 485 |
< |
|
| 485 |
> |
|
| 486 |
|
endif |
| 487 |
|
|
| 488 |
|
if (i_is_Quadrupole) then |
| 515 |
|
cz_i = uz_i(1)*xhat + uz_i(2)*yhat + uz_i(3)*zhat |
| 516 |
|
endif |
| 517 |
|
|
| 435 |
– |
|
| 518 |
|
if (j_is_Charge) then |
| 519 |
|
q_j = ElectrostaticMap(me2)%charge |
| 520 |
|
endif |
| 521 |
< |
|
| 521 |
> |
|
| 522 |
|
if (j_is_Dipole) then |
| 523 |
|
mu_j = ElectrostaticMap(me2)%dipole_moment |
| 524 |
|
#ifdef IS_MPI |
| 530 |
|
uz_j(2) = eFrame(6,atom2) |
| 531 |
|
uz_j(3) = eFrame(9,atom2) |
| 532 |
|
#endif |
| 533 |
< |
ct_j = uz_j(1)*drdxj + uz_j(2)*drdyj + uz_j(3)*drdzj |
| 533 |
> |
ct_j = uz_j(1)*xhat + uz_j(2)*yhat + uz_j(3)*zhat |
| 534 |
|
|
| 535 |
|
if (j_is_SplitDipole) then |
| 536 |
|
d_j = ElectrostaticMap(me2)%split_dipole_distance |
| 566 |
|
cy_j = uy_j(1)*xhat + uy_j(2)*yhat + uy_j(3)*zhat |
| 567 |
|
cz_j = uz_j(1)*xhat + uz_j(2)*yhat + uz_j(3)*zhat |
| 568 |
|
endif |
| 569 |
+ |
|
| 570 |
+ |
!!$ switcher = 1.0d0 |
| 571 |
+ |
!!$ dswitcher = 0.0d0 |
| 572 |
+ |
!!$ ebalance = 0.0d0 |
| 573 |
+ |
!!$ ! weaken the dipole interaction at close range for TAP water |
| 574 |
+ |
!!$ if (j_is_Tap .and. i_is_Tap) then |
| 575 |
+ |
!!$ call calc_switch(rij, mu_i, switcher, dswitcher) |
| 576 |
+ |
!!$ endif |
| 577 |
|
|
| 578 |
|
epot = 0.0_dp |
| 579 |
|
dudx = 0.0_dp |
| 591 |
|
if (i_is_Charge) then |
| 592 |
|
|
| 593 |
|
if (j_is_Charge) then |
| 504 |
– |
|
| 505 |
– |
vterm = pre11 * q_i * q_j * riji |
| 506 |
– |
vpair = vpair + vterm |
| 507 |
– |
epot = epot + sw*vterm |
| 594 |
|
|
| 595 |
< |
dudr = - sw * vterm * riji |
| 595 |
> |
if (corrMethod .eq. 1) then |
| 596 |
> |
vterm = pre11 * q_i * q_j * (riji - rcuti) |
| 597 |
|
|
| 598 |
< |
dudx = dudx + dudr * drdxj |
| 599 |
< |
dudy = dudy + dudr * drdyj |
| 600 |
< |
dudz = dudz + dudr * drdzj |
| 601 |
< |
|
| 598 |
> |
vpair = vpair + vterm |
| 599 |
> |
epot = epot + sw * vterm |
| 600 |
> |
|
| 601 |
> |
dudr = - sw * pre11 * q_i * q_j * (riji*riji*riji - rcuti2*rcuti) |
| 602 |
> |
|
| 603 |
> |
dudx = dudx + dudr * d(1) |
| 604 |
> |
dudy = dudy + dudr * d(2) |
| 605 |
> |
dudz = dudz + dudr * d(3) |
| 606 |
> |
|
| 607 |
> |
else |
| 608 |
> |
vterm = pre11 * q_i * q_j * riji |
| 609 |
> |
|
| 610 |
> |
vpair = vpair + vterm |
| 611 |
> |
epot = epot + sw * vterm |
| 612 |
> |
|
| 613 |
> |
dudr = - sw * vterm * riji |
| 614 |
> |
|
| 615 |
> |
dudx = dudx + dudr * xhat |
| 616 |
> |
dudy = dudy + dudr * yhat |
| 617 |
> |
dudz = dudz + dudr * zhat |
| 618 |
> |
|
| 619 |
> |
endif |
| 620 |
> |
|
| 621 |
|
endif |
| 622 |
|
|
| 623 |
|
if (j_is_Dipole) then |
| 624 |
|
|
| 625 |
< |
if (j_is_SplitDipole) then |
| 520 |
< |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
| 521 |
< |
ri = 1.0_dp / BigR |
| 522 |
< |
scale = rij * ri |
| 523 |
< |
else |
| 524 |
< |
ri = riji |
| 525 |
< |
scale = 1.0_dp |
| 526 |
< |
endif |
| 625 |
> |
pref = sw * pre12 * q_i * mu_j |
| 626 |
|
|
| 627 |
< |
ri2 = ri * ri |
| 628 |
< |
ri3 = ri2 * ri |
| 629 |
< |
sc2 = scale * scale |
| 627 |
> |
if (corrMethod .eq. 1) then |
| 628 |
> |
ri2 = riji * riji |
| 629 |
> |
ri3 = ri2 * riji |
| 630 |
> |
|
| 631 |
> |
vterm = - pref * ct_j * (ri2 - rcuti2) |
| 632 |
> |
vpair = vpair + swi*vterm |
| 633 |
> |
epot = epot + vterm |
| 634 |
|
|
| 635 |
< |
pref = pre12 * q_i * mu_j |
| 636 |
< |
vterm = - pref * ct_j * ri2 * scale |
| 637 |
< |
vpair = vpair + vterm |
| 638 |
< |
epot = epot + sw * vterm |
| 635 |
> |
!! this has a + sign in the () because the rij vector is |
| 636 |
> |
!! r_j - r_i and the charge-dipole potential takes the origin |
| 637 |
> |
!! as the point dipole, which is atom j in this case. |
| 638 |
> |
|
| 639 |
> |
dudx = dudx - pref * ( ri3*( uz_j(1) - 3.0d0*ct_j*xhat) & |
| 640 |
> |
- rcuti3*( uz_j(1) - 3.0d0*ct_j*d(1)*rcuti ) ) |
| 641 |
> |
dudy = dudy - pref * ( ri3*( uz_j(2) - 3.0d0*ct_j*yhat) & |
| 642 |
> |
- rcuti3*( uz_j(2) - 3.0d0*ct_j*d(2)*rcuti ) ) |
| 643 |
> |
dudz = dudz - pref * ( ri3*( uz_j(3) - 3.0d0*ct_j*zhat) & |
| 644 |
> |
- rcuti3*( uz_j(3) - 3.0d0*ct_j*d(3)*rcuti ) ) |
| 645 |
> |
|
| 646 |
> |
duduz_j(1) = duduz_j(1) - pref*( ri2*xhat - d(1)*rcuti3 ) |
| 647 |
> |
duduz_j(2) = duduz_j(2) - pref*( ri2*yhat - d(2)*rcuti3 ) |
| 648 |
> |
duduz_j(3) = duduz_j(3) - pref*( ri2*zhat - d(3)*rcuti3 ) |
| 649 |
|
|
| 650 |
< |
!! this has a + sign in the () because the rij vector is |
| 651 |
< |
!! r_j - r_i and the charge-dipole potential takes the origin |
| 652 |
< |
!! as the point dipole, which is atom j in this case. |
| 650 |
> |
else |
| 651 |
> |
if (j_is_SplitDipole) then |
| 652 |
> |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
| 653 |
> |
ri = 1.0_dp / BigR |
| 654 |
> |
scale = rij * ri |
| 655 |
> |
else |
| 656 |
> |
ri = riji |
| 657 |
> |
scale = 1.0_dp |
| 658 |
> |
endif |
| 659 |
> |
|
| 660 |
> |
ri2 = ri * ri |
| 661 |
> |
ri3 = ri2 * ri |
| 662 |
> |
sc2 = scale * scale |
| 663 |
> |
|
| 664 |
> |
vterm = - pref * ct_j * ri2 * scale |
| 665 |
> |
vpair = vpair + swi * vterm |
| 666 |
> |
epot = epot + vterm |
| 667 |
> |
|
| 668 |
> |
!! this has a + sign in the () because the rij vector is |
| 669 |
> |
!! r_j - r_i and the charge-dipole potential takes the origin |
| 670 |
> |
!! as the point dipole, which is atom j in this case. |
| 671 |
> |
|
| 672 |
> |
dudx = dudx - pref * ri3 * ( uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
| 673 |
> |
dudy = dudy - pref * ri3 * ( uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
| 674 |
> |
dudz = dudz - pref * ri3 * ( uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
| 675 |
> |
|
| 676 |
> |
duduz_j(1) = duduz_j(1) - pref * ri2 * xhat * scale |
| 677 |
> |
duduz_j(2) = duduz_j(2) - pref * ri2 * yhat * scale |
| 678 |
> |
duduz_j(3) = duduz_j(3) - pref * ri2 * zhat * scale |
| 679 |
|
|
| 680 |
< |
dudx = dudx - pref * sw * ri3 * ( uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
| 542 |
< |
dudy = dudy - pref * sw * ri3 * ( uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
| 543 |
< |
dudz = dudz - pref * sw * ri3 * ( uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
| 544 |
< |
|
| 545 |
< |
duduz_j(1) = duduz_j(1) - pref * sw * ri2 * xhat * scale |
| 546 |
< |
duduz_j(2) = duduz_j(2) - pref * sw * ri2 * yhat * scale |
| 547 |
< |
duduz_j(3) = duduz_j(3) - pref * sw * ri2 * zhat * scale |
| 548 |
< |
|
| 680 |
> |
endif |
| 681 |
|
endif |
| 682 |
|
|
| 683 |
|
if (j_is_Quadrupole) then |
| 689 |
|
cz2 = cz_j * cz_j |
| 690 |
|
|
| 691 |
|
|
| 692 |
< |
pref = pre14 * q_i / 1.0_dp |
| 561 |
< |
vterm = pref * ri3 * (qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
| 562 |
< |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
| 563 |
< |
qzz_j * (3.0_dp*cz2 - 1.0_dp)) |
| 564 |
< |
vpair = vpair + vterm |
| 565 |
< |
epot = epot + sw * vterm |
| 692 |
> |
pref = sw * pre14 * q_i / 3.0_dp |
| 693 |
|
|
| 694 |
< |
dudx = dudx - 5.0_dp*sw*vterm*riji*xhat + pref * sw * ri4 * ( & |
| 695 |
< |
qxx_j*(6.0_dp*cx_j*ux_j(1) - 2.0_dp*xhat) + & |
| 696 |
< |
qyy_j*(6.0_dp*cy_j*uy_j(1) - 2.0_dp*xhat) + & |
| 697 |
< |
qzz_j*(6.0_dp*cz_j*uz_j(1) - 2.0_dp*xhat) ) |
| 698 |
< |
dudy = dudy - 5.0_dp*sw*vterm*riji*yhat + pref * sw * ri4 * ( & |
| 699 |
< |
qxx_j*(6.0_dp*cx_j*ux_j(2) - 2.0_dp*yhat) + & |
| 700 |
< |
qyy_j*(6.0_dp*cy_j*uy_j(2) - 2.0_dp*yhat) + & |
| 701 |
< |
qzz_j*(6.0_dp*cz_j*uz_j(2) - 2.0_dp*yhat) ) |
| 702 |
< |
dudz = dudz - 5.0_dp*sw*vterm*riji*zhat + pref * sw * ri4 * ( & |
| 703 |
< |
qxx_j*(6.0_dp*cx_j*ux_j(3) - 2.0_dp*zhat) + & |
| 704 |
< |
qyy_j*(6.0_dp*cy_j*uy_j(3) - 2.0_dp*zhat) + & |
| 705 |
< |
qzz_j*(6.0_dp*cz_j*uz_j(3) - 2.0_dp*zhat) ) |
| 694 |
> |
if (corrMethod .eq. 1) then |
| 695 |
> |
vterm1 = pref * ri3*( qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
| 696 |
> |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
| 697 |
> |
qzz_j * (3.0_dp*cz2 - 1.0_dp) ) |
| 698 |
> |
vterm2 = pref * rcuti3*( qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
| 699 |
> |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
| 700 |
> |
qzz_j * (3.0_dp*cz2 - 1.0_dp) ) |
| 701 |
> |
vpair = vpair + swi*( vterm1 - vterm2 ) |
| 702 |
> |
epot = epot + ( vterm1 - vterm2 ) |
| 703 |
> |
|
| 704 |
> |
dudx = dudx - (5.0_dp * & |
| 705 |
> |
(vterm1*riji*xhat - vterm2*rcuti2*d(1))) + pref * ( & |
| 706 |
> |
(ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(1)) - & |
| 707 |
> |
qxx_j*2.0_dp*(xhat - rcuti*d(1))) + & |
| 708 |
> |
(ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(1)) - & |
| 709 |
> |
qyy_j*2.0_dp*(xhat - rcuti*d(1))) + & |
| 710 |
> |
(ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(1)) - & |
| 711 |
> |
qzz_j*2.0_dp*(xhat - rcuti*d(1))) ) |
| 712 |
> |
dudy = dudy - (5.0_dp * & |
| 713 |
> |
(vterm1*riji*yhat - vterm2*rcuti2*d(2))) + pref * ( & |
| 714 |
> |
(ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(2)) - & |
| 715 |
> |
qxx_j*2.0_dp*(yhat - rcuti*d(2))) + & |
| 716 |
> |
(ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(2)) - & |
| 717 |
> |
qyy_j*2.0_dp*(yhat - rcuti*d(2))) + & |
| 718 |
> |
(ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(2)) - & |
| 719 |
> |
qzz_j*2.0_dp*(yhat - rcuti*d(2))) ) |
| 720 |
> |
dudz = dudz - (5.0_dp * & |
| 721 |
> |
(vterm1*riji*zhat - vterm2*rcuti2*d(3))) + pref * ( & |
| 722 |
> |
(ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(3)) - & |
| 723 |
> |
qxx_j*2.0_dp*(zhat - rcuti*d(3))) + & |
| 724 |
> |
(ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(3)) - & |
| 725 |
> |
qyy_j*2.0_dp*(zhat - rcuti*d(3))) + & |
| 726 |
> |
(ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(3)) - & |
| 727 |
> |
qzz_j*2.0_dp*(zhat - rcuti*d(3))) ) |
| 728 |
> |
|
| 729 |
> |
dudux_j(1) = dudux_j(1) + pref * (ri3*(qxx_j*6.0_dp*cx_j*xhat) - & |
| 730 |
> |
rcuti4*(qxx_j*6.0_dp*cx_j*d(1))) |
| 731 |
> |
dudux_j(2) = dudux_j(2) + pref * (ri3*(qxx_j*6.0_dp*cx_j*yhat) - & |
| 732 |
> |
rcuti4*(qxx_j*6.0_dp*cx_j*d(2))) |
| 733 |
> |
dudux_j(3) = dudux_j(3) + pref * (ri3*(qxx_j*6.0_dp*cx_j*zhat) - & |
| 734 |
> |
rcuti4*(qxx_j*6.0_dp*cx_j*d(3))) |
| 735 |
> |
|
| 736 |
> |
duduy_j(1) = duduy_j(1) + pref * (ri3*(qyy_j*6.0_dp*cy_j*xhat) - & |
| 737 |
> |
rcuti4*(qyy_j*6.0_dp*cx_j*d(1))) |
| 738 |
> |
duduy_j(2) = duduy_j(2) + pref * (ri3*(qyy_j*6.0_dp*cy_j*yhat) - & |
| 739 |
> |
rcuti4*(qyy_j*6.0_dp*cx_j*d(2))) |
| 740 |
> |
duduy_j(3) = duduy_j(3) + pref * (ri3*(qyy_j*6.0_dp*cy_j*zhat) - & |
| 741 |
> |
rcuti4*(qyy_j*6.0_dp*cx_j*d(3))) |
| 742 |
> |
|
| 743 |
> |
duduz_j(1) = duduz_j(1) + pref * (ri3*(qzz_j*6.0_dp*cz_j*xhat) - & |
| 744 |
> |
rcuti4*(qzz_j*6.0_dp*cx_j*d(1))) |
| 745 |
> |
duduz_j(2) = duduz_j(2) + pref * (ri3*(qzz_j*6.0_dp*cz_j*yhat) - & |
| 746 |
> |
rcuti4*(qzz_j*6.0_dp*cx_j*d(2))) |
| 747 |
> |
duduz_j(3) = duduz_j(3) + pref * (ri3*(qzz_j*6.0_dp*cz_j*zhat) - & |
| 748 |
> |
rcuti4*(qzz_j*6.0_dp*cx_j*d(3))) |
| 749 |
> |
|
| 750 |
> |
else |
| 751 |
> |
vterm = pref * ri3 * (qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
| 752 |
> |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
| 753 |
> |
qzz_j * (3.0_dp*cz2 - 1.0_dp)) |
| 754 |
> |
vpair = vpair + swi * vterm |
| 755 |
> |
epot = epot + vterm |
| 756 |
> |
|
| 757 |
> |
dudx = dudx - 5.0_dp*vterm*riji*xhat + pref * ri4 * ( & |
| 758 |
> |
qxx_j*(6.0_dp*cx_j*ux_j(1) - 2.0_dp*xhat) + & |
| 759 |
> |
qyy_j*(6.0_dp*cy_j*uy_j(1) - 2.0_dp*xhat) + & |
| 760 |
> |
qzz_j*(6.0_dp*cz_j*uz_j(1) - 2.0_dp*xhat) ) |
| 761 |
> |
dudy = dudy - 5.0_dp*vterm*riji*yhat + pref * ri4 * ( & |
| 762 |
> |
qxx_j*(6.0_dp*cx_j*ux_j(2) - 2.0_dp*yhat) + & |
| 763 |
> |
qyy_j*(6.0_dp*cy_j*uy_j(2) - 2.0_dp*yhat) + & |
| 764 |
> |
qzz_j*(6.0_dp*cz_j*uz_j(2) - 2.0_dp*yhat) ) |
| 765 |
> |
dudz = dudz - 5.0_dp*vterm*riji*zhat + pref * ri4 * ( & |
| 766 |
> |
qxx_j*(6.0_dp*cx_j*ux_j(3) - 2.0_dp*zhat) + & |
| 767 |
> |
qyy_j*(6.0_dp*cy_j*uy_j(3) - 2.0_dp*zhat) + & |
| 768 |
> |
qzz_j*(6.0_dp*cz_j*uz_j(3) - 2.0_dp*zhat) ) |
| 769 |
> |
|
| 770 |
> |
dudux_j(1) = dudux_j(1) + pref * ri3*(qxx_j*6.0_dp*cx_j*xhat) |
| 771 |
> |
dudux_j(2) = dudux_j(2) + pref * ri3*(qxx_j*6.0_dp*cx_j*yhat) |
| 772 |
> |
dudux_j(3) = dudux_j(3) + pref * ri3*(qxx_j*6.0_dp*cx_j*zhat) |
| 773 |
> |
|
| 774 |
> |
duduy_j(1) = duduy_j(1) + pref * ri3*(qyy_j*6.0_dp*cy_j*xhat) |
| 775 |
> |
duduy_j(2) = duduy_j(2) + pref * ri3*(qyy_j*6.0_dp*cy_j*yhat) |
| 776 |
> |
duduy_j(3) = duduy_j(3) + pref * ri3*(qyy_j*6.0_dp*cy_j*zhat) |
| 777 |
> |
|
| 778 |
> |
duduz_j(1) = duduz_j(1) + pref * ri3*(qzz_j*6.0_dp*cz_j*xhat) |
| 779 |
> |
duduz_j(2) = duduz_j(2) + pref * ri3*(qzz_j*6.0_dp*cz_j*yhat) |
| 780 |
> |
duduz_j(3) = duduz_j(3) + pref * ri3*(qzz_j*6.0_dp*cz_j*zhat) |
| 781 |
|
|
| 782 |
< |
dudux_j(1) = dudux_j(1) + pref * sw * ri3 * (qxx_j*6.0_dp*cx_j*xhat) |
| 581 |
< |
dudux_j(2) = dudux_j(2) + pref * sw * ri3 * (qxx_j*6.0_dp*cx_j*yhat) |
| 582 |
< |
dudux_j(3) = dudux_j(3) + pref * sw * ri3 * (qxx_j*6.0_dp*cx_j*zhat) |
| 583 |
< |
|
| 584 |
< |
duduy_j(1) = duduy_j(1) + pref * sw * ri3 * (qyy_j*6.0_dp*cy_j*xhat) |
| 585 |
< |
duduy_j(2) = duduy_j(2) + pref * sw * ri3 * (qyy_j*6.0_dp*cy_j*yhat) |
| 586 |
< |
duduy_j(3) = duduy_j(3) + pref * sw * ri3 * (qyy_j*6.0_dp*cy_j*zhat) |
| 587 |
< |
|
| 588 |
< |
duduz_j(1) = duduz_j(1) + pref * sw * ri3 * (qzz_j*6.0_dp*cz_j*xhat) |
| 589 |
< |
duduz_j(2) = duduz_j(2) + pref * sw * ri3 * (qzz_j*6.0_dp*cz_j*yhat) |
| 590 |
< |
duduz_j(3) = duduz_j(3) + pref * sw * ri3 * (qzz_j*6.0_dp*cz_j*zhat) |
| 782 |
> |
endif |
| 783 |
|
endif |
| 592 |
– |
|
| 784 |
|
endif |
| 785 |
< |
|
| 785 |
> |
|
| 786 |
|
if (i_is_Dipole) then |
| 787 |
< |
|
| 787 |
> |
|
| 788 |
|
if (j_is_Charge) then |
| 789 |
|
|
| 790 |
< |
if (i_is_SplitDipole) then |
| 600 |
< |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
| 601 |
< |
ri = 1.0_dp / BigR |
| 602 |
< |
scale = rij * ri |
| 603 |
< |
else |
| 604 |
< |
ri = riji |
| 605 |
< |
scale = 1.0_dp |
| 606 |
< |
endif |
| 790 |
> |
pref = sw * pre12 * q_j * mu_i |
| 791 |
|
|
| 792 |
< |
ri2 = ri * ri |
| 793 |
< |
ri3 = ri2 * ri |
| 794 |
< |
sc2 = scale * scale |
| 792 |
> |
if (corrMethod .eq. 1) then |
| 793 |
> |
ri2 = riji * riji |
| 794 |
> |
ri3 = ri2 * riji |
| 795 |
> |
|
| 796 |
> |
vterm = pref * ct_i * (ri2 - rcuti2) |
| 797 |
> |
vpair = vpair + swi * vterm |
| 798 |
> |
epot = epot + vterm |
| 799 |
|
|
| 800 |
< |
pref = pre12 * q_j * mu_i |
| 801 |
< |
vterm = pref * ct_i * ri2 * scale |
| 802 |
< |
vpair = vpair + vterm |
| 803 |
< |
epot = epot + sw * vterm |
| 800 |
> |
!! this has a + sign in the () because the rij vector is |
| 801 |
> |
!! r_j - r_i and the charge-dipole potential takes the origin |
| 802 |
> |
!! as the point dipole, which is atom j in this case. |
| 803 |
> |
|
| 804 |
> |
dudx = dudx + pref * ( ri3*( uz_i(1) - 3.0d0*ct_i*xhat) & |
| 805 |
> |
- rcuti3*( uz_i(1) - 3.0d0*ct_i*d(1)*rcuti ) ) |
| 806 |
> |
dudy = dudy + pref * ( ri3*( uz_i(2) - 3.0d0*ct_i*yhat) & |
| 807 |
> |
- rcuti3*( uz_i(2) - 3.0d0*ct_i*d(2)*rcuti ) ) |
| 808 |
> |
dudz = dudz + pref * ( ri3*( uz_i(3) - 3.0d0*ct_i*zhat) & |
| 809 |
> |
- rcuti3*( uz_i(3) - 3.0d0*ct_i*d(3)*rcuti ) ) |
| 810 |
> |
|
| 811 |
> |
duduz_i(1) = duduz_i(1) - pref*( ri2*xhat - d(1)*rcuti3 ) |
| 812 |
> |
duduz_i(2) = duduz_i(2) - pref*( ri2*yhat - d(2)*rcuti3 ) |
| 813 |
> |
duduz_i(3) = duduz_i(3) - pref*( ri2*zhat - d(3)*rcuti3 ) |
| 814 |
|
|
| 617 |
– |
dudx = dudx + pref * sw * ri3 * ( uz_i(1) - 3.0d0 * ct_i * xhat*sc2) |
| 618 |
– |
dudy = dudy + pref * sw * ri3 * ( uz_i(2) - 3.0d0 * ct_i * yhat*sc2) |
| 619 |
– |
dudz = dudz + pref * sw * ri3 * ( uz_i(3) - 3.0d0 * ct_i * zhat*sc2) |
| 620 |
– |
|
| 621 |
– |
duduz_i(1) = duduz_i(1) + pref * sw * ri2 * xhat * scale |
| 622 |
– |
duduz_i(2) = duduz_i(2) + pref * sw * ri2 * yhat * scale |
| 623 |
– |
duduz_i(3) = duduz_i(3) + pref * sw * ri2 * zhat * scale |
| 624 |
– |
endif |
| 625 |
– |
|
| 626 |
– |
if (j_is_Dipole) then |
| 627 |
– |
|
| 628 |
– |
if (i_is_SplitDipole) then |
| 629 |
– |
if (j_is_SplitDipole) then |
| 630 |
– |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i + 0.25_dp * d_j * d_j) |
| 631 |
– |
else |
| 632 |
– |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
| 633 |
– |
endif |
| 634 |
– |
ri = 1.0_dp / BigR |
| 635 |
– |
scale = rij * ri |
| 815 |
|
else |
| 816 |
< |
if (j_is_SplitDipole) then |
| 817 |
< |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
| 816 |
> |
if (i_is_SplitDipole) then |
| 817 |
> |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
| 818 |
|
ri = 1.0_dp / BigR |
| 819 |
< |
scale = rij * ri |
| 820 |
< |
else |
| 819 |
> |
scale = rij * ri |
| 820 |
> |
else |
| 821 |
|
ri = riji |
| 822 |
|
scale = 1.0_dp |
| 823 |
|
endif |
| 824 |
+ |
|
| 825 |
+ |
ri2 = ri * ri |
| 826 |
+ |
ri3 = ri2 * ri |
| 827 |
+ |
sc2 = scale * scale |
| 828 |
+ |
|
| 829 |
+ |
vterm = pref * ct_i * ri2 * scale |
| 830 |
+ |
vpair = vpair + swi * vterm |
| 831 |
+ |
epot = epot + vterm |
| 832 |
+ |
|
| 833 |
+ |
dudx = dudx + pref * ri3 * ( uz_i(1) - 3.0d0 * ct_i * xhat*sc2) |
| 834 |
+ |
dudy = dudy + pref * ri3 * ( uz_i(2) - 3.0d0 * ct_i * yhat*sc2) |
| 835 |
+ |
dudz = dudz + pref * ri3 * ( uz_i(3) - 3.0d0 * ct_i * zhat*sc2) |
| 836 |
+ |
|
| 837 |
+ |
duduz_i(1) = duduz_i(1) + pref * ri2 * xhat * scale |
| 838 |
+ |
duduz_i(2) = duduz_i(2) + pref * ri2 * yhat * scale |
| 839 |
+ |
duduz_i(3) = duduz_i(3) + pref * ri2 * zhat * scale |
| 840 |
|
endif |
| 841 |
+ |
endif |
| 842 |
|
|
| 843 |
< |
ct_ij = uz_i(1)*uz_j(1) + uz_i(2)*uz_j(2) + uz_i(3)*uz_j(3) |
| 843 |
> |
if (j_is_Dipole) then |
| 844 |
|
|
| 845 |
< |
ri2 = ri * ri |
| 650 |
< |
ri3 = ri2 * ri |
| 651 |
< |
ri4 = ri2 * ri2 |
| 652 |
< |
sc2 = scale * scale |
| 845 |
> |
pref = sw * pre22 * mu_i * mu_j |
| 846 |
|
|
| 847 |
< |
pref = pre22 * mu_i * mu_j |
| 848 |
< |
vterm = pref * ri3 * (ct_ij - 3.0d0 * ct_i * ct_j * sc2) |
| 849 |
< |
vpair = vpair + vterm |
| 850 |
< |
epot = epot + sw * vterm |
| 658 |
< |
|
| 659 |
< |
a1 = 5.0d0 * ct_i * ct_j * sc2 - ct_ij |
| 847 |
> |
if (corrMethod .eq. 1) then |
| 848 |
> |
ri2 = riji * riji |
| 849 |
> |
ri3 = ri2 * riji |
| 850 |
> |
ri4 = ri2 * ri2 |
| 851 |
|
|
| 852 |
< |
dudx=dudx+pref*sw*3.0d0*ri4*scale*(a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) |
| 853 |
< |
dudy=dudy+pref*sw*3.0d0*ri4*scale*(a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) |
| 854 |
< |
dudz=dudz+pref*sw*3.0d0*ri4*scale*(a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) |
| 855 |
< |
|
| 856 |
< |
duduz_i(1) = duduz_i(1) + pref*sw*ri3*(uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
| 857 |
< |
duduz_i(2) = duduz_i(2) + pref*sw*ri3*(uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
| 858 |
< |
duduz_i(3) = duduz_i(3) + pref*sw*ri3*(uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
| 859 |
< |
|
| 860 |
< |
duduz_j(1) = duduz_j(1) + pref*sw*ri3*(uz_i(1) - 3.0d0*ct_i*xhat*sc2) |
| 861 |
< |
duduz_j(2) = duduz_j(2) + pref*sw*ri3*(uz_i(2) - 3.0d0*ct_i*yhat*sc2) |
| 862 |
< |
duduz_j(3) = duduz_j(3) + pref*sw*ri3*(uz_i(3) - 3.0d0*ct_i*zhat*sc2) |
| 852 |
> |
vterm = pref * (ri3 - rcuti3) * (ct_ij - 3.0d0 * ct_i * ct_j) |
| 853 |
> |
vpair = vpair + swi * vterm |
| 854 |
> |
epot = epot + vterm |
| 855 |
> |
|
| 856 |
> |
a1 = 5.0d0 * ct_i * ct_j - ct_ij |
| 857 |
> |
|
| 858 |
> |
dudx = dudx + pref*3.0d0*ri4 & |
| 859 |
> |
*(a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) - & |
| 860 |
> |
pref*3.0d0*rcuti4*(a1*rcuti*d(1)-ct_i*uz_j(1)-ct_j*uz_i(1)) |
| 861 |
> |
dudy = dudy + pref*3.0d0*ri4 & |
| 862 |
> |
*(a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) - & |
| 863 |
> |
pref*3.0d0*rcuti4*(a1*rcuti*d(2)-ct_i*uz_j(2)-ct_j*uz_i(2)) |
| 864 |
> |
dudz = dudz + pref*3.0d0*ri4 & |
| 865 |
> |
*(a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) - & |
| 866 |
> |
pref*3.0d0*rcuti4*(a1*rcuti*d(3)-ct_i*uz_j(3)-ct_j*uz_i(3)) |
| 867 |
> |
|
| 868 |
> |
duduz_i(1) = duduz_i(1) + pref*(ri3*(uz_j(1) - 3.0d0*ct_j*xhat) & |
| 869 |
> |
- rcuti3*(uz_j(1) - 3.0d0*ct_j*d(1)*rcuti)) |
| 870 |
> |
duduz_i(2) = duduz_i(2) + pref*(ri3*(uz_j(2) - 3.0d0*ct_j*yhat) & |
| 871 |
> |
- rcuti3*(uz_j(2) - 3.0d0*ct_j*d(2)*rcuti)) |
| 872 |
> |
duduz_i(3) = duduz_i(3) + pref*(ri3*(uz_j(3) - 3.0d0*ct_j*zhat) & |
| 873 |
> |
- rcuti3*(uz_j(3) - 3.0d0*ct_j*d(3)*rcuti)) |
| 874 |
> |
duduz_j(1) = duduz_j(1) + pref*(ri3*(uz_i(1) - 3.0d0*ct_i*xhat) & |
| 875 |
> |
- rcuti3*(uz_i(1) - 3.0d0*ct_i*d(1)*rcuti)) |
| 876 |
> |
duduz_j(2) = duduz_j(2) + pref*(ri3*(uz_i(2) - 3.0d0*ct_i*yhat) & |
| 877 |
> |
- rcuti3*(uz_i(2) - 3.0d0*ct_i*d(2)*rcuti)) |
| 878 |
> |
duduz_j(3) = duduz_j(3) + pref*(ri3*(uz_i(3) - 3.0d0*ct_i*zhat) & |
| 879 |
> |
- rcuti3*(uz_i(3) - 3.0d0*ct_i*d(3)*rcuti)) |
| 880 |
> |
else |
| 881 |
> |
|
| 882 |
> |
if (i_is_SplitDipole) then |
| 883 |
> |
if (j_is_SplitDipole) then |
| 884 |
> |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i + 0.25_dp * d_j * d_j) |
| 885 |
> |
else |
| 886 |
> |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
| 887 |
> |
endif |
| 888 |
> |
ri = 1.0_dp / BigR |
| 889 |
> |
scale = rij * ri |
| 890 |
> |
else |
| 891 |
> |
if (j_is_SplitDipole) then |
| 892 |
> |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
| 893 |
> |
ri = 1.0_dp / BigR |
| 894 |
> |
scale = rij * ri |
| 895 |
> |
else |
| 896 |
> |
ri = riji |
| 897 |
> |
scale = 1.0_dp |
| 898 |
> |
endif |
| 899 |
> |
endif |
| 900 |
> |
|
| 901 |
> |
ct_ij = uz_i(1)*uz_j(1) + uz_i(2)*uz_j(2) + uz_i(3)*uz_j(3) |
| 902 |
> |
|
| 903 |
> |
ri2 = ri * ri |
| 904 |
> |
ri3 = ri2 * ri |
| 905 |
> |
ri4 = ri2 * ri2 |
| 906 |
> |
sc2 = scale * scale |
| 907 |
> |
|
| 908 |
> |
vterm = pref * ri3 * (ct_ij - 3.0d0 * ct_i * ct_j * sc2) |
| 909 |
> |
vpair = vpair + swi * vterm |
| 910 |
> |
epot = epot + vterm |
| 911 |
> |
|
| 912 |
> |
a1 = 5.0d0 * ct_i * ct_j * sc2 - ct_ij |
| 913 |
> |
|
| 914 |
> |
dudx = dudx + pref*3.0d0*ri4*scale & |
| 915 |
> |
*(a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) |
| 916 |
> |
dudy = dudy + pref*3.0d0*ri4*scale & |
| 917 |
> |
*(a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) |
| 918 |
> |
dudz = dudz + pref*3.0d0*ri4*scale & |
| 919 |
> |
*(a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) |
| 920 |
> |
|
| 921 |
> |
duduz_i(1) = duduz_i(1) + pref*ri3 & |
| 922 |
> |
*(uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
| 923 |
> |
duduz_i(2) = duduz_i(2) + pref*ri3 & |
| 924 |
> |
*(uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
| 925 |
> |
duduz_i(3) = duduz_i(3) + pref*ri3 & |
| 926 |
> |
*(uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
| 927 |
> |
|
| 928 |
> |
duduz_j(1) = duduz_j(1) + pref*ri3 & |
| 929 |
> |
*(uz_i(1) - 3.0d0*ct_i*xhat*sc2) |
| 930 |
> |
duduz_j(2) = duduz_j(2) + pref*ri3 & |
| 931 |
> |
*(uz_i(2) - 3.0d0*ct_i*yhat*sc2) |
| 932 |
> |
duduz_j(3) = duduz_j(3) + pref*ri3 & |
| 933 |
> |
*(uz_i(3) - 3.0d0*ct_i*zhat*sc2) |
| 934 |
> |
endif |
| 935 |
|
endif |
| 673 |
– |
|
| 936 |
|
endif |
| 937 |
|
|
| 938 |
|
if (i_is_Quadrupole) then |
| 939 |
|
if (j_is_Charge) then |
| 940 |
< |
|
| 940 |
> |
|
| 941 |
|
ri2 = riji * riji |
| 942 |
|
ri3 = ri2 * riji |
| 943 |
|
ri4 = ri2 * ri2 |
| 944 |
|
cx2 = cx_i * cx_i |
| 945 |
|
cy2 = cy_i * cy_i |
| 946 |
|
cz2 = cz_i * cz_i |
| 947 |
< |
|
| 948 |
< |
pref = pre14 * q_j / 1.0_dp |
| 949 |
< |
vterm = pref * ri3 * (qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
| 950 |
< |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
| 951 |
< |
qzz_i * (3.0_dp*cz2 - 1.0_dp)) |
| 952 |
< |
vpair = vpair + vterm |
| 953 |
< |
epot = epot + sw * vterm |
| 954 |
< |
|
| 955 |
< |
dudx = dudx - 5.0_dp*sw*vterm*riji*xhat + pref * sw * ri4 * ( & |
| 956 |
< |
qxx_i*(6.0_dp*cx_i*ux_i(1) - 2.0_dp*xhat) + & |
| 957 |
< |
qyy_i*(6.0_dp*cy_i*uy_i(1) - 2.0_dp*xhat) + & |
| 958 |
< |
qzz_i*(6.0_dp*cz_i*uz_i(1) - 2.0_dp*xhat) ) |
| 959 |
< |
dudy = dudy - 5.0_dp*sw*vterm*riji*yhat + pref * sw * ri4 * ( & |
| 960 |
< |
qxx_i*(6.0_dp*cx_i*ux_i(2) - 2.0_dp*yhat) + & |
| 961 |
< |
qyy_i*(6.0_dp*cy_i*uy_i(2) - 2.0_dp*yhat) + & |
| 962 |
< |
qzz_i*(6.0_dp*cz_i*uz_i(2) - 2.0_dp*yhat) ) |
| 963 |
< |
dudz = dudz - 5.0_dp*sw*vterm*riji*zhat + pref * sw * ri4 * ( & |
| 964 |
< |
qxx_i*(6.0_dp*cx_i*ux_i(3) - 2.0_dp*zhat) + & |
| 965 |
< |
qyy_i*(6.0_dp*cy_i*uy_i(3) - 2.0_dp*zhat) + & |
| 966 |
< |
qzz_i*(6.0_dp*cz_i*uz_i(3) - 2.0_dp*zhat) ) |
| 967 |
< |
|
| 968 |
< |
dudux_i(1) = dudux_i(1) + pref * sw * ri3 * (qxx_i*6.0_dp*cx_i*xhat) |
| 969 |
< |
dudux_i(2) = dudux_i(2) + pref * sw * ri3 * (qxx_i*6.0_dp*cx_i*yhat) |
| 970 |
< |
dudux_i(3) = dudux_i(3) + pref * sw * ri3 * (qxx_i*6.0_dp*cx_i*zhat) |
| 971 |
< |
|
| 972 |
< |
duduy_i(1) = duduy_i(1) + pref * sw * ri3 * (qyy_i*6.0_dp*cy_i*xhat) |
| 973 |
< |
duduy_i(2) = duduy_i(2) + pref * sw * ri3 * (qyy_i*6.0_dp*cy_i*yhat) |
| 974 |
< |
duduy_i(3) = duduy_i(3) + pref * sw * ri3 * (qyy_i*6.0_dp*cy_i*zhat) |
| 975 |
< |
|
| 976 |
< |
duduz_i(1) = duduz_i(1) + pref * sw * ri3 * (qzz_i*6.0_dp*cz_i*xhat) |
| 977 |
< |
duduz_i(2) = duduz_i(2) + pref * sw * ri3 * (qzz_i*6.0_dp*cz_i*yhat) |
| 978 |
< |
duduz_i(3) = duduz_i(3) + pref * sw * ri3 * (qzz_i*6.0_dp*cz_i*zhat) |
| 947 |
> |
|
| 948 |
> |
pref = sw * pre14 * q_j / 3.0_dp |
| 949 |
> |
|
| 950 |
> |
if (corrMethod .eq. 1) then |
| 951 |
> |
vterm1 = pref * ri3*( qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
| 952 |
> |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
| 953 |
> |
qzz_i * (3.0_dp*cz2 - 1.0_dp) ) |
| 954 |
> |
vterm2 = pref * rcuti3*( qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
| 955 |
> |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
| 956 |
> |
qzz_i * (3.0_dp*cz2 - 1.0_dp) ) |
| 957 |
> |
vpair = vpair + swi * ( vterm1 - vterm2 ) |
| 958 |
> |
epot = epot + ( vterm1 - vterm2 ) |
| 959 |
> |
|
| 960 |
> |
dudx = dudx - (5.0_dp*(vterm1*riji*xhat - vterm2*rcuti2*d(1))) + & |
| 961 |
> |
pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(1)) - & |
| 962 |
> |
qxx_i*2.0_dp*(xhat - rcuti*d(1))) + & |
| 963 |
> |
(ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(1)) - & |
| 964 |
> |
qyy_i*2.0_dp*(xhat - rcuti*d(1))) + & |
| 965 |
> |
(ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(1)) - & |
| 966 |
> |
qzz_i*2.0_dp*(xhat - rcuti*d(1))) ) |
| 967 |
> |
dudy = dudy - (5.0_dp*(vterm1*riji*yhat - vterm2*rcuti2*d(2))) + & |
| 968 |
> |
pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(2)) - & |
| 969 |
> |
qxx_i*2.0_dp*(yhat - rcuti*d(2))) + & |
| 970 |
> |
(ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(2)) - & |
| 971 |
> |
qyy_i*2.0_dp*(yhat - rcuti*d(2))) + & |
| 972 |
> |
(ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(2)) - & |
| 973 |
> |
qzz_i*2.0_dp*(yhat - rcuti*d(2))) ) |
| 974 |
> |
dudz = dudz - (5.0_dp*(vterm1*riji*zhat - vterm2*rcuti2*d(3))) + & |
| 975 |
> |
pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(3)) - & |
| 976 |
> |
qxx_i*2.0_dp*(zhat - rcuti*d(3))) + & |
| 977 |
> |
(ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(3)) - & |
| 978 |
> |
qyy_i*2.0_dp*(zhat - rcuti*d(3))) + & |
| 979 |
> |
(ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(3)) - & |
| 980 |
> |
qzz_i*2.0_dp*(zhat - rcuti*d(3))) ) |
| 981 |
> |
|
| 982 |
> |
dudux_i(1) = dudux_i(1) + pref * (ri3*(qxx_i*6.0_dp*cx_i*xhat) - & |
| 983 |
> |
rcuti4*(qxx_i*6.0_dp*cx_i*d(1))) |
| 984 |
> |
dudux_i(2) = dudux_i(2) + pref * (ri3*(qxx_i*6.0_dp*cx_i*yhat) - & |
| 985 |
> |
rcuti4*(qxx_i*6.0_dp*cx_i*d(2))) |
| 986 |
> |
dudux_i(3) = dudux_i(3) + pref * (ri3*(qxx_i*6.0_dp*cx_i*zhat) - & |
| 987 |
> |
rcuti4*(qxx_i*6.0_dp*cx_i*d(3))) |
| 988 |
> |
|
| 989 |
> |
duduy_i(1) = duduy_i(1) + pref * (ri3*(qyy_i*6.0_dp*cy_i*xhat) - & |
| 990 |
> |
rcuti4*(qyy_i*6.0_dp*cx_i*d(1))) |
| 991 |
> |
duduy_i(2) = duduy_i(2) + pref * (ri3*(qyy_i*6.0_dp*cy_i*yhat) - & |
| 992 |
> |
rcuti4*(qyy_i*6.0_dp*cx_i*d(2))) |
| 993 |
> |
duduy_i(3) = duduy_i(3) + pref * (ri3*(qyy_i*6.0_dp*cy_i*zhat) - & |
| 994 |
> |
rcuti4*(qyy_i*6.0_dp*cx_i*d(3))) |
| 995 |
> |
|
| 996 |
> |
duduz_i(1) = duduz_i(1) + pref * (ri3*(qzz_i*6.0_dp*cz_i*xhat) - & |
| 997 |
> |
rcuti4*(qzz_i*6.0_dp*cx_i*d(1))) |
| 998 |
> |
duduz_i(2) = duduz_i(2) + pref * (ri3*(qzz_i*6.0_dp*cz_i*yhat) - & |
| 999 |
> |
rcuti4*(qzz_i*6.0_dp*cx_i*d(2))) |
| 1000 |
> |
duduz_i(3) = duduz_i(3) + pref * (ri3*(qzz_i*6.0_dp*cz_i*zhat) - & |
| 1001 |
> |
rcuti4*(qzz_i*6.0_dp*cx_i*d(3))) |
| 1002 |
> |
|
| 1003 |
> |
else |
| 1004 |
> |
vterm = pref * ri3 * (qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
| 1005 |
> |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
| 1006 |
> |
qzz_i * (3.0_dp*cz2 - 1.0_dp)) |
| 1007 |
> |
vpair = vpair + swi * vterm |
| 1008 |
> |
epot = epot + vterm |
| 1009 |
> |
|
| 1010 |
> |
dudx = dudx - 5.0_dp*vterm*riji*xhat + pref * ri4 * ( & |
| 1011 |
> |
qxx_i*(6.0_dp*cx_i*ux_i(1) - 2.0_dp*xhat) + & |
| 1012 |
> |
qyy_i*(6.0_dp*cy_i*uy_i(1) - 2.0_dp*xhat) + & |
| 1013 |
> |
qzz_i*(6.0_dp*cz_i*uz_i(1) - 2.0_dp*xhat) ) |
| 1014 |
> |
dudy = dudy - 5.0_dp*vterm*riji*yhat + pref * ri4 * ( & |
| 1015 |
> |
qxx_i*(6.0_dp*cx_i*ux_i(2) - 2.0_dp*yhat) + & |
| 1016 |
> |
qyy_i*(6.0_dp*cy_i*uy_i(2) - 2.0_dp*yhat) + & |
| 1017 |
> |
qzz_i*(6.0_dp*cz_i*uz_i(2) - 2.0_dp*yhat) ) |
| 1018 |
> |
dudz = dudz - 5.0_dp*vterm*riji*zhat + pref * ri4 * ( & |
| 1019 |
> |
qxx_i*(6.0_dp*cx_i*ux_i(3) - 2.0_dp*zhat) + & |
| 1020 |
> |
qyy_i*(6.0_dp*cy_i*uy_i(3) - 2.0_dp*zhat) + & |
| 1021 |
> |
qzz_i*(6.0_dp*cz_i*uz_i(3) - 2.0_dp*zhat) ) |
| 1022 |
> |
|
| 1023 |
> |
dudux_i(1) = dudux_i(1) + pref * ri3*(qxx_i*6.0_dp*cx_i*xhat) |
| 1024 |
> |
dudux_i(2) = dudux_i(2) + pref * ri3*(qxx_i*6.0_dp*cx_i*yhat) |
| 1025 |
> |
dudux_i(3) = dudux_i(3) + pref * ri3*(qxx_i*6.0_dp*cx_i*zhat) |
| 1026 |
> |
|
| 1027 |
> |
duduy_i(1) = duduy_i(1) + pref * ri3*(qyy_i*6.0_dp*cy_i*xhat) |
| 1028 |
> |
duduy_i(2) = duduy_i(2) + pref * ri3*(qyy_i*6.0_dp*cy_i*yhat) |
| 1029 |
> |
duduy_i(3) = duduy_i(3) + pref * ri3*(qyy_i*6.0_dp*cy_i*zhat) |
| 1030 |
> |
|
| 1031 |
> |
duduz_i(1) = duduz_i(1) + pref * ri3*(qzz_i*6.0_dp*cz_i*xhat) |
| 1032 |
> |
duduz_i(2) = duduz_i(2) + pref * ri3*(qzz_i*6.0_dp*cz_i*yhat) |
| 1033 |
> |
duduz_i(3) = duduz_i(3) + pref * ri3*(qzz_i*6.0_dp*cz_i*zhat) |
| 1034 |
> |
endif |
| 1035 |
|
endif |
| 1036 |
|
endif |
| 1037 |
< |
|
| 1038 |
< |
|
| 1037 |
> |
|
| 1038 |
> |
|
| 1039 |
|
if (do_pot) then |
| 1040 |
|
#ifdef IS_MPI |
| 1041 |
|
pot_row(atom1) = pot_row(atom1) + 0.5d0*epot |
| 1044 |
|
pot = pot + epot |
| 1045 |
|
#endif |
| 1046 |
|
endif |
| 1047 |
< |
|
| 1047 |
> |
|
| 1048 |
|
#ifdef IS_MPI |
| 1049 |
|
f_Row(1,atom1) = f_Row(1,atom1) + dudx |
| 1050 |
|
f_Row(2,atom1) = f_Row(2,atom1) + dudy |
| 1051 |
|
f_Row(3,atom1) = f_Row(3,atom1) + dudz |
| 1052 |
< |
|
| 1052 |
> |
|
| 1053 |
|
f_Col(1,atom2) = f_Col(1,atom2) - dudx |
| 1054 |
|
f_Col(2,atom2) = f_Col(2,atom2) - dudy |
| 1055 |
|
f_Col(3,atom2) = f_Col(3,atom2) - dudz |
| 1056 |
< |
|
| 1056 |
> |
|
| 1057 |
|
if (i_is_Dipole .or. i_is_Quadrupole) then |
| 1058 |
|
t_Row(1,atom1)=t_Row(1,atom1) - uz_i(2)*duduz_i(3) + uz_i(3)*duduz_i(2) |
| 1059 |
|
t_Row(2,atom1)=t_Row(2,atom1) - uz_i(3)*duduz_i(1) + uz_i(1)*duduz_i(3) |
| 1088 |
|
f(1,atom1) = f(1,atom1) + dudx |
| 1089 |
|
f(2,atom1) = f(2,atom1) + dudy |
| 1090 |
|
f(3,atom1) = f(3,atom1) + dudz |
| 1091 |
< |
|
| 1091 |
> |
|
| 1092 |
|
f(1,atom2) = f(1,atom2) - dudx |
| 1093 |
|
f(2,atom2) = f(2,atom2) - dudy |
| 1094 |
|
f(3,atom2) = f(3,atom2) - dudz |
| 1095 |
< |
|
| 1095 |
> |
|
| 1096 |
|
if (i_is_Dipole .or. i_is_Quadrupole) then |
| 1097 |
|
t(1,atom1)=t(1,atom1) - uz_i(2)*duduz_i(3) + uz_i(3)*duduz_i(2) |
| 1098 |
|
t(2,atom1)=t(2,atom1) - uz_i(3)*duduz_i(1) + uz_i(1)*duduz_i(3) |
| 1124 |
|
endif |
| 1125 |
|
|
| 1126 |
|
#endif |
| 1127 |
< |
|
| 1127 |
> |
|
| 1128 |
|
#ifdef IS_MPI |
| 1129 |
|
id1 = AtomRowToGlobal(atom1) |
| 1130 |
|
id2 = AtomColToGlobal(atom2) |
| 1134 |
|
#endif |
| 1135 |
|
|
| 1136 |
|
if (molMembershipList(id1) .ne. molMembershipList(id2)) then |
| 1137 |
< |
|
| 1137 |
> |
|
| 1138 |
|
fpair(1) = fpair(1) + dudx |
| 1139 |
|
fpair(2) = fpair(2) + dudy |
| 1140 |
|
fpair(3) = fpair(3) + dudz |
| 1143 |
|
|
| 1144 |
|
return |
| 1145 |
|
end subroutine doElectrostaticPair |
| 1146 |
< |
|
| 1146 |
> |
|
| 1147 |
> |
!! calculates the switching functions and their derivatives for a given |
| 1148 |
> |
subroutine calc_switch(r, mu, scale, dscale) |
| 1149 |
> |
|
| 1150 |
> |
real (kind=dp), intent(in) :: r, mu |
| 1151 |
> |
real (kind=dp), intent(inout) :: scale, dscale |
| 1152 |
> |
real (kind=dp) :: rl, ru, mulow, minRatio, temp, scaleVal |
| 1153 |
> |
|
| 1154 |
> |
! distances must be in angstroms |
| 1155 |
> |
rl = 2.75d0 |
| 1156 |
> |
ru = 3.75d0 |
| 1157 |
> |
mulow = 0.0d0 !3.3856d0 ! 1.84 * 1.84 |
| 1158 |
> |
minRatio = mulow / (mu*mu) |
| 1159 |
> |
scaleVal = 1.0d0 - minRatio |
| 1160 |
> |
|
| 1161 |
> |
if (r.lt.rl) then |
| 1162 |
> |
scale = minRatio |
| 1163 |
> |
dscale = 0.0d0 |
| 1164 |
> |
elseif (r.gt.ru) then |
| 1165 |
> |
scale = 1.0d0 |
| 1166 |
> |
dscale = 0.0d0 |
| 1167 |
> |
else |
| 1168 |
> |
scale = 1.0d0 - scaleVal*((ru + 2.0d0*r - 3.0d0*rl) * (ru-r)**2) & |
| 1169 |
> |
/ ((ru - rl)**3) |
| 1170 |
> |
dscale = -scaleVal * 6.0d0 * (r-ru)*(r-rl)/((ru - rl)**3) |
| 1171 |
> |
endif |
| 1172 |
> |
|
| 1173 |
> |
return |
| 1174 |
> |
end subroutine calc_switch |
| 1175 |
> |
|
| 1176 |
> |
subroutine destroyElectrostaticTypes() |
| 1177 |
> |
|
| 1178 |
> |
if(allocated(ElectrostaticMap)) deallocate(ElectrostaticMap) |
| 1179 |
> |
|
| 1180 |
> |
end subroutine destroyElectrostaticTypes |
| 1181 |
> |
|
| 1182 |
|
end module electrostatic_module |
