40 |
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!! |
41 |
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42 |
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module electrostatic_module |
43 |
< |
|
43 |
> |
|
44 |
|
use force_globals |
45 |
|
use definitions |
46 |
|
use atype_module |
54 |
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|
55 |
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PRIVATE |
56 |
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|
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 |
+ |
logical, save :: summationMethodChecked = .false. |
77 |
+ |
real(kind=DP), save :: defaultCutoff = 0.0_DP |
78 |
+ |
logical, save :: haveDefaultCutoff = .false. |
79 |
+ |
real(kind=DP), save :: dampingAlpha = 0.0_DP |
80 |
+ |
logical, save :: haveDampingAlpha = .false. |
81 |
+ |
real(kind=DP), save :: dielectric = 0.0_DP |
82 |
+ |
logical, save :: haveDielectric = .false. |
83 |
+ |
real(kind=DP), save :: constERFC = 0.0_DP |
84 |
+ |
real(kind=DP), save :: constEXP = 0.0_DP |
85 |
+ |
logical, save :: haveDWAconstants = .false. |
86 |
+ |
real(kind=dp), save :: rcuti = 0.0_dp |
87 |
+ |
real(kind=dp), save :: rcuti2 = 0.0_dp |
88 |
+ |
real(kind=dp), save :: rcuti3 = 0.0_dp |
89 |
+ |
real(kind=dp), save :: rcuti4 = 0.0_dp |
90 |
+ |
|
91 |
+ |
|
92 |
+ |
public :: setElectrostaticSummationMethod |
93 |
+ |
public :: setElectrostaticCutoffRadius |
94 |
+ |
public :: setDampedWolfAlpha |
95 |
+ |
public :: setReactionFieldDielectric |
96 |
|
public :: newElectrostaticType |
97 |
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public :: setCharge |
98 |
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public :: setDipoleMoment |
102 |
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public :: getCharge |
103 |
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public :: getDipoleMoment |
104 |
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public :: pre22 |
105 |
+ |
public :: destroyElectrostaticTypes |
106 |
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|
107 |
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type :: Electrostatic |
108 |
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integer :: c_ident |
110 |
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logical :: is_Dipole = .false. |
111 |
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logical :: is_SplitDipole = .false. |
112 |
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logical :: is_Quadrupole = .false. |
113 |
+ |
logical :: is_Tap = .false. |
114 |
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real(kind=DP) :: charge = 0.0_DP |
115 |
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real(kind=DP) :: dipole_moment = 0.0_DP |
116 |
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real(kind=DP) :: split_dipole_distance = 0.0_DP |
120 |
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type(Electrostatic), dimension(:), allocatable :: ElectrostaticMap |
121 |
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|
122 |
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contains |
123 |
+ |
|
124 |
+ |
subroutine setElectrostaticSummationMethod(the_ESM) |
125 |
+ |
integer, intent(in) :: the_ESM |
126 |
+ |
|
127 |
+ |
if ((the_ESM .le. 0) .or. (the_ESM .gt. REACTION_FIELD)) then |
128 |
+ |
call handleError("setElectrostaticSummationMethod", "Unsupported Summation Method") |
129 |
+ |
endif |
130 |
+ |
|
131 |
+ |
summationMethod = the_ESM |
132 |
+ |
end subroutine setElectrostaticSummationMethod |
133 |
+ |
|
134 |
+ |
subroutine setElectrostaticCutoffRadius(thisRcut) |
135 |
+ |
real(kind=dp), intent(in) :: thisRcut |
136 |
+ |
defaultCutoff = thisRcut |
137 |
+ |
haveDefaultCutoff = .true. |
138 |
+ |
end subroutine setElectrostaticCutoffRadius |
139 |
+ |
|
140 |
+ |
subroutine setDampedWolfAlpha(thisAlpha) |
141 |
+ |
real(kind=dp), intent(in) :: thisAlpha |
142 |
+ |
dampingAlpha = thisAlpha |
143 |
+ |
haveDampingAlpha = .true. |
144 |
+ |
end subroutine setDampedWolfAlpha |
145 |
+ |
|
146 |
+ |
subroutine setReactionFieldDielectric(thisDielectric) |
147 |
+ |
real(kind=dp), intent(in) :: thisDielectric |
148 |
+ |
dielectric = thisDielectric |
149 |
+ |
haveDielectric = .true. |
150 |
+ |
end subroutine setReactionFieldDielectric |
151 |
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|
152 |
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subroutine newElectrostaticType(c_ident, is_Charge, is_Dipole, & |
153 |
< |
is_SplitDipole, is_Quadrupole, status) |
154 |
< |
|
153 |
> |
is_SplitDipole, is_Quadrupole, is_Tap, status) |
154 |
> |
|
155 |
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integer, intent(in) :: c_ident |
156 |
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logical, intent(in) :: is_Charge |
157 |
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logical, intent(in) :: is_Dipole |
158 |
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logical, intent(in) :: is_SplitDipole |
159 |
|
logical, intent(in) :: is_Quadrupole |
160 |
+ |
logical, intent(in) :: is_Tap |
161 |
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integer, intent(out) :: status |
162 |
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integer :: nAtypes, myATID, i, j |
163 |
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|
164 |
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status = 0 |
165 |
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myATID = getFirstMatchingElement(atypes, "c_ident", c_ident) |
166 |
< |
|
166 |
> |
|
167 |
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!! Be simple-minded and assume that we need an ElectrostaticMap that |
168 |
|
!! is the same size as the total number of atom types |
169 |
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|
170 |
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if (.not.allocated(ElectrostaticMap)) then |
171 |
< |
|
171 |
> |
|
172 |
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nAtypes = getSize(atypes) |
173 |
< |
|
173 |
> |
|
174 |
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if (nAtypes == 0) then |
175 |
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status = -1 |
176 |
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return |
177 |
|
end if |
178 |
< |
|
178 |
> |
|
179 |
|
if (.not. allocated(ElectrostaticMap)) then |
180 |
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allocate(ElectrostaticMap(nAtypes)) |
181 |
|
endif |
182 |
< |
|
182 |
> |
|
183 |
|
end if |
184 |
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|
185 |
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if (myATID .gt. size(ElectrostaticMap)) then |
186 |
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status = -1 |
187 |
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return |
188 |
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endif |
189 |
< |
|
189 |
> |
|
190 |
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! set the values for ElectrostaticMap for this atom type: |
191 |
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|
192 |
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ElectrostaticMap(myATID)%c_ident = c_ident |
194 |
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ElectrostaticMap(myATID)%is_Dipole = is_Dipole |
195 |
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ElectrostaticMap(myATID)%is_SplitDipole = is_SplitDipole |
196 |
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ElectrostaticMap(myATID)%is_Quadrupole = is_Quadrupole |
197 |
< |
|
197 |
> |
ElectrostaticMap(myATID)%is_Tap = is_Tap |
198 |
> |
|
199 |
|
end subroutine newElectrostaticType |
200 |
|
|
201 |
|
subroutine setCharge(c_ident, charge, status) |
223 |
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call handleError("electrostatic", "Attempt to setCharge of an atom type that is not a charge!") |
224 |
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status = -1 |
225 |
|
return |
226 |
< |
endif |
226 |
> |
endif |
227 |
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|
228 |
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ElectrostaticMap(myATID)%charge = charge |
229 |
|
end subroutine setCharge |
314 |
|
status = -1 |
315 |
|
return |
316 |
|
endif |
317 |
< |
|
317 |
> |
|
318 |
|
do i = 1, 3 |
319 |
< |
ElectrostaticMap(myATID)%quadrupole_moments(i) = & |
320 |
< |
quadrupole_moments(i) |
321 |
< |
enddo |
319 |
> |
ElectrostaticMap(myATID)%quadrupole_moments(i) = & |
320 |
> |
quadrupole_moments(i) |
321 |
> |
enddo |
322 |
|
|
323 |
|
end subroutine setQuadrupoleMoments |
324 |
|
|
325 |
< |
|
325 |
> |
|
326 |
|
function getCharge(atid) result (c) |
327 |
|
integer, intent(in) :: atid |
328 |
|
integer :: localError |
329 |
|
real(kind=dp) :: c |
330 |
< |
|
330 |
> |
|
331 |
|
if (.not.allocated(ElectrostaticMap)) then |
332 |
|
call handleError("electrostatic", "no ElectrostaticMap was present before first call of getCharge!") |
333 |
|
return |
334 |
|
end if |
335 |
< |
|
335 |
> |
|
336 |
|
if (.not.ElectrostaticMap(atid)%is_Charge) then |
337 |
|
call handleError("electrostatic", "getCharge was called for an atom type that isn't a charge!") |
338 |
|
return |
339 |
|
endif |
340 |
< |
|
340 |
> |
|
341 |
|
c = ElectrostaticMap(atid)%charge |
342 |
|
end function getCharge |
343 |
|
|
345 |
|
integer, intent(in) :: atid |
346 |
|
integer :: localError |
347 |
|
real(kind=dp) :: dm |
348 |
< |
|
348 |
> |
|
349 |
|
if (.not.allocated(ElectrostaticMap)) then |
350 |
|
call handleError("electrostatic", "no ElectrostaticMap was present before first call of getDipoleMoment!") |
351 |
|
return |
352 |
|
end if |
353 |
< |
|
353 |
> |
|
354 |
|
if (.not.ElectrostaticMap(atid)%is_Dipole) then |
355 |
|
call handleError("electrostatic", "getDipoleMoment was called for an atom type that isn't a dipole!") |
356 |
|
return |
357 |
|
endif |
358 |
< |
|
358 |
> |
|
359 |
|
dm = ElectrostaticMap(atid)%dipole_moment |
360 |
|
end function getDipoleMoment |
361 |
|
|
362 |
+ |
subroutine checkSummationMethod() |
363 |
+ |
|
364 |
+ |
if (.not.haveDefaultCutoff) then |
365 |
+ |
call handleError("checkSummationMethod", "no Default Cutoff set!") |
366 |
+ |
endif |
367 |
+ |
|
368 |
+ |
rcuti = 1.0d0 / defaultCutoff |
369 |
+ |
rcuti2 = rcuti*rcuti |
370 |
+ |
rcuti3 = rcuti2*rcuti |
371 |
+ |
rcuti4 = rcuti2*rcuti2 |
372 |
+ |
|
373 |
+ |
if (summationMethod .eq. DAMPED_WOLF) then |
374 |
+ |
if (.not.haveDWAconstants) then |
375 |
+ |
|
376 |
+ |
if (.not.haveDampingAlpha) then |
377 |
+ |
call handleError("checkSummationMethod", "no Damping Alpha set!") |
378 |
+ |
endif |
379 |
+ |
|
380 |
+ |
if (.not.haveDefaultCutoff) then |
381 |
+ |
call handleError("checkSummationMethod", "no Default Cutoff set!") |
382 |
+ |
endif |
383 |
+ |
|
384 |
+ |
constEXP = exp(-dampingAlpha*dampingAlpha*defaultCutoff*defaultCutoff) |
385 |
+ |
constERFC = erfc(dampingAlpha*defaultCutoff) |
386 |
+ |
|
387 |
+ |
haveDWAconstants = .true. |
388 |
+ |
endif |
389 |
+ |
endif |
390 |
+ |
|
391 |
+ |
if (summationMethod .eq. REACTION_FIELD) then |
392 |
+ |
if (.not.haveDielectric) then |
393 |
+ |
call handleError("checkSummationMethod", "no reaction field Dielectric set!") |
394 |
+ |
endif |
395 |
+ |
endif |
396 |
+ |
|
397 |
+ |
summationMethodChecked = .true. |
398 |
+ |
end subroutine checkSummationMethod |
399 |
+ |
|
400 |
+ |
|
401 |
+ |
|
402 |
|
subroutine doElectrostaticPair(atom1, atom2, d, rij, r2, sw, & |
403 |
|
vpair, fpair, pot, eFrame, f, t, do_pot) |
404 |
< |
|
404 |
> |
|
405 |
|
logical, intent(in) :: do_pot |
406 |
< |
|
406 |
> |
|
407 |
|
integer, intent(in) :: atom1, atom2 |
408 |
|
integer :: localError |
409 |
|
|
412 |
|
real(kind=dp), intent(inout) :: vpair |
413 |
|
real(kind=dp), intent(inout), dimension(3) :: fpair |
414 |
|
|
415 |
< |
real( kind = dp ) :: pot |
415 |
> |
real( kind = dp ) :: pot, swi |
416 |
|
real( kind = dp ), dimension(9,nLocal) :: eFrame |
417 |
|
real( kind = dp ), dimension(3,nLocal) :: f |
418 |
|
real( kind = dp ), dimension(3,nLocal) :: t |
419 |
< |
|
419 |
> |
|
420 |
|
real (kind = dp), dimension(3) :: ux_i, uy_i, uz_i |
421 |
|
real (kind = dp), dimension(3) :: ux_j, uy_j, uz_j |
422 |
|
real (kind = dp), dimension(3) :: dudux_i, duduy_i, duduz_i |
424 |
|
|
425 |
|
logical :: i_is_Charge, i_is_Dipole, i_is_SplitDipole, i_is_Quadrupole |
426 |
|
logical :: j_is_Charge, j_is_Dipole, j_is_SplitDipole, j_is_Quadrupole |
427 |
+ |
logical :: i_is_Tap, j_is_Tap |
428 |
|
integer :: me1, me2, id1, id2 |
429 |
|
real (kind=dp) :: q_i, q_j, mu_i, mu_j, d_i, d_j |
430 |
|
real (kind=dp) :: qxx_i, qyy_i, qzz_i |
434 |
|
real (kind=dp) :: cx2, cy2, cz2 |
435 |
|
real (kind=dp) :: ct_i, ct_j, ct_ij, a1 |
436 |
|
real (kind=dp) :: riji, ri, ri2, ri3, ri4 |
437 |
< |
real (kind=dp) :: pref, vterm, epot, dudr |
437 |
> |
real (kind=dp) :: pref, vterm, epot, dudr, vterm1, vterm2 |
438 |
|
real (kind=dp) :: xhat, yhat, zhat |
439 |
|
real (kind=dp) :: dudx, dudy, dudz |
440 |
< |
real (kind=dp) :: drdxj, drdyj, drdzj |
343 |
< |
real (kind=dp) :: scale, sc2, bigR |
440 |
> |
real (kind=dp) :: scale, sc2, bigR, switcher, dswitcher |
441 |
|
|
442 |
|
if (.not.allocated(ElectrostaticMap)) then |
443 |
|
call handleError("electrostatic", "no ElectrostaticMap was present before first call of do_electrostatic_pair!") |
444 |
|
return |
445 |
|
end if |
446 |
|
|
447 |
+ |
if (.not.summationMethodChecked) then |
448 |
+ |
call checkSummationMethod() |
449 |
+ |
|
450 |
+ |
endif |
451 |
+ |
|
452 |
+ |
|
453 |
|
#ifdef IS_MPI |
454 |
|
me1 = atid_Row(atom1) |
455 |
|
me2 = atid_Col(atom2) |
466 |
|
yhat = d(2) * riji |
467 |
|
zhat = d(3) * riji |
468 |
|
|
469 |
< |
drdxj = xhat |
367 |
< |
drdyj = yhat |
368 |
< |
drdzj = zhat |
469 |
> |
swi = 1.0d0 / sw |
470 |
|
|
471 |
|
!! logicals |
371 |
– |
|
472 |
|
i_is_Charge = ElectrostaticMap(me1)%is_Charge |
473 |
|
i_is_Dipole = ElectrostaticMap(me1)%is_Dipole |
474 |
|
i_is_SplitDipole = ElectrostaticMap(me1)%is_SplitDipole |
475 |
|
i_is_Quadrupole = ElectrostaticMap(me1)%is_Quadrupole |
476 |
+ |
i_is_Tap = ElectrostaticMap(me1)%is_Tap |
477 |
|
|
478 |
|
j_is_Charge = ElectrostaticMap(me2)%is_Charge |
479 |
|
j_is_Dipole = ElectrostaticMap(me2)%is_Dipole |
480 |
|
j_is_SplitDipole = ElectrostaticMap(me2)%is_SplitDipole |
481 |
|
j_is_Quadrupole = ElectrostaticMap(me2)%is_Quadrupole |
482 |
+ |
j_is_Tap = ElectrostaticMap(me2)%is_Tap |
483 |
|
|
484 |
|
if (i_is_Charge) then |
485 |
|
q_i = ElectrostaticMap(me1)%charge |
486 |
|
endif |
487 |
< |
|
487 |
> |
|
488 |
|
if (i_is_Dipole) then |
489 |
|
mu_i = ElectrostaticMap(me1)%dipole_moment |
490 |
|
#ifdef IS_MPI |
501 |
|
if (i_is_SplitDipole) then |
502 |
|
d_i = ElectrostaticMap(me1)%split_dipole_distance |
503 |
|
endif |
504 |
< |
|
504 |
> |
|
505 |
|
endif |
506 |
|
|
507 |
|
if (i_is_Quadrupole) then |
534 |
|
cz_i = uz_i(1)*xhat + uz_i(2)*yhat + uz_i(3)*zhat |
535 |
|
endif |
536 |
|
|
435 |
– |
|
537 |
|
if (j_is_Charge) then |
538 |
|
q_j = ElectrostaticMap(me2)%charge |
539 |
|
endif |
540 |
< |
|
540 |
> |
|
541 |
|
if (j_is_Dipole) then |
542 |
|
mu_j = ElectrostaticMap(me2)%dipole_moment |
543 |
|
#ifdef IS_MPI |
549 |
|
uz_j(2) = eFrame(6,atom2) |
550 |
|
uz_j(3) = eFrame(9,atom2) |
551 |
|
#endif |
552 |
< |
ct_j = uz_j(1)*drdxj + uz_j(2)*drdyj + uz_j(3)*drdzj |
552 |
> |
ct_j = uz_j(1)*xhat + uz_j(2)*yhat + uz_j(3)*zhat |
553 |
|
|
554 |
|
if (j_is_SplitDipole) then |
555 |
|
d_j = ElectrostaticMap(me2)%split_dipole_distance |
585 |
|
cy_j = uy_j(1)*xhat + uy_j(2)*yhat + uy_j(3)*zhat |
586 |
|
cz_j = uz_j(1)*xhat + uz_j(2)*yhat + uz_j(3)*zhat |
587 |
|
endif |
588 |
+ |
|
589 |
+ |
!!$ switcher = 1.0d0 |
590 |
+ |
!!$ dswitcher = 0.0d0 |
591 |
+ |
!!$ ebalance = 0.0d0 |
592 |
+ |
!!$ ! weaken the dipole interaction at close range for TAP water |
593 |
+ |
!!$ if (j_is_Tap .and. i_is_Tap) then |
594 |
+ |
!!$ call calc_switch(rij, mu_i, switcher, dswitcher) |
595 |
+ |
!!$ endif |
596 |
|
|
597 |
|
epot = 0.0_dp |
598 |
|
dudx = 0.0_dp |
610 |
|
if (i_is_Charge) then |
611 |
|
|
612 |
|
if (j_is_Charge) then |
504 |
– |
|
505 |
– |
vterm = pre11 * q_i * q_j * riji |
506 |
– |
vpair = vpair + vterm |
507 |
– |
epot = epot + sw*vterm |
613 |
|
|
614 |
< |
dudr = - sw * vterm * riji |
614 |
> |
if (summationMethod .eq. UNDAMPED_WOLF) then |
615 |
> |
vterm = pre11 * q_i * q_j * (riji - rcuti) |
616 |
|
|
617 |
< |
dudx = dudx + dudr * drdxj |
618 |
< |
dudy = dudy + dudr * drdyj |
619 |
< |
dudz = dudz + dudr * drdzj |
620 |
< |
|
617 |
> |
vpair = vpair + vterm |
618 |
> |
epot = epot + sw * vterm |
619 |
> |
|
620 |
> |
dudr = - sw * pre11 * q_i * q_j * (riji*riji*riji - rcuti2*rcuti) |
621 |
> |
|
622 |
> |
dudx = dudx + dudr * d(1) |
623 |
> |
dudy = dudy + dudr * d(2) |
624 |
> |
dudz = dudz + dudr * d(3) |
625 |
> |
|
626 |
> |
else |
627 |
> |
vterm = pre11 * q_i * q_j * riji |
628 |
> |
|
629 |
> |
vpair = vpair + vterm |
630 |
> |
epot = epot + sw * vterm |
631 |
> |
|
632 |
> |
dudr = - sw * vterm * riji |
633 |
> |
|
634 |
> |
dudx = dudx + dudr * xhat |
635 |
> |
dudy = dudy + dudr * yhat |
636 |
> |
dudz = dudz + dudr * zhat |
637 |
> |
|
638 |
> |
endif |
639 |
> |
|
640 |
|
endif |
641 |
|
|
642 |
|
if (j_is_Dipole) then |
643 |
|
|
644 |
< |
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 |
644 |
> |
pref = sw * pre12 * q_i * mu_j |
645 |
|
|
646 |
< |
ri2 = ri * ri |
647 |
< |
ri3 = ri2 * ri |
648 |
< |
sc2 = scale * scale |
646 |
> |
if (summationMethod .eq. UNDAMPED_WOLF) then |
647 |
> |
ri2 = riji * riji |
648 |
> |
ri3 = ri2 * riji |
649 |
> |
|
650 |
> |
vterm = - pref * ct_j * (ri2 - rcuti2) |
651 |
> |
vpair = vpair + swi*vterm |
652 |
> |
epot = epot + vterm |
653 |
|
|
654 |
< |
pref = pre12 * q_i * mu_j |
655 |
< |
vterm = - pref * ct_j * ri2 * scale |
656 |
< |
vpair = vpair + vterm |
657 |
< |
epot = epot + sw * vterm |
654 |
> |
!! this has a + sign in the () because the rij vector is |
655 |
> |
!! r_j - r_i and the charge-dipole potential takes the origin |
656 |
> |
!! as the point dipole, which is atom j in this case. |
657 |
> |
|
658 |
> |
dudx = dudx - pref * ( ri3*( uz_j(1) - 3.0d0*ct_j*xhat) & |
659 |
> |
- rcuti3*( uz_j(1) - 3.0d0*ct_j*d(1)*rcuti ) ) |
660 |
> |
dudy = dudy - pref * ( ri3*( uz_j(2) - 3.0d0*ct_j*yhat) & |
661 |
> |
- rcuti3*( uz_j(2) - 3.0d0*ct_j*d(2)*rcuti ) ) |
662 |
> |
dudz = dudz - pref * ( ri3*( uz_j(3) - 3.0d0*ct_j*zhat) & |
663 |
> |
- rcuti3*( uz_j(3) - 3.0d0*ct_j*d(3)*rcuti ) ) |
664 |
> |
|
665 |
> |
duduz_j(1) = duduz_j(1) - pref*( ri2*xhat - d(1)*rcuti3 ) |
666 |
> |
duduz_j(2) = duduz_j(2) - pref*( ri2*yhat - d(2)*rcuti3 ) |
667 |
> |
duduz_j(3) = duduz_j(3) - pref*( ri2*zhat - d(3)*rcuti3 ) |
668 |
|
|
669 |
< |
!! this has a + sign in the () because the rij vector is |
670 |
< |
!! r_j - r_i and the charge-dipole potential takes the origin |
671 |
< |
!! as the point dipole, which is atom j in this case. |
669 |
> |
else |
670 |
> |
if (j_is_SplitDipole) then |
671 |
> |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
672 |
> |
ri = 1.0_dp / BigR |
673 |
> |
scale = rij * ri |
674 |
> |
else |
675 |
> |
ri = riji |
676 |
> |
scale = 1.0_dp |
677 |
> |
endif |
678 |
> |
|
679 |
> |
ri2 = ri * ri |
680 |
> |
ri3 = ri2 * ri |
681 |
> |
sc2 = scale * scale |
682 |
> |
|
683 |
> |
vterm = - pref * ct_j * ri2 * scale |
684 |
> |
vpair = vpair + swi * vterm |
685 |
> |
epot = epot + vterm |
686 |
> |
|
687 |
> |
!! this has a + sign in the () because the rij vector is |
688 |
> |
!! r_j - r_i and the charge-dipole potential takes the origin |
689 |
> |
!! as the point dipole, which is atom j in this case. |
690 |
> |
|
691 |
> |
dudx = dudx - pref * ri3 * ( uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
692 |
> |
dudy = dudy - pref * ri3 * ( uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
693 |
> |
dudz = dudz - pref * ri3 * ( uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
694 |
> |
|
695 |
> |
duduz_j(1) = duduz_j(1) - pref * ri2 * xhat * scale |
696 |
> |
duduz_j(2) = duduz_j(2) - pref * ri2 * yhat * scale |
697 |
> |
duduz_j(3) = duduz_j(3) - pref * ri2 * zhat * scale |
698 |
|
|
699 |
< |
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 |
< |
|
699 |
> |
endif |
700 |
|
endif |
701 |
|
|
702 |
|
if (j_is_Quadrupole) then |
708 |
|
cz2 = cz_j * cz_j |
709 |
|
|
710 |
|
|
711 |
< |
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 |
711 |
> |
pref = sw * pre14 * q_i / 3.0_dp |
712 |
|
|
713 |
< |
dudx = dudx - 5.0_dp*sw*vterm*riji*xhat + pref * sw * ri4 * ( & |
714 |
< |
qxx_j*(6.0_dp*cx_j*ux_j(1) - 2.0_dp*xhat) + & |
715 |
< |
qyy_j*(6.0_dp*cy_j*uy_j(1) - 2.0_dp*xhat) + & |
716 |
< |
qzz_j*(6.0_dp*cz_j*uz_j(1) - 2.0_dp*xhat) ) |
717 |
< |
dudy = dudy - 5.0_dp*sw*vterm*riji*yhat + pref * sw * ri4 * ( & |
718 |
< |
qxx_j*(6.0_dp*cx_j*ux_j(2) - 2.0_dp*yhat) + & |
719 |
< |
qyy_j*(6.0_dp*cy_j*uy_j(2) - 2.0_dp*yhat) + & |
720 |
< |
qzz_j*(6.0_dp*cz_j*uz_j(2) - 2.0_dp*yhat) ) |
721 |
< |
dudz = dudz - 5.0_dp*sw*vterm*riji*zhat + pref * sw * ri4 * ( & |
722 |
< |
qxx_j*(6.0_dp*cx_j*ux_j(3) - 2.0_dp*zhat) + & |
723 |
< |
qyy_j*(6.0_dp*cy_j*uy_j(3) - 2.0_dp*zhat) + & |
724 |
< |
qzz_j*(6.0_dp*cz_j*uz_j(3) - 2.0_dp*zhat) ) |
725 |
< |
|
726 |
< |
dudux_j(1) = dudux_j(1) + pref * sw * ri3 * (qxx_j*6.0_dp*cx_j*xhat) |
727 |
< |
dudux_j(2) = dudux_j(2) + pref * sw * ri3 * (qxx_j*6.0_dp*cx_j*yhat) |
728 |
< |
dudux_j(3) = dudux_j(3) + pref * sw * ri3 * (qxx_j*6.0_dp*cx_j*zhat) |
729 |
< |
|
730 |
< |
duduy_j(1) = duduy_j(1) + pref * sw * ri3 * (qyy_j*6.0_dp*cy_j*xhat) |
731 |
< |
duduy_j(2) = duduy_j(2) + pref * sw * ri3 * (qyy_j*6.0_dp*cy_j*yhat) |
732 |
< |
duduy_j(3) = duduy_j(3) + pref * sw * ri3 * (qyy_j*6.0_dp*cy_j*zhat) |
733 |
< |
|
734 |
< |
duduz_j(1) = duduz_j(1) + pref * sw * ri3 * (qzz_j*6.0_dp*cz_j*xhat) |
735 |
< |
duduz_j(2) = duduz_j(2) + pref * sw * ri3 * (qzz_j*6.0_dp*cz_j*yhat) |
736 |
< |
duduz_j(3) = duduz_j(3) + pref * sw * ri3 * (qzz_j*6.0_dp*cz_j*zhat) |
737 |
< |
endif |
738 |
< |
|
739 |
< |
endif |
740 |
< |
|
741 |
< |
if (i_is_Dipole) then |
742 |
< |
|
743 |
< |
if (j_is_Charge) then |
744 |
< |
|
745 |
< |
if (i_is_SplitDipole) then |
746 |
< |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
747 |
< |
ri = 1.0_dp / BigR |
748 |
< |
scale = rij * ri |
713 |
> |
if (summationMethod .eq. UNDAMPED_WOLF) then |
714 |
> |
vterm1 = pref * ri3*( qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
715 |
> |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
716 |
> |
qzz_j * (3.0_dp*cz2 - 1.0_dp) ) |
717 |
> |
vterm2 = pref * rcuti3*( qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
718 |
> |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
719 |
> |
qzz_j * (3.0_dp*cz2 - 1.0_dp) ) |
720 |
> |
vpair = vpair + swi*( vterm1 - vterm2 ) |
721 |
> |
epot = epot + ( vterm1 - vterm2 ) |
722 |
> |
|
723 |
> |
dudx = dudx - (5.0_dp * & |
724 |
> |
(vterm1*riji*xhat - vterm2*rcuti2*d(1))) + pref * ( & |
725 |
> |
(ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(1)) - & |
726 |
> |
qxx_j*2.0_dp*(xhat - rcuti*d(1))) + & |
727 |
> |
(ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(1)) - & |
728 |
> |
qyy_j*2.0_dp*(xhat - rcuti*d(1))) + & |
729 |
> |
(ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(1)) - & |
730 |
> |
qzz_j*2.0_dp*(xhat - rcuti*d(1))) ) |
731 |
> |
dudy = dudy - (5.0_dp * & |
732 |
> |
(vterm1*riji*yhat - vterm2*rcuti2*d(2))) + pref * ( & |
733 |
> |
(ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(2)) - & |
734 |
> |
qxx_j*2.0_dp*(yhat - rcuti*d(2))) + & |
735 |
> |
(ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(2)) - & |
736 |
> |
qyy_j*2.0_dp*(yhat - rcuti*d(2))) + & |
737 |
> |
(ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(2)) - & |
738 |
> |
qzz_j*2.0_dp*(yhat - rcuti*d(2))) ) |
739 |
> |
dudz = dudz - (5.0_dp * & |
740 |
> |
(vterm1*riji*zhat - vterm2*rcuti2*d(3))) + pref * ( & |
741 |
> |
(ri4 - rcuti4)*(qxx_j*(6.0_dp*cx_j*ux_j(3)) - & |
742 |
> |
qxx_j*2.0_dp*(zhat - rcuti*d(3))) + & |
743 |
> |
(ri4 - rcuti4)*(qyy_j*(6.0_dp*cy_j*uy_j(3)) - & |
744 |
> |
qyy_j*2.0_dp*(zhat - rcuti*d(3))) + & |
745 |
> |
(ri4 - rcuti4)*(qzz_j*(6.0_dp*cz_j*uz_j(3)) - & |
746 |
> |
qzz_j*2.0_dp*(zhat - rcuti*d(3))) ) |
747 |
> |
|
748 |
> |
dudux_j(1) = dudux_j(1) + pref * (ri3*(qxx_j*6.0_dp*cx_j*xhat) - & |
749 |
> |
rcuti4*(qxx_j*6.0_dp*cx_j*d(1))) |
750 |
> |
dudux_j(2) = dudux_j(2) + pref * (ri3*(qxx_j*6.0_dp*cx_j*yhat) - & |
751 |
> |
rcuti4*(qxx_j*6.0_dp*cx_j*d(2))) |
752 |
> |
dudux_j(3) = dudux_j(3) + pref * (ri3*(qxx_j*6.0_dp*cx_j*zhat) - & |
753 |
> |
rcuti4*(qxx_j*6.0_dp*cx_j*d(3))) |
754 |
> |
|
755 |
> |
duduy_j(1) = duduy_j(1) + pref * (ri3*(qyy_j*6.0_dp*cy_j*xhat) - & |
756 |
> |
rcuti4*(qyy_j*6.0_dp*cx_j*d(1))) |
757 |
> |
duduy_j(2) = duduy_j(2) + pref * (ri3*(qyy_j*6.0_dp*cy_j*yhat) - & |
758 |
> |
rcuti4*(qyy_j*6.0_dp*cx_j*d(2))) |
759 |
> |
duduy_j(3) = duduy_j(3) + pref * (ri3*(qyy_j*6.0_dp*cy_j*zhat) - & |
760 |
> |
rcuti4*(qyy_j*6.0_dp*cx_j*d(3))) |
761 |
> |
|
762 |
> |
duduz_j(1) = duduz_j(1) + pref * (ri3*(qzz_j*6.0_dp*cz_j*xhat) - & |
763 |
> |
rcuti4*(qzz_j*6.0_dp*cx_j*d(1))) |
764 |
> |
duduz_j(2) = duduz_j(2) + pref * (ri3*(qzz_j*6.0_dp*cz_j*yhat) - & |
765 |
> |
rcuti4*(qzz_j*6.0_dp*cx_j*d(2))) |
766 |
> |
duduz_j(3) = duduz_j(3) + pref * (ri3*(qzz_j*6.0_dp*cz_j*zhat) - & |
767 |
> |
rcuti4*(qzz_j*6.0_dp*cx_j*d(3))) |
768 |
> |
|
769 |
|
else |
770 |
< |
ri = riji |
771 |
< |
scale = 1.0_dp |
772 |
< |
endif |
773 |
< |
|
774 |
< |
ri2 = ri * ri |
609 |
< |
ri3 = ri2 * ri |
610 |
< |
sc2 = scale * scale |
770 |
> |
vterm = pref * ri3 * (qxx_j * (3.0_dp*cx2 - 1.0_dp) + & |
771 |
> |
qyy_j * (3.0_dp*cy2 - 1.0_dp) + & |
772 |
> |
qzz_j * (3.0_dp*cz2 - 1.0_dp)) |
773 |
> |
vpair = vpair + swi * vterm |
774 |
> |
epot = epot + vterm |
775 |
|
|
776 |
< |
pref = pre12 * q_j * mu_i |
777 |
< |
vterm = pref * ct_i * ri2 * scale |
778 |
< |
vpair = vpair + vterm |
779 |
< |
epot = epot + sw * vterm |
776 |
> |
dudx = dudx - 5.0_dp*vterm*riji*xhat + pref * ri4 * ( & |
777 |
> |
qxx_j*(6.0_dp*cx_j*ux_j(1) - 2.0_dp*xhat) + & |
778 |
> |
qyy_j*(6.0_dp*cy_j*uy_j(1) - 2.0_dp*xhat) + & |
779 |
> |
qzz_j*(6.0_dp*cz_j*uz_j(1) - 2.0_dp*xhat) ) |
780 |
> |
dudy = dudy - 5.0_dp*vterm*riji*yhat + pref * ri4 * ( & |
781 |
> |
qxx_j*(6.0_dp*cx_j*ux_j(2) - 2.0_dp*yhat) + & |
782 |
> |
qyy_j*(6.0_dp*cy_j*uy_j(2) - 2.0_dp*yhat) + & |
783 |
> |
qzz_j*(6.0_dp*cz_j*uz_j(2) - 2.0_dp*yhat) ) |
784 |
> |
dudz = dudz - 5.0_dp*vterm*riji*zhat + pref * ri4 * ( & |
785 |
> |
qxx_j*(6.0_dp*cx_j*ux_j(3) - 2.0_dp*zhat) + & |
786 |
> |
qyy_j*(6.0_dp*cy_j*uy_j(3) - 2.0_dp*zhat) + & |
787 |
> |
qzz_j*(6.0_dp*cz_j*uz_j(3) - 2.0_dp*zhat) ) |
788 |
> |
|
789 |
> |
dudux_j(1) = dudux_j(1) + pref * ri3*(qxx_j*6.0_dp*cx_j*xhat) |
790 |
> |
dudux_j(2) = dudux_j(2) + pref * ri3*(qxx_j*6.0_dp*cx_j*yhat) |
791 |
> |
dudux_j(3) = dudux_j(3) + pref * ri3*(qxx_j*6.0_dp*cx_j*zhat) |
792 |
> |
|
793 |
> |
duduy_j(1) = duduy_j(1) + pref * ri3*(qyy_j*6.0_dp*cy_j*xhat) |
794 |
> |
duduy_j(2) = duduy_j(2) + pref * ri3*(qyy_j*6.0_dp*cy_j*yhat) |
795 |
> |
duduy_j(3) = duduy_j(3) + pref * ri3*(qyy_j*6.0_dp*cy_j*zhat) |
796 |
> |
|
797 |
> |
duduz_j(1) = duduz_j(1) + pref * ri3*(qzz_j*6.0_dp*cz_j*xhat) |
798 |
> |
duduz_j(2) = duduz_j(2) + pref * ri3*(qzz_j*6.0_dp*cz_j*yhat) |
799 |
> |
duduz_j(3) = duduz_j(3) + pref * ri3*(qzz_j*6.0_dp*cz_j*zhat) |
800 |
> |
|
801 |
> |
endif |
802 |
> |
endif |
803 |
> |
endif |
804 |
|
|
805 |
< |
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) |
805 |
> |
if (i_is_Dipole) then |
806 |
|
|
807 |
< |
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 |
807 |
> |
if (j_is_Charge) then |
808 |
|
|
809 |
< |
if (j_is_Dipole) then |
809 |
> |
pref = sw * pre12 * q_j * mu_i |
810 |
|
|
811 |
< |
if (i_is_SplitDipole) then |
812 |
< |
if (j_is_SplitDipole) then |
813 |
< |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i + 0.25_dp * d_j * d_j) |
814 |
< |
else |
815 |
< |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
816 |
< |
endif |
817 |
< |
ri = 1.0_dp / BigR |
818 |
< |
scale = rij * ri |
811 |
> |
if (summationMethod .eq. UNDAMPED_WOLF) then |
812 |
> |
ri2 = riji * riji |
813 |
> |
ri3 = ri2 * riji |
814 |
> |
|
815 |
> |
vterm = pref * ct_i * (ri2 - rcuti2) |
816 |
> |
vpair = vpair + swi * vterm |
817 |
> |
epot = epot + vterm |
818 |
> |
|
819 |
> |
!! this has a + sign in the () because the rij vector is |
820 |
> |
!! r_j - r_i and the charge-dipole potential takes the origin |
821 |
> |
!! as the point dipole, which is atom j in this case. |
822 |
> |
|
823 |
> |
dudx = dudx + pref * ( ri3*( uz_i(1) - 3.0d0*ct_i*xhat) & |
824 |
> |
- rcuti3*( uz_i(1) - 3.0d0*ct_i*d(1)*rcuti ) ) |
825 |
> |
dudy = dudy + pref * ( ri3*( uz_i(2) - 3.0d0*ct_i*yhat) & |
826 |
> |
- rcuti3*( uz_i(2) - 3.0d0*ct_i*d(2)*rcuti ) ) |
827 |
> |
dudz = dudz + pref * ( ri3*( uz_i(3) - 3.0d0*ct_i*zhat) & |
828 |
> |
- rcuti3*( uz_i(3) - 3.0d0*ct_i*d(3)*rcuti ) ) |
829 |
> |
|
830 |
> |
duduz_i(1) = duduz_i(1) - pref*( ri2*xhat - d(1)*rcuti3 ) |
831 |
> |
duduz_i(2) = duduz_i(2) - pref*( ri2*yhat - d(2)*rcuti3 ) |
832 |
> |
duduz_i(3) = duduz_i(3) - pref*( ri2*zhat - d(3)*rcuti3 ) |
833 |
> |
|
834 |
|
else |
835 |
< |
if (j_is_SplitDipole) then |
836 |
< |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
835 |
> |
if (i_is_SplitDipole) then |
836 |
> |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
837 |
|
ri = 1.0_dp / BigR |
838 |
< |
scale = rij * ri |
839 |
< |
else |
838 |
> |
scale = rij * ri |
839 |
> |
else |
840 |
|
ri = riji |
841 |
|
scale = 1.0_dp |
842 |
|
endif |
843 |
+ |
|
844 |
+ |
ri2 = ri * ri |
845 |
+ |
ri3 = ri2 * ri |
846 |
+ |
sc2 = scale * scale |
847 |
+ |
|
848 |
+ |
vterm = pref * ct_i * ri2 * scale |
849 |
+ |
vpair = vpair + swi * vterm |
850 |
+ |
epot = epot + vterm |
851 |
+ |
|
852 |
+ |
dudx = dudx + pref * ri3 * ( uz_i(1) - 3.0d0 * ct_i * xhat*sc2) |
853 |
+ |
dudy = dudy + pref * ri3 * ( uz_i(2) - 3.0d0 * ct_i * yhat*sc2) |
854 |
+ |
dudz = dudz + pref * ri3 * ( uz_i(3) - 3.0d0 * ct_i * zhat*sc2) |
855 |
+ |
|
856 |
+ |
duduz_i(1) = duduz_i(1) + pref * ri2 * xhat * scale |
857 |
+ |
duduz_i(2) = duduz_i(2) + pref * ri2 * yhat * scale |
858 |
+ |
duduz_i(3) = duduz_i(3) + pref * ri2 * zhat * scale |
859 |
|
endif |
860 |
+ |
endif |
861 |
|
|
862 |
< |
ct_ij = uz_i(1)*uz_j(1) + uz_i(2)*uz_j(2) + uz_i(3)*uz_j(3) |
862 |
> |
if (j_is_Dipole) then |
863 |
|
|
864 |
< |
ri2 = ri * ri |
650 |
< |
ri3 = ri2 * ri |
651 |
< |
ri4 = ri2 * ri2 |
652 |
< |
sc2 = scale * scale |
864 |
> |
pref = sw * pre22 * mu_i * mu_j |
865 |
|
|
866 |
< |
pref = pre22 * mu_i * mu_j |
867 |
< |
vterm = pref * ri3 * (ct_ij - 3.0d0 * ct_i * ct_j * sc2) |
868 |
< |
vpair = vpair + vterm |
869 |
< |
epot = epot + sw * vterm |
658 |
< |
|
659 |
< |
a1 = 5.0d0 * ct_i * ct_j * sc2 - ct_ij |
866 |
> |
if (summationMethod .eq. UNDAMPED_WOLF) then |
867 |
> |
ri2 = riji * riji |
868 |
> |
ri3 = ri2 * riji |
869 |
> |
ri4 = ri2 * ri2 |
870 |
|
|
871 |
< |
dudx=dudx+pref*sw*3.0d0*ri4*scale*(a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) |
872 |
< |
dudy=dudy+pref*sw*3.0d0*ri4*scale*(a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) |
873 |
< |
dudz=dudz+pref*sw*3.0d0*ri4*scale*(a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) |
874 |
< |
|
875 |
< |
duduz_i(1) = duduz_i(1) + pref*sw*ri3*(uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
876 |
< |
duduz_i(2) = duduz_i(2) + pref*sw*ri3*(uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
877 |
< |
duduz_i(3) = duduz_i(3) + pref*sw*ri3*(uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
878 |
< |
|
879 |
< |
duduz_j(1) = duduz_j(1) + pref*sw*ri3*(uz_i(1) - 3.0d0*ct_i*xhat*sc2) |
880 |
< |
duduz_j(2) = duduz_j(2) + pref*sw*ri3*(uz_i(2) - 3.0d0*ct_i*yhat*sc2) |
881 |
< |
duduz_j(3) = duduz_j(3) + pref*sw*ri3*(uz_i(3) - 3.0d0*ct_i*zhat*sc2) |
871 |
> |
vterm = pref * (ri3 - rcuti3) * (ct_ij - 3.0d0 * ct_i * ct_j) |
872 |
> |
vpair = vpair + swi * vterm |
873 |
> |
epot = epot + vterm |
874 |
> |
|
875 |
> |
a1 = 5.0d0 * ct_i * ct_j - ct_ij |
876 |
> |
|
877 |
> |
dudx = dudx + pref*3.0d0*ri4 & |
878 |
> |
*(a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) - & |
879 |
> |
pref*3.0d0*rcuti4*(a1*rcuti*d(1)-ct_i*uz_j(1)-ct_j*uz_i(1)) |
880 |
> |
dudy = dudy + pref*3.0d0*ri4 & |
881 |
> |
*(a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) - & |
882 |
> |
pref*3.0d0*rcuti4*(a1*rcuti*d(2)-ct_i*uz_j(2)-ct_j*uz_i(2)) |
883 |
> |
dudz = dudz + pref*3.0d0*ri4 & |
884 |
> |
*(a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) - & |
885 |
> |
pref*3.0d0*rcuti4*(a1*rcuti*d(3)-ct_i*uz_j(3)-ct_j*uz_i(3)) |
886 |
> |
|
887 |
> |
duduz_i(1) = duduz_i(1) + pref*(ri3*(uz_j(1) - 3.0d0*ct_j*xhat) & |
888 |
> |
- rcuti3*(uz_j(1) - 3.0d0*ct_j*d(1)*rcuti)) |
889 |
> |
duduz_i(2) = duduz_i(2) + pref*(ri3*(uz_j(2) - 3.0d0*ct_j*yhat) & |
890 |
> |
- rcuti3*(uz_j(2) - 3.0d0*ct_j*d(2)*rcuti)) |
891 |
> |
duduz_i(3) = duduz_i(3) + pref*(ri3*(uz_j(3) - 3.0d0*ct_j*zhat) & |
892 |
> |
- rcuti3*(uz_j(3) - 3.0d0*ct_j*d(3)*rcuti)) |
893 |
> |
duduz_j(1) = duduz_j(1) + pref*(ri3*(uz_i(1) - 3.0d0*ct_i*xhat) & |
894 |
> |
- rcuti3*(uz_i(1) - 3.0d0*ct_i*d(1)*rcuti)) |
895 |
> |
duduz_j(2) = duduz_j(2) + pref*(ri3*(uz_i(2) - 3.0d0*ct_i*yhat) & |
896 |
> |
- rcuti3*(uz_i(2) - 3.0d0*ct_i*d(2)*rcuti)) |
897 |
> |
duduz_j(3) = duduz_j(3) + pref*(ri3*(uz_i(3) - 3.0d0*ct_i*zhat) & |
898 |
> |
- rcuti3*(uz_i(3) - 3.0d0*ct_i*d(3)*rcuti)) |
899 |
> |
else |
900 |
> |
|
901 |
> |
if (i_is_SplitDipole) then |
902 |
> |
if (j_is_SplitDipole) then |
903 |
> |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i + 0.25_dp * d_j * d_j) |
904 |
> |
else |
905 |
> |
BigR = sqrt(r2 + 0.25_dp * d_i * d_i) |
906 |
> |
endif |
907 |
> |
ri = 1.0_dp / BigR |
908 |
> |
scale = rij * ri |
909 |
> |
else |
910 |
> |
if (j_is_SplitDipole) then |
911 |
> |
BigR = sqrt(r2 + 0.25_dp * d_j * d_j) |
912 |
> |
ri = 1.0_dp / BigR |
913 |
> |
scale = rij * ri |
914 |
> |
else |
915 |
> |
ri = riji |
916 |
> |
scale = 1.0_dp |
917 |
> |
endif |
918 |
> |
endif |
919 |
> |
|
920 |
> |
ct_ij = uz_i(1)*uz_j(1) + uz_i(2)*uz_j(2) + uz_i(3)*uz_j(3) |
921 |
> |
|
922 |
> |
ri2 = ri * ri |
923 |
> |
ri3 = ri2 * ri |
924 |
> |
ri4 = ri2 * ri2 |
925 |
> |
sc2 = scale * scale |
926 |
> |
|
927 |
> |
vterm = pref * ri3 * (ct_ij - 3.0d0 * ct_i * ct_j * sc2) |
928 |
> |
vpair = vpair + swi * vterm |
929 |
> |
epot = epot + vterm |
930 |
> |
|
931 |
> |
a1 = 5.0d0 * ct_i * ct_j * sc2 - ct_ij |
932 |
> |
|
933 |
> |
dudx = dudx + pref*3.0d0*ri4*scale & |
934 |
> |
*(a1*xhat-ct_i*uz_j(1)-ct_j*uz_i(1)) |
935 |
> |
dudy = dudy + pref*3.0d0*ri4*scale & |
936 |
> |
*(a1*yhat-ct_i*uz_j(2)-ct_j*uz_i(2)) |
937 |
> |
dudz = dudz + pref*3.0d0*ri4*scale & |
938 |
> |
*(a1*zhat-ct_i*uz_j(3)-ct_j*uz_i(3)) |
939 |
> |
|
940 |
> |
duduz_i(1) = duduz_i(1) + pref*ri3 & |
941 |
> |
*(uz_j(1) - 3.0d0*ct_j*xhat*sc2) |
942 |
> |
duduz_i(2) = duduz_i(2) + pref*ri3 & |
943 |
> |
*(uz_j(2) - 3.0d0*ct_j*yhat*sc2) |
944 |
> |
duduz_i(3) = duduz_i(3) + pref*ri3 & |
945 |
> |
*(uz_j(3) - 3.0d0*ct_j*zhat*sc2) |
946 |
> |
|
947 |
> |
duduz_j(1) = duduz_j(1) + pref*ri3 & |
948 |
> |
*(uz_i(1) - 3.0d0*ct_i*xhat*sc2) |
949 |
> |
duduz_j(2) = duduz_j(2) + pref*ri3 & |
950 |
> |
*(uz_i(2) - 3.0d0*ct_i*yhat*sc2) |
951 |
> |
duduz_j(3) = duduz_j(3) + pref*ri3 & |
952 |
> |
*(uz_i(3) - 3.0d0*ct_i*zhat*sc2) |
953 |
> |
endif |
954 |
|
endif |
673 |
– |
|
955 |
|
endif |
956 |
|
|
957 |
|
if (i_is_Quadrupole) then |
958 |
|
if (j_is_Charge) then |
959 |
< |
|
959 |
> |
|
960 |
|
ri2 = riji * riji |
961 |
|
ri3 = ri2 * riji |
962 |
|
ri4 = ri2 * ri2 |
963 |
|
cx2 = cx_i * cx_i |
964 |
|
cy2 = cy_i * cy_i |
965 |
|
cz2 = cz_i * cz_i |
966 |
< |
|
967 |
< |
pref = pre14 * q_j / 1.0_dp |
968 |
< |
vterm = pref * ri3 * (qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
969 |
< |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
970 |
< |
qzz_i * (3.0_dp*cz2 - 1.0_dp)) |
971 |
< |
vpair = vpair + vterm |
972 |
< |
epot = epot + sw * vterm |
973 |
< |
|
974 |
< |
dudx = dudx - 5.0_dp*sw*vterm*riji*xhat + pref * sw * ri4 * ( & |
975 |
< |
qxx_i*(6.0_dp*cx_i*ux_i(1) - 2.0_dp*xhat) + & |
976 |
< |
qyy_i*(6.0_dp*cy_i*uy_i(1) - 2.0_dp*xhat) + & |
977 |
< |
qzz_i*(6.0_dp*cz_i*uz_i(1) - 2.0_dp*xhat) ) |
978 |
< |
dudy = dudy - 5.0_dp*sw*vterm*riji*yhat + pref * sw * ri4 * ( & |
979 |
< |
qxx_i*(6.0_dp*cx_i*ux_i(2) - 2.0_dp*yhat) + & |
980 |
< |
qyy_i*(6.0_dp*cy_i*uy_i(2) - 2.0_dp*yhat) + & |
981 |
< |
qzz_i*(6.0_dp*cz_i*uz_i(2) - 2.0_dp*yhat) ) |
982 |
< |
dudz = dudz - 5.0_dp*sw*vterm*riji*zhat + pref * sw * ri4 * ( & |
983 |
< |
qxx_i*(6.0_dp*cx_i*ux_i(3) - 2.0_dp*zhat) + & |
984 |
< |
qyy_i*(6.0_dp*cy_i*uy_i(3) - 2.0_dp*zhat) + & |
985 |
< |
qzz_i*(6.0_dp*cz_i*uz_i(3) - 2.0_dp*zhat) ) |
986 |
< |
|
987 |
< |
dudux_i(1) = dudux_i(1) + pref * sw * ri3 * (qxx_i*6.0_dp*cx_i*xhat) |
988 |
< |
dudux_i(2) = dudux_i(2) + pref * sw * ri3 * (qxx_i*6.0_dp*cx_i*yhat) |
989 |
< |
dudux_i(3) = dudux_i(3) + pref * sw * ri3 * (qxx_i*6.0_dp*cx_i*zhat) |
990 |
< |
|
991 |
< |
duduy_i(1) = duduy_i(1) + pref * sw * ri3 * (qyy_i*6.0_dp*cy_i*xhat) |
992 |
< |
duduy_i(2) = duduy_i(2) + pref * sw * ri3 * (qyy_i*6.0_dp*cy_i*yhat) |
993 |
< |
duduy_i(3) = duduy_i(3) + pref * sw * ri3 * (qyy_i*6.0_dp*cy_i*zhat) |
994 |
< |
|
995 |
< |
duduz_i(1) = duduz_i(1) + pref * sw * ri3 * (qzz_i*6.0_dp*cz_i*xhat) |
996 |
< |
duduz_i(2) = duduz_i(2) + pref * sw * ri3 * (qzz_i*6.0_dp*cz_i*yhat) |
997 |
< |
duduz_i(3) = duduz_i(3) + pref * sw * ri3 * (qzz_i*6.0_dp*cz_i*zhat) |
966 |
> |
|
967 |
> |
pref = sw * pre14 * q_j / 3.0_dp |
968 |
> |
|
969 |
> |
if (summationMethod .eq. UNDAMPED_WOLF) then |
970 |
> |
vterm1 = pref * ri3*( qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
971 |
> |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
972 |
> |
qzz_i * (3.0_dp*cz2 - 1.0_dp) ) |
973 |
> |
vterm2 = pref * rcuti3*( qxx_i * (3.0_dp*cx2 - 1.0_dp) + & |
974 |
> |
qyy_i * (3.0_dp*cy2 - 1.0_dp) + & |
975 |
> |
qzz_i * (3.0_dp*cz2 - 1.0_dp) ) |
976 |
> |
vpair = vpair + swi * ( vterm1 - vterm2 ) |
977 |
> |
epot = epot + ( vterm1 - vterm2 ) |
978 |
> |
|
979 |
> |
dudx = dudx - (5.0_dp*(vterm1*riji*xhat - vterm2*rcuti2*d(1))) + & |
980 |
> |
pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(1)) - & |
981 |
> |
qxx_i*2.0_dp*(xhat - rcuti*d(1))) + & |
982 |
> |
(ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(1)) - & |
983 |
> |
qyy_i*2.0_dp*(xhat - rcuti*d(1))) + & |
984 |
> |
(ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(1)) - & |
985 |
> |
qzz_i*2.0_dp*(xhat - rcuti*d(1))) ) |
986 |
> |
dudy = dudy - (5.0_dp*(vterm1*riji*yhat - vterm2*rcuti2*d(2))) + & |
987 |
> |
pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(2)) - & |
988 |
> |
qxx_i*2.0_dp*(yhat - rcuti*d(2))) + & |
989 |
> |
(ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(2)) - & |
990 |
> |
qyy_i*2.0_dp*(yhat - rcuti*d(2))) + & |
991 |
> |
(ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(2)) - & |
992 |
> |
qzz_i*2.0_dp*(yhat - rcuti*d(2))) ) |
993 |
> |
dudz = dudz - (5.0_dp*(vterm1*riji*zhat - vterm2*rcuti2*d(3))) + & |
994 |
> |
pref * ( (ri4 - rcuti4)*(qxx_i*(6.0_dp*cx_i*ux_i(3)) - & |
995 |
> |
qxx_i*2.0_dp*(zhat - rcuti*d(3))) + & |
996 |
> |
(ri4 - rcuti4)*(qyy_i*(6.0_dp*cy_i*uy_i(3)) - & |
997 |
> |
qyy_i*2.0_dp*(zhat - rcuti*d(3))) + & |
998 |
> |
(ri4 - rcuti4)*(qzz_i*(6.0_dp*cz_i*uz_i(3)) - & |
999 |
> |
qzz_i*2.0_dp*(zhat - rcuti*d(3))) ) |
1000 |
> |
|
1001 |
> |
dudux_i(1) = dudux_i(1) + pref * (ri3*(qxx_i*6.0_dp*cx_i*xhat) - & |
1002 |
> |
rcuti4*(qxx_i*6.0_dp*cx_i*d(1))) |
1003 |
> |
dudux_i(2) = dudux_i(2) + pref * (ri3*(qxx_i*6.0_dp*cx_i*yhat) - & |
1004 |
> |
rcuti4*(qxx_i*6.0_dp*cx_i*d(2))) |
1005 |
> |
dudux_i(3) = dudux_i(3) + pref * (ri3*(qxx_i*6.0_dp*cx_i*zhat) - & |
1006 |
> |
rcuti4*(qxx_i*6.0_dp*cx_i*d(3))) |
1007 |
> |
|
1008 |
> |
duduy_i(1) = duduy_i(1) + pref * (ri3*(qyy_i*6.0_dp*cy_i*xhat) - & |
1009 |
> |
rcuti4*(qyy_i*6.0_dp*cx_i*d(1))) |
1010 |
> |
duduy_i(2) = duduy_i(2) + pref * (ri3*(qyy_i*6.0_dp*cy_i*yhat) - & |
1011 |
> |
rcuti4*(qyy_i*6.0_dp*cx_i*d(2))) |
1012 |
> |
duduy_i(3) = duduy_i(3) + pref * (ri3*(qyy_i*6.0_dp*cy_i*zhat) - & |
1013 |
> |
rcuti4*(qyy_i*6.0_dp*cx_i*d(3))) |
1014 |
> |
|
1015 |
> |
duduz_i(1) = duduz_i(1) + pref * (ri3*(qzz_i*6.0_dp*cz_i*xhat) - & |
1016 |
> |
rcuti4*(qzz_i*6.0_dp*cx_i*d(1))) |
1017 |
> |
duduz_i(2) = duduz_i(2) + pref * (ri3*(qzz_i*6.0_dp*cz_i*yhat) - & |
1018 |
> |
rcuti4*(qzz_i*6.0_dp*cx_i*d(2))) |
1019 |
> |
duduz_i(3) = duduz_i(3) + pref * (ri3*(qzz_i*6.0_dp*cz_i*zhat) - & |
1020 |
> |
rcuti4*(qzz_i*6.0_dp*cx_i*d(3))) |
1021 |
> |
|
1022 |
> |
else |
1023 |
> |
vterm = 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 |
> |
vpair = vpair + swi * vterm |
1027 |
> |
epot = epot + vterm |
1028 |
> |
|
1029 |
> |
dudx = dudx - 5.0_dp*vterm*riji*xhat + pref * ri4 * ( & |
1030 |
> |
qxx_i*(6.0_dp*cx_i*ux_i(1) - 2.0_dp*xhat) + & |
1031 |
> |
qyy_i*(6.0_dp*cy_i*uy_i(1) - 2.0_dp*xhat) + & |
1032 |
> |
qzz_i*(6.0_dp*cz_i*uz_i(1) - 2.0_dp*xhat) ) |
1033 |
> |
dudy = dudy - 5.0_dp*vterm*riji*yhat + pref * ri4 * ( & |
1034 |
> |
qxx_i*(6.0_dp*cx_i*ux_i(2) - 2.0_dp*yhat) + & |
1035 |
> |
qyy_i*(6.0_dp*cy_i*uy_i(2) - 2.0_dp*yhat) + & |
1036 |
> |
qzz_i*(6.0_dp*cz_i*uz_i(2) - 2.0_dp*yhat) ) |
1037 |
> |
dudz = dudz - 5.0_dp*vterm*riji*zhat + pref * ri4 * ( & |
1038 |
> |
qxx_i*(6.0_dp*cx_i*ux_i(3) - 2.0_dp*zhat) + & |
1039 |
> |
qyy_i*(6.0_dp*cy_i*uy_i(3) - 2.0_dp*zhat) + & |
1040 |
> |
qzz_i*(6.0_dp*cz_i*uz_i(3) - 2.0_dp*zhat) ) |
1041 |
> |
|
1042 |
> |
dudux_i(1) = dudux_i(1) + pref * ri3*(qxx_i*6.0_dp*cx_i*xhat) |
1043 |
> |
dudux_i(2) = dudux_i(2) + pref * ri3*(qxx_i*6.0_dp*cx_i*yhat) |
1044 |
> |
dudux_i(3) = dudux_i(3) + pref * ri3*(qxx_i*6.0_dp*cx_i*zhat) |
1045 |
> |
|
1046 |
> |
duduy_i(1) = duduy_i(1) + pref * ri3*(qyy_i*6.0_dp*cy_i*xhat) |
1047 |
> |
duduy_i(2) = duduy_i(2) + pref * ri3*(qyy_i*6.0_dp*cy_i*yhat) |
1048 |
> |
duduy_i(3) = duduy_i(3) + pref * ri3*(qyy_i*6.0_dp*cy_i*zhat) |
1049 |
> |
|
1050 |
> |
duduz_i(1) = duduz_i(1) + pref * ri3*(qzz_i*6.0_dp*cz_i*xhat) |
1051 |
> |
duduz_i(2) = duduz_i(2) + pref * ri3*(qzz_i*6.0_dp*cz_i*yhat) |
1052 |
> |
duduz_i(3) = duduz_i(3) + pref * ri3*(qzz_i*6.0_dp*cz_i*zhat) |
1053 |
> |
endif |
1054 |
|
endif |
1055 |
|
endif |
1056 |
< |
|
1057 |
< |
|
1056 |
> |
|
1057 |
> |
|
1058 |
|
if (do_pot) then |
1059 |
|
#ifdef IS_MPI |
1060 |
|
pot_row(atom1) = pot_row(atom1) + 0.5d0*epot |
1063 |
|
pot = pot + epot |
1064 |
|
#endif |
1065 |
|
endif |
1066 |
< |
|
1066 |
> |
|
1067 |
|
#ifdef IS_MPI |
1068 |
|
f_Row(1,atom1) = f_Row(1,atom1) + dudx |
1069 |
|
f_Row(2,atom1) = f_Row(2,atom1) + dudy |
1070 |
|
f_Row(3,atom1) = f_Row(3,atom1) + dudz |
1071 |
< |
|
1071 |
> |
|
1072 |
|
f_Col(1,atom2) = f_Col(1,atom2) - dudx |
1073 |
|
f_Col(2,atom2) = f_Col(2,atom2) - dudy |
1074 |
|
f_Col(3,atom2) = f_Col(3,atom2) - dudz |
1075 |
< |
|
1075 |
> |
|
1076 |
|
if (i_is_Dipole .or. i_is_Quadrupole) then |
1077 |
|
t_Row(1,atom1)=t_Row(1,atom1) - uz_i(2)*duduz_i(3) + uz_i(3)*duduz_i(2) |
1078 |
|
t_Row(2,atom1)=t_Row(2,atom1) - uz_i(3)*duduz_i(1) + uz_i(1)*duduz_i(3) |
1107 |
|
f(1,atom1) = f(1,atom1) + dudx |
1108 |
|
f(2,atom1) = f(2,atom1) + dudy |
1109 |
|
f(3,atom1) = f(3,atom1) + dudz |
1110 |
< |
|
1110 |
> |
|
1111 |
|
f(1,atom2) = f(1,atom2) - dudx |
1112 |
|
f(2,atom2) = f(2,atom2) - dudy |
1113 |
|
f(3,atom2) = f(3,atom2) - dudz |
1114 |
< |
|
1114 |
> |
|
1115 |
|
if (i_is_Dipole .or. i_is_Quadrupole) then |
1116 |
|
t(1,atom1)=t(1,atom1) - uz_i(2)*duduz_i(3) + uz_i(3)*duduz_i(2) |
1117 |
|
t(2,atom1)=t(2,atom1) - uz_i(3)*duduz_i(1) + uz_i(1)*duduz_i(3) |
1143 |
|
endif |
1144 |
|
|
1145 |
|
#endif |
1146 |
< |
|
1146 |
> |
|
1147 |
|
#ifdef IS_MPI |
1148 |
|
id1 = AtomRowToGlobal(atom1) |
1149 |
|
id2 = AtomColToGlobal(atom2) |
1153 |
|
#endif |
1154 |
|
|
1155 |
|
if (molMembershipList(id1) .ne. molMembershipList(id2)) then |
1156 |
< |
|
1156 |
> |
|
1157 |
|
fpair(1) = fpair(1) + dudx |
1158 |
|
fpair(2) = fpair(2) + dudy |
1159 |
|
fpair(3) = fpair(3) + dudz |
1162 |
|
|
1163 |
|
return |
1164 |
|
end subroutine doElectrostaticPair |
1165 |
< |
|
1165 |
> |
|
1166 |
> |
!! calculates the switching functions and their derivatives for a given |
1167 |
> |
subroutine calc_switch(r, mu, scale, dscale) |
1168 |
> |
|
1169 |
> |
real (kind=dp), intent(in) :: r, mu |
1170 |
> |
real (kind=dp), intent(inout) :: scale, dscale |
1171 |
> |
real (kind=dp) :: rl, ru, mulow, minRatio, temp, scaleVal |
1172 |
> |
|
1173 |
> |
! distances must be in angstroms |
1174 |
> |
rl = 2.75d0 |
1175 |
> |
ru = 3.75d0 |
1176 |
> |
mulow = 0.0d0 !3.3856d0 ! 1.84 * 1.84 |
1177 |
> |
minRatio = mulow / (mu*mu) |
1178 |
> |
scaleVal = 1.0d0 - minRatio |
1179 |
> |
|
1180 |
> |
if (r.lt.rl) then |
1181 |
> |
scale = minRatio |
1182 |
> |
dscale = 0.0d0 |
1183 |
> |
elseif (r.gt.ru) then |
1184 |
> |
scale = 1.0d0 |
1185 |
> |
dscale = 0.0d0 |
1186 |
> |
else |
1187 |
> |
scale = 1.0d0 - scaleVal*((ru + 2.0d0*r - 3.0d0*rl) * (ru-r)**2) & |
1188 |
> |
/ ((ru - rl)**3) |
1189 |
> |
dscale = -scaleVal * 6.0d0 * (r-ru)*(r-rl)/((ru - rl)**3) |
1190 |
> |
endif |
1191 |
> |
|
1192 |
> |
return |
1193 |
> |
end subroutine calc_switch |
1194 |
> |
|
1195 |
> |
subroutine destroyElectrostaticTypes() |
1196 |
> |
|
1197 |
> |
if(allocated(ElectrostaticMap)) deallocate(ElectrostaticMap) |
1198 |
> |
|
1199 |
> |
end subroutine destroyElectrostaticTypes |
1200 |
> |
|
1201 |
|
end module electrostatic_module |