| 36 |
|
* [1] Meineke, et al., J. Comp. Chem. 26, 252-271 (2005). |
| 37 |
|
* [2] Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006). |
| 38 |
|
* [3] Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008). |
| 39 |
< |
* [4] Vardeman & Gezelter, in progress (2009). |
| 39 |
> |
* [4] Kuang & Gezelter, J. Chem. Phys. 133, 164101 (2010). |
| 40 |
> |
* [5] Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011). |
| 41 |
|
*/ |
| 42 |
|
|
| 43 |
|
#include <stdio.h> |
| 46 |
|
#include <cmath> |
| 47 |
|
#include "nonbonded/Sticky.hpp" |
| 48 |
|
#include "nonbonded/LJ.hpp" |
| 49 |
+ |
#include "types/StickyAdapter.hpp" |
| 50 |
|
#include "utils/simError.h" |
| 51 |
|
|
| 52 |
|
using namespace std; |
| 53 |
|
namespace OpenMD { |
| 54 |
|
|
| 55 |
|
Sticky::Sticky() : name_("Sticky"), initialized_(false), forceField_(NULL) {} |
| 54 |
– |
|
| 55 |
– |
StickyParam Sticky::getStickyParam(AtomType* atomType) { |
| 56 |
|
|
| 57 |
– |
// Do sanity checking on the AtomType we were passed before |
| 58 |
– |
// building any data structures: |
| 59 |
– |
if (!atomType->isSticky() && !atomType->isStickyPower()) { |
| 60 |
– |
sprintf( painCave.errMsg, |
| 61 |
– |
"Sticky::getStickyParam was passed an atomType (%s) that does\n" |
| 62 |
– |
"\tnot appear to be a Sticky atom.\n", |
| 63 |
– |
atomType->getName().c_str()); |
| 64 |
– |
painCave.severity = OPENMD_ERROR; |
| 65 |
– |
painCave.isFatal = 1; |
| 66 |
– |
simError(); |
| 67 |
– |
} |
| 68 |
– |
|
| 69 |
– |
DirectionalAtomType* daType = dynamic_cast<DirectionalAtomType*>(atomType); |
| 70 |
– |
GenericData* data = daType->getPropertyByName("Sticky"); |
| 71 |
– |
if (data == NULL) { |
| 72 |
– |
sprintf( painCave.errMsg, "Sticky::getStickyParam could not find\n" |
| 73 |
– |
"\tSticky parameters for atomType %s.\n", |
| 74 |
– |
daType->getName().c_str()); |
| 75 |
– |
painCave.severity = OPENMD_ERROR; |
| 76 |
– |
painCave.isFatal = 1; |
| 77 |
– |
simError(); |
| 78 |
– |
} |
| 79 |
– |
|
| 80 |
– |
StickyParamGenericData* stickyData = dynamic_cast<StickyParamGenericData*>(data); |
| 81 |
– |
if (stickyData == NULL) { |
| 82 |
– |
sprintf( painCave.errMsg, |
| 83 |
– |
"Sticky::getStickyParam could not convert GenericData to\n" |
| 84 |
– |
"\tStickyParamGenericData for atom type %s\n", |
| 85 |
– |
daType->getName().c_str()); |
| 86 |
– |
painCave.severity = OPENMD_ERROR; |
| 87 |
– |
painCave.isFatal = 1; |
| 88 |
– |
simError(); |
| 89 |
– |
} |
| 90 |
– |
|
| 91 |
– |
return stickyData->getData(); |
| 92 |
– |
} |
| 93 |
– |
|
| 57 |
|
void Sticky::initialize() { |
| 58 |
|
|
| 59 |
|
ForceFieldOptions& fopts = forceField_->getForceFieldOptions(); |
| 66 |
|
for (at = atomTypes->beginType(i); at != NULL; |
| 67 |
|
at = atomTypes->nextType(i)) { |
| 68 |
|
|
| 69 |
< |
if (at->isSticky() || at->isStickyPower()) |
| 70 |
< |
addType(at); |
| 69 |
> |
StickyAdapter sa = StickyAdapter(at); |
| 70 |
> |
if (sa.isSticky()) addType(at); |
| 71 |
|
} |
| 72 |
|
|
| 73 |
|
initialized_ = true; |
| 75 |
|
|
| 76 |
|
void Sticky::addType(AtomType* atomType){ |
| 77 |
|
// add it to the map: |
| 115 |
– |
AtomTypeProperties atp = atomType->getATP(); |
| 78 |
|
|
| 79 |
|
pair<map<int,AtomType*>::iterator,bool> ret; |
| 80 |
< |
ret = StickyMap.insert( pair<int, AtomType*>(atp.ident, atomType) ); |
| 80 |
> |
ret = StickyMap.insert( pair<int, AtomType*>(atomType->getIdent(), |
| 81 |
> |
atomType) ); |
| 82 |
|
if (ret.second == false) { |
| 83 |
|
sprintf( painCave.errMsg, |
| 84 |
|
"Sticky already had a previous entry with ident %d\n", |
| 85 |
< |
atp.ident); |
| 85 |
> |
atomType->getIdent() ); |
| 86 |
|
painCave.severity = OPENMD_INFO; |
| 87 |
|
painCave.isFatal = 0; |
| 88 |
|
simError(); |
| 90 |
|
|
| 91 |
|
RealType w0i, v0i, v0pi, rli, rui, rlpi, rupi; |
| 92 |
|
|
| 93 |
< |
StickyParam sticky1 = getStickyParam(atomType); |
| 93 |
> |
StickyAdapter sticky1 = StickyAdapter(atomType); |
| 94 |
|
|
| 95 |
|
// Now, iterate over all known types and add to the mixing map: |
| 96 |
|
|
| 98 |
|
for( it = StickyMap.begin(); it != StickyMap.end(); ++it) { |
| 99 |
|
|
| 100 |
|
AtomType* atype2 = (*it).second; |
| 101 |
< |
|
| 102 |
< |
StickyParam sticky2 = getStickyParam(atype2); |
| 101 |
> |
|
| 102 |
> |
StickyAdapter sticky2 = StickyAdapter(atype2); |
| 103 |
|
|
| 104 |
|
StickyInteractionData mixer; |
| 105 |
|
|
| 108 |
|
// Lorentz- Berthelot mixing rules (which happen to do the right thing |
| 109 |
|
// when atomType and atype2 happen to be the same. |
| 110 |
|
|
| 111 |
< |
mixer.rl = 0.5 * ( sticky1.rl + sticky2.rl ); |
| 112 |
< |
mixer.ru = 0.5 * ( sticky1.ru + sticky2.ru ); |
| 113 |
< |
mixer.rlp = 0.5 * ( sticky1.rlp + sticky2.rlp ); |
| 114 |
< |
mixer.rup = 0.5 * ( sticky1.rup + sticky2.rup ); |
| 111 |
> |
mixer.rl = 0.5 * ( sticky1.getRl() + sticky2.getRl() ); |
| 112 |
> |
mixer.ru = 0.5 * ( sticky1.getRu() + sticky2.getRu() ); |
| 113 |
> |
mixer.rlp = 0.5 * ( sticky1.getRlp() + sticky2.getRlp() ); |
| 114 |
> |
mixer.rup = 0.5 * ( sticky1.getRup() + sticky2.getRup() ); |
| 115 |
|
mixer.rbig = max(mixer.ru, mixer.rup); |
| 116 |
< |
mixer.w0 = sqrt( sticky1.w0 * sticky2.w0 ); |
| 117 |
< |
mixer.v0 = sqrt( sticky1.v0 * sticky2.v0 ); |
| 118 |
< |
mixer.v0p = sqrt( sticky1.v0p * sticky2.v0p ); |
| 119 |
< |
mixer.isPower = atomType->isStickyPower() && atype2->isStickyPower(); |
| 116 |
> |
mixer.w0 = sqrt( sticky1.getW0() * sticky2.getW0() ); |
| 117 |
> |
mixer.v0 = sqrt( sticky1.getW0() * sticky2.getV0() ); |
| 118 |
> |
mixer.v0p = sqrt( sticky1.getV0p() * sticky2.getV0p() ); |
| 119 |
> |
mixer.isPower = sticky1.isStickyPower() && sticky2.isStickyPower(); |
| 120 |
|
|
| 121 |
|
CubicSpline* s = new CubicSpline(); |
| 122 |
|
s->addPoint(mixer.rl, 1.0); |
| 149 |
|
* idat structure. |
| 150 |
|
*/ |
| 151 |
|
|
| 152 |
< |
void Sticky::calcForce(InteractionData idat) { |
| 152 |
> |
void Sticky::calcForce(InteractionData &idat) { |
| 153 |
|
|
| 154 |
|
if (!initialized_) initialize(); |
| 155 |
|
|
| 156 |
< |
pair<AtomType*, AtomType*> key = make_pair(idat.atype1, idat.atype2); |
| 157 |
< |
StickyInteractionData mixer = MixingMap[key]; |
| 156 |
> |
map<pair<AtomType*, AtomType*>, StickyInteractionData>::iterator it; |
| 157 |
> |
it = MixingMap.find(idat.atypes); |
| 158 |
> |
if (it != MixingMap.end()) { |
| 159 |
|
|
| 160 |
< |
RealType w0 = mixer.w0; |
| 197 |
< |
RealType v0 = mixer.v0; |
| 198 |
< |
RealType v0p = mixer.v0p; |
| 199 |
< |
RealType rl = mixer.rl; |
| 200 |
< |
RealType ru = mixer.ru; |
| 201 |
< |
RealType rlp = mixer.rlp; |
| 202 |
< |
RealType rup = mixer.rup; |
| 203 |
< |
RealType rbig = mixer.rbig; |
| 204 |
< |
bool isPower = mixer.isPower; |
| 205 |
< |
|
| 206 |
< |
if (idat.rij <= rbig) { |
| 207 |
< |
|
| 208 |
< |
RealType r3 = idat.r2 * idat.rij; |
| 209 |
< |
RealType r5 = r3 * idat.r2; |
| 210 |
< |
|
| 211 |
< |
RotMat3x3d A1trans = idat.A1.transpose(); |
| 212 |
< |
RotMat3x3d A2trans = idat.A2.transpose(); |
| 213 |
< |
|
| 214 |
< |
// rotate the inter-particle separation into the two different |
| 215 |
< |
// body-fixed coordinate systems: |
| 216 |
< |
|
| 217 |
< |
Vector3d ri = idat.A1 * idat.d; |
| 218 |
< |
|
| 219 |
< |
// negative sign because this is the vector from j to i: |
| 220 |
< |
|
| 221 |
< |
Vector3d rj = - idat.A2 * idat.d; |
| 222 |
< |
|
| 223 |
< |
RealType xi = ri.x(); |
| 224 |
< |
RealType yi = ri.y(); |
| 225 |
< |
RealType zi = ri.z(); |
| 226 |
< |
|
| 227 |
< |
RealType xj = rj.x(); |
| 228 |
< |
RealType yj = rj.y(); |
| 229 |
< |
RealType zj = rj.z(); |
| 230 |
< |
|
| 231 |
< |
RealType xi2 = xi * xi; |
| 232 |
< |
RealType yi2 = yi * yi; |
| 233 |
< |
RealType zi2 = zi * zi; |
| 234 |
< |
|
| 235 |
< |
RealType xj2 = xj * xj; |
| 236 |
< |
RealType yj2 = yj * yj; |
| 237 |
< |
RealType zj2 = zj * zj; |
| 238 |
< |
|
| 239 |
< |
// calculate the switching info. from the splines |
| 240 |
< |
|
| 241 |
< |
RealType s = 0.0; |
| 242 |
< |
RealType dsdr = 0.0; |
| 243 |
< |
RealType sp = 0.0; |
| 244 |
< |
RealType dspdr = 0.0; |
| 245 |
< |
|
| 246 |
< |
if (idat.rij < ru) { |
| 247 |
< |
if (idat.rij < rl) { |
| 248 |
< |
s = 1.0; |
| 249 |
< |
dsdr = 0.0; |
| 250 |
< |
} else { |
| 251 |
< |
// we are in the switching region |
| 252 |
< |
|
| 253 |
< |
pair<RealType, RealType> res = mixer.s->getValueAndDerivativeAt(idat.rij); |
| 254 |
< |
s = res.first; |
| 255 |
< |
dsdr = res.second; |
| 256 |
< |
} |
| 257 |
< |
} |
| 258 |
< |
|
| 259 |
< |
if (idat.rij < rup) { |
| 260 |
< |
if (idat.rij < rlp) { |
| 261 |
< |
sp = 1.0; |
| 262 |
< |
dspdr = 0.0; |
| 263 |
< |
} else { |
| 264 |
< |
// we are in the switching region |
| 265 |
< |
|
| 266 |
< |
pair<RealType, RealType> res =mixer.sp->getValueAndDerivativeAt(idat.rij); |
| 267 |
< |
sp = res.first; |
| 268 |
< |
dspdr = res.second; |
| 269 |
< |
} |
| 270 |
< |
} |
| 271 |
< |
|
| 272 |
< |
RealType wi = 2.0*(xi2-yi2)*zi / r3; |
| 273 |
< |
RealType wj = 2.0*(xj2-yj2)*zj / r3; |
| 274 |
< |
RealType w = wi+wj; |
| 275 |
< |
|
| 276 |
< |
|
| 277 |
< |
RealType zif = zi/idat.rij - 0.6; |
| 278 |
< |
RealType zis = zi/idat.rij + 0.8; |
| 279 |
< |
|
| 280 |
< |
RealType zjf = zj/idat.rij - 0.6; |
| 281 |
< |
RealType zjs = zj/idat.rij + 0.8; |
| 282 |
< |
|
| 283 |
< |
RealType wip = zif*zif*zis*zis - w0; |
| 284 |
< |
RealType wjp = zjf*zjf*zjs*zjs - w0; |
| 285 |
< |
RealType wp = wip + wjp; |
| 286 |
< |
|
| 287 |
< |
Vector3d dwi(4.0*xi*zi/r3 - 6.0*xi*zi*(xi2-yi2)/r5, |
| 288 |
< |
- 4.0*yi*zi/r3 - 6.0*yi*zi*(xi2-yi2)/r5, |
| 289 |
< |
2.0*(xi2-yi2)/r3 - 6.0*zi2*(xi2-yi2)/r5); |
| 160 |
> |
StickyInteractionData mixer = (*it).second; |
| 161 |
|
|
| 162 |
< |
Vector3d dwj(4.0*xj*zj/r3 - 6.0*xj*zj*(xj2-yj2)/r5, |
| 163 |
< |
- 4.0*yj*zj/r3 - 6.0*yj*zj*(xj2-yj2)/r5, |
| 164 |
< |
2.0*(xj2-yj2)/r3 - 6.0*zj2*(xj2-yj2)/r5); |
| 165 |
< |
|
| 166 |
< |
RealType uglyi = zif*zif*zis + zif*zis*zis; |
| 167 |
< |
RealType uglyj = zjf*zjf*zjs + zjf*zjs*zjs; |
| 168 |
< |
|
| 169 |
< |
Vector3d dwip(-2.0*xi*zi*uglyi/r3, |
| 170 |
< |
-2.0*yi*zi*uglyi/r3, |
| 300 |
< |
2.0*(1.0/idat.rij - zi2/r3)*uglyi); |
| 301 |
< |
|
| 302 |
< |
Vector3d dwjp(-2.0*xj*zj*uglyj/r3, |
| 303 |
< |
-2.0*yj*zj*uglyj/r3, |
| 304 |
< |
2.0*(1.0/idat.rij - zj2/r3)*uglyj); |
| 305 |
< |
|
| 306 |
< |
Vector3d dwidu(4.0*(yi*zi2 + 0.5*yi*(xi2-yi2))/r3, |
| 307 |
< |
4.0*(xi*zi2 - 0.5*xi*(xi2-yi2))/r3, |
| 308 |
< |
- 8.0*xi*yi*zi/r3); |
| 309 |
< |
|
| 310 |
< |
Vector3d dwjdu(4.0*(yj*zj2 + 0.5*yj*(xj2-yj2))/r3, |
| 311 |
< |
4.0*(xj*zj2 - 0.5*xj*(xj2-yj2))/r3, |
| 312 |
< |
- 8.0*xj*yj*zj/r3); |
| 162 |
> |
RealType w0 = mixer.w0; |
| 163 |
> |
RealType v0 = mixer.v0; |
| 164 |
> |
RealType v0p = mixer.v0p; |
| 165 |
> |
RealType rl = mixer.rl; |
| 166 |
> |
RealType ru = mixer.ru; |
| 167 |
> |
RealType rlp = mixer.rlp; |
| 168 |
> |
RealType rup = mixer.rup; |
| 169 |
> |
RealType rbig = mixer.rbig; |
| 170 |
> |
bool isPower = mixer.isPower; |
| 171 |
|
|
| 172 |
< |
Vector3d dwipdu(2.0*yi*uglyi/idat.rij, |
| 173 |
< |
-2.0*xi*uglyi/idat.rij, |
| 174 |
< |
0.0); |
| 175 |
< |
|
| 176 |
< |
Vector3d dwjpdu(2.0*yj*uglyj/idat.rij, |
| 177 |
< |
-2.0*xj*uglyj/idat.rij, |
| 178 |
< |
0.0); |
| 172 |
> |
if ( *(idat.rij) <= rbig) { |
| 173 |
> |
|
| 174 |
> |
RealType r3 = *(idat.r2) * *(idat.rij); |
| 175 |
> |
RealType r5 = r3 * *(idat.r2); |
| 176 |
> |
|
| 177 |
> |
RotMat3x3d A1trans = idat.A1->transpose(); |
| 178 |
> |
RotMat3x3d A2trans = idat.A2->transpose(); |
| 179 |
> |
|
| 180 |
> |
// rotate the inter-particle separation into the two different |
| 181 |
> |
// body-fixed coordinate systems: |
| 182 |
> |
|
| 183 |
> |
Vector3d ri = *(idat.A1) * *(idat.d); |
| 184 |
> |
|
| 185 |
> |
// negative sign because this is the vector from j to i: |
| 186 |
> |
|
| 187 |
> |
Vector3d rj = - *(idat.A2) * *(idat.d); |
| 188 |
> |
|
| 189 |
> |
RealType xi = ri.x(); |
| 190 |
> |
RealType yi = ri.y(); |
| 191 |
> |
RealType zi = ri.z(); |
| 192 |
> |
|
| 193 |
> |
RealType xj = rj.x(); |
| 194 |
> |
RealType yj = rj.y(); |
| 195 |
> |
RealType zj = rj.z(); |
| 196 |
> |
|
| 197 |
> |
RealType xi2 = xi * xi; |
| 198 |
> |
RealType yi2 = yi * yi; |
| 199 |
> |
RealType zi2 = zi * zi; |
| 200 |
> |
|
| 201 |
> |
RealType xj2 = xj * xj; |
| 202 |
> |
RealType yj2 = yj * yj; |
| 203 |
> |
RealType zj2 = zj * zj; |
| 204 |
> |
|
| 205 |
> |
// calculate the switching info. from the splines |
| 206 |
> |
|
| 207 |
> |
RealType s = 0.0; |
| 208 |
> |
RealType dsdr = 0.0; |
| 209 |
> |
RealType sp = 0.0; |
| 210 |
> |
RealType dspdr = 0.0; |
| 211 |
> |
|
| 212 |
> |
if ( *(idat.rij) < ru) { |
| 213 |
> |
if ( *(idat.rij) < rl) { |
| 214 |
> |
s = 1.0; |
| 215 |
> |
dsdr = 0.0; |
| 216 |
> |
} else { |
| 217 |
> |
// we are in the switching region |
| 218 |
> |
|
| 219 |
> |
pair<RealType, RealType> res = mixer.s->getValueAndDerivativeAt(*(idat.rij)); |
| 220 |
> |
s = res.first; |
| 221 |
> |
dsdr = res.second; |
| 222 |
> |
} |
| 223 |
> |
} |
| 224 |
> |
|
| 225 |
> |
if (*(idat.rij) < rup) { |
| 226 |
> |
if ( *(idat.rij) < rlp) { |
| 227 |
> |
sp = 1.0; |
| 228 |
> |
dspdr = 0.0; |
| 229 |
> |
} else { |
| 230 |
> |
// we are in the switching region |
| 231 |
> |
|
| 232 |
> |
pair<RealType, RealType> res =mixer.sp->getValueAndDerivativeAt( *(idat.rij)); |
| 233 |
> |
sp = res.first; |
| 234 |
> |
dspdr = res.second; |
| 235 |
> |
} |
| 236 |
> |
} |
| 237 |
> |
|
| 238 |
> |
RealType wi = 2.0*(xi2-yi2)*zi / r3; |
| 239 |
> |
RealType wj = 2.0*(xj2-yj2)*zj / r3; |
| 240 |
> |
RealType w = wi+wj; |
| 241 |
> |
|
| 242 |
> |
|
| 243 |
> |
RealType zif = zi/ *(idat.rij) - 0.6; |
| 244 |
> |
RealType zis = zi/ *(idat.rij) + 0.8; |
| 245 |
> |
|
| 246 |
> |
RealType zjf = zj/ *(idat.rij) - 0.6; |
| 247 |
> |
RealType zjs = zj/ *(idat.rij) + 0.8; |
| 248 |
> |
|
| 249 |
> |
RealType wip = zif*zif*zis*zis - w0; |
| 250 |
> |
RealType wjp = zjf*zjf*zjs*zjs - w0; |
| 251 |
> |
RealType wp = wip + wjp; |
| 252 |
> |
|
| 253 |
> |
Vector3d dwi(4.0*xi*zi/r3 - 6.0*xi*zi*(xi2-yi2)/r5, |
| 254 |
> |
- 4.0*yi*zi/r3 - 6.0*yi*zi*(xi2-yi2)/r5, |
| 255 |
> |
2.0*(xi2-yi2)/r3 - 6.0*zi2*(xi2-yi2)/r5); |
| 256 |
> |
|
| 257 |
> |
Vector3d dwj(4.0*xj*zj/r3 - 6.0*xj*zj*(xj2-yj2)/r5, |
| 258 |
> |
- 4.0*yj*zj/r3 - 6.0*yj*zj*(xj2-yj2)/r5, |
| 259 |
> |
2.0*(xj2-yj2)/r3 - 6.0*zj2*(xj2-yj2)/r5); |
| 260 |
> |
|
| 261 |
> |
RealType uglyi = zif*zif*zis + zif*zis*zis; |
| 262 |
> |
RealType uglyj = zjf*zjf*zjs + zjf*zjs*zjs; |
| 263 |
|
|
| 264 |
< |
if (isPower) { |
| 265 |
< |
RealType frac1 = 0.25; |
| 266 |
< |
RealType frac2 = 0.75; |
| 267 |
< |
RealType wi2 = wi*wi; |
| 268 |
< |
RealType wj2 = wj*wj; |
| 269 |
< |
// sticky power has no w' function: |
| 270 |
< |
w = frac1 * wi * wi2 + frac2*wi + frac1*wj*wj2 + frac2*wj + v0p; |
| 271 |
< |
wp = 0.0; |
| 272 |
< |
dwi = frac1*3.0*wi2*dwi + frac2*dwi; |
| 273 |
< |
dwj = frac1*3.0*wj2*dwi + frac2*dwi; |
| 274 |
< |
dwip = V3Zero; |
| 275 |
< |
dwjp = V3Zero; |
| 276 |
< |
dwidu = frac1*3.0*wi2*dwidu + frac2*dwidu; |
| 277 |
< |
dwidu = frac1*3.0*wj2*dwjdu + frac2*dwjdu; |
| 278 |
< |
dwipdu = V3Zero; |
| 279 |
< |
dwjpdu = V3Zero; |
| 280 |
< |
sp = 0.0; |
| 281 |
< |
dspdr = 0.0; |
| 264 |
> |
Vector3d dwip(-2.0*xi*zi*uglyi/r3, |
| 265 |
> |
-2.0*yi*zi*uglyi/r3, |
| 266 |
> |
2.0*(1.0/ *(idat.rij) - zi2/r3)*uglyi); |
| 267 |
> |
|
| 268 |
> |
Vector3d dwjp(-2.0*xj*zj*uglyj/r3, |
| 269 |
> |
-2.0*yj*zj*uglyj/r3, |
| 270 |
> |
2.0*(1.0/ *(idat.rij) - zj2/r3)*uglyj); |
| 271 |
> |
|
| 272 |
> |
Vector3d dwidu(4.0*(yi*zi2 + 0.5*yi*(xi2-yi2))/r3, |
| 273 |
> |
4.0*(xi*zi2 - 0.5*xi*(xi2-yi2))/r3, |
| 274 |
> |
- 8.0*xi*yi*zi/r3); |
| 275 |
> |
|
| 276 |
> |
Vector3d dwjdu(4.0*(yj*zj2 + 0.5*yj*(xj2-yj2))/r3, |
| 277 |
> |
4.0*(xj*zj2 - 0.5*xj*(xj2-yj2))/r3, |
| 278 |
> |
- 8.0*xj*yj*zj/r3); |
| 279 |
> |
|
| 280 |
> |
Vector3d dwipdu(2.0*yi*uglyi/ *(idat.rij) , |
| 281 |
> |
-2.0*xi*uglyi/ *(idat.rij) , |
| 282 |
> |
0.0); |
| 283 |
> |
|
| 284 |
> |
Vector3d dwjpdu(2.0*yj*uglyj/ *(idat.rij) , |
| 285 |
> |
-2.0*xj*uglyj/ *(idat.rij) , |
| 286 |
> |
0.0); |
| 287 |
> |
|
| 288 |
> |
if (isPower) { |
| 289 |
> |
RealType frac1 = 0.25; |
| 290 |
> |
RealType frac2 = 0.75; |
| 291 |
> |
RealType wi2 = wi*wi; |
| 292 |
> |
RealType wj2 = wj*wj; |
| 293 |
> |
// sticky power has no w' function: |
| 294 |
> |
w = frac1 * wi * wi2 + frac2*wi + frac1*wj*wj2 + frac2*wj + v0p; |
| 295 |
> |
wp = 0.0; |
| 296 |
> |
dwi = frac1*RealType(3.0)*wi2*dwi + frac2*dwi; |
| 297 |
> |
dwj = frac1*RealType(3.0)*wj2*dwi + frac2*dwi; |
| 298 |
> |
dwip = V3Zero; |
| 299 |
> |
dwjp = V3Zero; |
| 300 |
> |
dwidu = frac1*RealType(3.0)*wi2*dwidu + frac2*dwidu; |
| 301 |
> |
dwidu = frac1*RealType(3.0)*wj2*dwjdu + frac2*dwjdu; |
| 302 |
> |
dwipdu = V3Zero; |
| 303 |
> |
dwjpdu = V3Zero; |
| 304 |
> |
sp = 0.0; |
| 305 |
> |
dspdr = 0.0; |
| 306 |
> |
} |
| 307 |
> |
|
| 308 |
> |
*(idat.vpair) += RealType(0.5)*(v0*s*w + v0p*sp*wp); |
| 309 |
> |
(*(idat.pot))[HYDROGENBONDING_FAMILY] += RealType(0.5)*(v0*s*w + v0p*sp*wp)* *(idat.sw) ; |
| 310 |
> |
|
| 311 |
> |
// do the torques first since they are easy: |
| 312 |
> |
// remember that these are still in the body-fixed axes |
| 313 |
> |
|
| 314 |
> |
Vector3d ti = RealType(0.5)* *(idat.sw) *(v0*s*dwidu + v0p*sp*dwipdu); |
| 315 |
> |
Vector3d tj = RealType(0.5)* *(idat.sw) *(v0*s*dwjdu + v0p*sp*dwjpdu); |
| 316 |
> |
|
| 317 |
> |
// go back to lab frame using transpose of rotation matrix: |
| 318 |
> |
|
| 319 |
> |
*(idat.t1) += A1trans * ti; |
| 320 |
> |
*(idat.t2) += A2trans * tj; |
| 321 |
> |
|
| 322 |
> |
// Now, on to the forces: |
| 323 |
> |
|
| 324 |
> |
// first rotate the i terms back into the lab frame: |
| 325 |
> |
|
| 326 |
> |
Vector3d radcomi = (v0 * s * dwi + v0p * sp * dwip) * *(idat.sw); |
| 327 |
> |
Vector3d radcomj = (v0 * s * dwj + v0p * sp * dwjp) * *(idat.sw); |
| 328 |
> |
|
| 329 |
> |
Vector3d fii = A1trans * radcomi; |
| 330 |
> |
Vector3d fjj = A2trans * radcomj; |
| 331 |
> |
|
| 332 |
> |
// now assemble these with the radial-only terms: |
| 333 |
> |
|
| 334 |
> |
*(idat.f1) += RealType(0.5) * ((v0*dsdr*w + v0p*dspdr*wp) * *(idat.d) / |
| 335 |
> |
*(idat.rij) + fii - fjj); |
| 336 |
> |
|
| 337 |
|
} |
| 341 |
– |
|
| 342 |
– |
idat.vpair += 0.5*(v0*s*w + v0p*sp*wp); |
| 343 |
– |
idat.pot += 0.5*(v0*s*w + v0p*sp*wp)*idat.sw; |
| 344 |
– |
|
| 345 |
– |
// do the torques first since they are easy: |
| 346 |
– |
// remember that these are still in the body-fixed axes |
| 347 |
– |
|
| 348 |
– |
Vector3d ti = 0.5*idat.sw*(v0*s*dwidu + v0p*sp*dwipdu); |
| 349 |
– |
Vector3d tj = 0.5*idat.sw*(v0*s*dwjdu + v0p*sp*dwjpdu); |
| 350 |
– |
|
| 351 |
– |
// go back to lab frame using transpose of rotation matrix: |
| 352 |
– |
|
| 353 |
– |
idat.t1 += A1trans * ti; |
| 354 |
– |
idat.t2 += A2trans * tj; |
| 355 |
– |
|
| 356 |
– |
// Now, on to the forces: |
| 357 |
– |
|
| 358 |
– |
// first rotate the i terms back into the lab frame: |
| 359 |
– |
|
| 360 |
– |
Vector3d radcomi = (v0 * s * dwi + v0p * sp * dwip) * idat.sw; |
| 361 |
– |
Vector3d radcomj = (v0 * s * dwj + v0p * sp * dwjp) * idat.sw; |
| 362 |
– |
|
| 363 |
– |
Vector3d fii = A1trans * radcomi; |
| 364 |
– |
Vector3d fjj = A2trans * radcomj; |
| 365 |
– |
|
| 366 |
– |
// now assemble these with the radial-only terms: |
| 367 |
– |
|
| 368 |
– |
idat.f1 += 0.5 * ((v0*dsdr*w + v0p*dspdr*wp) * idat.d / |
| 369 |
– |
idat.rij + fii - fjj); |
| 370 |
– |
|
| 338 |
|
} |
| 372 |
– |
|
| 373 |
– |
return; |
| 339 |
|
|
| 340 |
+ |
return; |
| 341 |
|
} |
| 342 |
+ |
|
| 343 |
+ |
RealType Sticky::getSuggestedCutoffRadius(pair<AtomType*, AtomType*> atypes) { |
| 344 |
+ |
if (!initialized_) initialize(); |
| 345 |
+ |
map<pair<AtomType*, AtomType*>, StickyInteractionData>::iterator it; |
| 346 |
+ |
it = MixingMap.find(atypes); |
| 347 |
+ |
if (it == MixingMap.end()) |
| 348 |
+ |
return 0.0; |
| 349 |
+ |
else { |
| 350 |
+ |
StickyInteractionData mixer = (*it).second; |
| 351 |
+ |
return mixer.rbig; |
| 352 |
+ |
} |
| 353 |
+ |
} |
| 354 |
|
} |
