void LangevinHullForceManager::postCalculation(){
int nTriangles, thisFacet;
RealType thisArea;
vector<Triangle> sMesh;
Triangle thisTriangle;
vector<Triangle>::iterator face;
vector<StuntDouble*> vertexSDs;
vector<StuntDouble*>::iterator vertex;
Vector3d unitNormal, centroid, facetVel;
Vector3d langevinForce, vertexForce;
Vector3d extPressure, randomForce, dragForce;
Mat3x3d hydroTensor, S;
vector<Vector3d> randNums;
// Compute surface Mesh
surfaceMesh_->computeHull(localSites_);
// Get number of surface stunt doubles
sMesh = surfaceMesh_->getMesh();
nTriangles = sMesh.size();
if (doThermalCoupling_) {
// Generate all of the necessary random forces
randNums = genTriangleForces(nTriangles, variance_);
}
// Loop over the mesh faces
thisFacet = 0;
for (face = sMesh.begin(); face != sMesh.end(); ++face){
thisTriangle = *face;
vertexSDs = thisTriangle.getVertices();
thisArea = thisTriangle.getArea();
unitNormal = thisTriangle.getUnitNormal();
centroid = thisTriangle.getCentroid();
facetVel = thisTriangle.getFacetVelocity();
langevinForce = V3Zero;
if (doPressureCoupling_) {
extPressure = -unitNormal * (targetPressure_ * thisArea) /
PhysicalConstants::energyConvert;
langevinForce += extPressure;
}
if (doThermalCoupling_) {
hydroTensor = thisTriangle.computeHydrodynamicTensor(viscosity_);
hydroTensor *= PhysicalConstants::viscoConvert;
CholeskyDecomposition(hydroTensor, S);
randomForce = S * randNums[thisFacet++];
dragForce = -hydroTensor * facetVel;
langevinForce += randomForce + dragForce;
}
// Apply triangle force to stuntdouble vertices
for (vertex = vertexSDs.begin(); vertex != vertexSDs.end(); ++vertex){
if ((*vertex) != NULL){
vertexForce = langevinForce / RealType(3.0);
(*vertex)->addFrc(vertexForce);
}
}
}
veloMunge->removeComDrift();
veloMunge->removeAngularDrift();
Snapshot* currSnapshot = info_->getSnapshotManager()->getCurrentSnapshot();
currSnapshot->setVolume(surfaceMesh_->getVolume());
currSnapshot->setHullVolume(surfaceMesh_->getVolume());
ForceManager::postCalculation();
}
