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particleI.H
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particleI.H
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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2018 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "polyMesh.H"
#include "Time.H"
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
void Foam::particle::stationaryTetGeometry
(
vector& centre,
vector& base,
vector& vertex1,
vector& vertex2
) const
{
const triFace triIs(currentTetIndices().faceTriIs(mesh_));
const vectorField& ccs = mesh_.cellCentres();
const pointField& pts = mesh_.points();
centre = ccs[celli_];
base = pts[triIs[0]];
vertex1 = pts[triIs[1]];
vertex2 = pts[triIs[2]];
}
inline Foam::barycentricTensor Foam::particle::stationaryTetTransform() const
{
vector centre, base, vertex1, vertex2;
stationaryTetGeometry(centre, base, vertex1, vertex2);
return barycentricTensor(centre, base, vertex1, vertex2);
}
inline void Foam::particle::movingTetGeometry
(
const scalar fraction,
Pair<vector>& centre,
Pair<vector>& base,
Pair<vector>& vertex1,
Pair<vector>& vertex2
) const
{
const triFace triIs(currentTetIndices().faceTriIs(mesh_));
const pointField& ptsOld = mesh_.oldPoints();
const pointField& ptsNew = mesh_.points();
// !!! <-- We would be better off using mesh_.cellCentres() here. However,
// we need to put a mesh_.oldCellCentres() method in for this to work. The
// values obtained from the mesh and those obtained from the cell do not
// necessarily match. See mantis #1993.
const vector ccOld = mesh_.cells()[celli_].centre(ptsOld, mesh_.faces());
const vector ccNew = mesh_.cells()[celli_].centre(ptsNew, mesh_.faces());
// Old and new points and cell centres are not sub-cycled. If we are sub-
// cycling, then we have to account for the timestep change here by
// modifying the fractions that we take of the old and new geometry.
const Pair<scalar> s = stepFractionSpan();
const scalar f0 = s[0] + stepFraction_*s[1], f1 = fraction*s[1];
centre[0] = ccOld + f0*(ccNew - ccOld);
base[0] = ptsOld[triIs[0]] + f0*(ptsNew[triIs[0]] - ptsOld[triIs[0]]);
vertex1[0] = ptsOld[triIs[1]] + f0*(ptsNew[triIs[1]] - ptsOld[triIs[1]]);
vertex2[0] = ptsOld[triIs[2]] + f0*(ptsNew[triIs[2]] - ptsOld[triIs[2]]);
centre[1] = f1*(ccNew - ccOld);
base[1] = f1*(ptsNew[triIs[0]] - ptsOld[triIs[0]]);
vertex1[1] = f1*(ptsNew[triIs[1]] - ptsOld[triIs[1]]);
vertex2[1] = f1*(ptsNew[triIs[2]] - ptsOld[triIs[2]]);
}
inline Foam::Pair<Foam::barycentricTensor> Foam::particle::movingTetTransform
(
const scalar fraction
) const
{
Pair<vector> centre, base, vertex1, vertex2;
movingTetGeometry(fraction, centre, base, vertex1, vertex2);
return
Pair<barycentricTensor>
(
barycentricTensor(centre[0], base[0], vertex1[0], vertex2[0]),
barycentricTensor(centre[1], base[1], vertex1[1], vertex2[1])
);
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
inline Foam::label Foam::particle::getNewParticleID() const
{
label id = particleCount_++;
if (id == labelMax)
{
WarningInFunction
<< "Particle counter has overflowed. This might cause problems"
<< " when reconstructing particle tracks." << endl;
}
return id;
}
inline const Foam::polyMesh& Foam::particle::mesh() const
{
return mesh_;
}
inline const Foam::barycentric& Foam::particle::coordinates() const
{
return coordinates_;
}
inline Foam::label Foam::particle::cell() const
{
return celli_;
}
inline Foam::label Foam::particle::tetFace() const
{
return tetFacei_;
}
inline Foam::label Foam::particle::tetPt() const
{
return tetPti_;
}
inline Foam::label Foam::particle::face() const
{
return facei_;
}
inline Foam::scalar Foam::particle::stepFraction() const
{
return stepFraction_;
}
inline Foam::scalar& Foam::particle::stepFraction()
{
return stepFraction_;
}
inline Foam::label Foam::particle::origProc() const
{
return origProc_;
}
inline Foam::label& Foam::particle::origProc()
{
return origProc_;
}
inline Foam::label Foam::particle::origId() const
{
return origId_;
}
inline Foam::label& Foam::particle::origId()
{
return origId_;
}
inline Foam::Pair<Foam::scalar> Foam::particle::stepFractionSpan() const
{
if (mesh_.time().subCycling())
{
const TimeState& tsNew = mesh_.time();
const TimeState& tsOld = mesh_.time().prevTimeState();
const scalar tFrac =
(
(tsNew.value() - tsNew.deltaTValue())
- (tsOld.value() - tsOld.deltaTValue())
)/tsOld.deltaTValue();
const scalar dtFrac = tsNew.deltaTValue()/tsOld.deltaTValue();
return Pair<scalar>(tFrac, dtFrac);
}
else
{
return Pair<scalar>(0, 1);
}
}
inline Foam::scalar Foam::particle::currentTimeFraction() const
{
const Pair<scalar> s = stepFractionSpan();
return s[0] + stepFraction_*s[1];
}
inline Foam::tetIndices Foam::particle::currentTetIndices() const
{
return tetIndices(celli_, tetFacei_, tetPti_);
}
inline Foam::barycentricTensor Foam::particle::currentTetTransform() const
{
if (mesh_.moving())
{
return movingTetTransform(0)[0];
}
else
{
return stationaryTetTransform();
}
}
inline Foam::vector Foam::particle::normal() const
{
return currentTetIndices().faceTri(mesh_).normal();
}
inline bool Foam::particle::onFace() const
{
return facei_ >= 0;
}
inline bool Foam::particle::onInternalFace() const
{
return onFace() && mesh_.isInternalFace(facei_);
}
inline bool Foam::particle::onBoundaryFace() const
{
return onFace() && !mesh_.isInternalFace(facei_);
}
inline Foam::label Foam::particle::patch() const
{
return onFace() ? mesh_.boundaryMesh().whichPatch(facei_) : -1;
}
inline Foam::vector Foam::particle::position() const
{
return currentTetTransform() & coordinates_;
}
inline void Foam::particle::reset()
{
stepFraction_ = 0;
nBehind_ = 0;
behind_ = 0;
}
void Foam::particle::patchData(vector& normal, vector& displacement) const
{
if (!onBoundaryFace())
{
FatalErrorInFunction
<< "Patch data was requested for a particle that isn't on a patch"
<< exit(FatalError);
}
if (mesh_.moving())
{
Pair<vector> centre, base, vertex1, vertex2;
movingTetGeometry(1, centre, base, vertex1, vertex2);
normal = triPointRef(base[0], vertex1[0], vertex2[0]).normal();
// Interpolate the motion of the three face vertices to the current
// coordinates
displacement =
coordinates_.b()*base[1]
+ coordinates_.c()*vertex1[1]
+ coordinates_.d()*vertex2[1];
}
else
{
vector centre, base, vertex1, vertex2;
stationaryTetGeometry(centre, base, vertex1, vertex2);
normal = triPointRef(base, vertex1, vertex2).normal();
displacement = Zero;
}
}
// ************************************************************************* //