/usr/include/freefoam/autoMesh/ExactParticle.C is in libfreefoam-dev 0.1.0+dfsg-1build1.
This file is owned by root:root, with mode 0o644.
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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
\\/ 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 <autoMesh/ExactParticle.H>
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
template<class ParticleType>
template<class TrackingData>
Foam::label Foam::ExactParticle<ParticleType>::track
(
const vector& endPosition,
TrackingData& td
)
{
this->facei_ = -1;
// Tracks to endPosition or stop on boundary
while (!this->onBoundary() && this->stepFraction_ < 1.0 - SMALL)
{
this->stepFraction_ +=
trackToFace(endPosition, td)
*(1.0 - this->stepFraction_);
}
return this->facei_;
}
template<class ParticleType>
Foam::label Foam::ExactParticle<ParticleType>::track
(
const vector& endPosition
)
{
int dummyTd;
return track(endPosition, dummyTd);
}
template<class ParticleType>
template<class TrackingData>
Foam::scalar Foam::ExactParticle<ParticleType>::trackToFace
(
const vector& endPosition,
TrackingData& td
)
{
const polyMesh& mesh = this->cloud().pMesh();
const labelList& cFaces = mesh.cells()[this->celli_];
point intersection(vector::zero);
scalar trackFraction = VGREAT;
label hitFacei = -1;
const vector vec = endPosition-this->position_;
forAll(cFaces, i)
{
label facei = cFaces[i];
if (facei != this->face())
{
pointHit inter = mesh.faces()[facei].intersection
(
this->position_,
vec,
mesh.faceCentres()[facei],
mesh.points(),
intersection::HALF_RAY
);
if (inter.hit() && inter.distance() < trackFraction)
{
trackFraction = inter.distance();
hitFacei = facei;
intersection = inter.hitPoint();
}
}
}
if (hitFacei == -1)
{
// Did not find any intersection. Fall back to original approximate
// algorithm
return Particle<ParticleType>::trackToFace
(
endPosition,
td
);
}
if (trackFraction >= (1.0-SMALL))
{
// Nearest intersection beyond endPosition so we hit endPosition.
trackFraction = 1.0;
this->position_ = endPosition;
this->facei_ = -1;
return 1.0;
}
else
{
this->position_ = intersection;
this->facei_ = hitFacei;
}
// Normal situation (trackFraction 0..1). Straight copy
// of Particle::trackToFace.
bool internalFace = this->cloud().internalFace(this->facei_);
// change cell
if (internalFace) // Internal face
{
if (this->celli_ == mesh.faceOwner()[this->facei_])
{
this->celli_ = mesh.faceNeighbour()[this->facei_];
}
else if (this->celli_ == mesh.faceNeighbour()[this->facei_])
{
this->celli_ = mesh.faceOwner()[this->facei_];
}
else
{
FatalErrorIn
(
"ExactParticle::trackToFace"
"(const vector&, TrackingData&)"
)<< "addressing failure" << nl
<< abort(FatalError);
}
}
else
{
ParticleType& p = static_cast<ParticleType&>(*this);
// Soft-sphere algorithm ignores the boundary
if (p.softImpact())
{
trackFraction = 1.0;
this->position_ = endPosition;
}
label patchi = this->patch(this->facei_);
const polyPatch& patch = mesh.boundaryMesh()[patchi];
if (isA<wedgePolyPatch>(patch))
{
p.hitWedgePatch
(
static_cast<const wedgePolyPatch&>(patch), td
);
}
else if (isA<symmetryPolyPatch>(patch))
{
p.hitSymmetryPatch
(
static_cast<const symmetryPolyPatch&>(patch), td
);
}
else if (isA<cyclicPolyPatch>(patch))
{
p.hitCyclicPatch
(
static_cast<const cyclicPolyPatch&>(patch), td
);
}
else if (isA<processorPolyPatch>(patch))
{
p.hitProcessorPatch
(
static_cast<const processorPolyPatch&>(patch), td
);
}
else if (isA<wallPolyPatch>(patch))
{
p.hitWallPatch
(
static_cast<const wallPolyPatch&>(patch), td
);
}
else if (isA<polyPatch>(patch))
{
p.hitPatch
(
static_cast<const polyPatch&>(patch), td
);
}
else
{
FatalErrorIn
(
"ExactParticle::trackToFace"
"(const vector& endPosition, scalar& trackFraction)"
)<< "patch type " << patch.type() << " not suported" << nl
<< abort(FatalError);
}
}
// If the trackFraction = 0 something went wrong.
// Either the particle is flipping back and forth across a face perhaps
// due to velocity interpolation errors or it is in a "hole" in the mesh
// caused by face warpage.
// In both cases resolve the positional ambiguity by moving the particle
// slightly towards the cell-centre.
if (trackFraction < SMALL)
{
this->position_ +=
1.0e-6*(mesh.cellCentres()[this->celli_] - this->position_);
}
return trackFraction;
}
template<class ParticleType>
Foam::scalar Foam::ExactParticle<ParticleType>::trackToFace
(
const vector& endPosition
)
{
int dummyTd;
return trackToFace(endPosition, dummyTd);
}
template<class ParticleType>
Foam::Ostream& Foam::operator<<
(
Ostream& os,
const ExactParticle<ParticleType>& p
)
{
return operator<<(os, static_cast<const Particle<ParticleType>&>(p));
}
// ************************ vim: set sw=4 sts=4 et: ************************ //
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