/usr/include/freefoam/finiteVolume/outletStabilised.H is in libfreefoam-dev 0.1.0+dfsg-1build1.
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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/>.
Class
Foam::outletStabilised
Description
Outlet-stabilised interpolation scheme which applies upwind differencing
to the faces of the cells adjacent to outlets.
This is particularly useful to stabilise the velocity at entrainment
boundaries for LES cases using linear or other centred differencing
schemes.
SourceFiles
outletStabilised.C
\*---------------------------------------------------------------------------*/
#ifndef outletStabilised_H
#define outletStabilised_H
#include <finiteVolume/surfaceInterpolationScheme.H>
#include <finiteVolume/skewCorrectionVectors.H>
#include <finiteVolume/linear.H>
#include <finiteVolume/gaussGrad.H>
#include <finiteVolume/mixedFvPatchField.H>
#include <finiteVolume/directionMixedFvPatchField.H>
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class outletStabilised Declaration
\*---------------------------------------------------------------------------*/
template<class Type>
class outletStabilised
:
public surfaceInterpolationScheme<Type>
{
// Private member data
const surfaceScalarField& faceFlux_;
tmp<surfaceInterpolationScheme<Type> > tScheme_;
// Private Member Functions
//- Disallow default bitwise copy construct
outletStabilised(const outletStabilised&);
//- Disallow default bitwise assignment
void operator=(const outletStabilised&);
public:
//- Runtime type information
TypeName("outletStabilised");
// Constructors
//- Construct from mesh and Istream
outletStabilised
(
const fvMesh& mesh,
Istream& is
)
:
surfaceInterpolationScheme<Type>(mesh),
faceFlux_
(
mesh.lookupObject<surfaceScalarField>
(
word(is)
)
),
tScheme_
(
surfaceInterpolationScheme<Type>::New(mesh, faceFlux_, is)
)
{}
//- Construct from mesh, faceFlux and Istream
outletStabilised
(
const fvMesh& mesh,
const surfaceScalarField& faceFlux,
Istream& is
)
:
surfaceInterpolationScheme<Type>(mesh),
faceFlux_(faceFlux),
tScheme_
(
surfaceInterpolationScheme<Type>::New(mesh, faceFlux, is)
)
{}
// Member Functions
//- Return the interpolation weighting factors
tmp<surfaceScalarField> weights
(
const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
tmp<surfaceScalarField> tw = tScheme_().weights(vf);
surfaceScalarField& w = tw();
const fvMesh& mesh_ = this->mesh();
const cellList& cells = mesh_.cells();
forAll(vf.boundaryField(), patchi)
{
if
(
isA<zeroGradientFvPatchField<Type> >
(vf.boundaryField()[patchi])
|| isA<mixedFvPatchField<Type> >(vf.boundaryField()[patchi])
|| isA<directionMixedFvPatchField<Type> >
(vf.boundaryField()[patchi])
)
{
const labelList& pFaceCells =
mesh_.boundary()[patchi].faceCells();
forAll(pFaceCells, pFacei)
{
const cell& pFaceCell = cells[pFaceCells[pFacei]];
forAll(pFaceCell, fi)
{
label facei = pFaceCell[fi];
if (mesh_.isInternalFace(facei))
{
// Apply upwind differencing
w[facei] = pos(faceFlux_[facei]);
}
}
}
}
}
return tw;
}
//- Return true if this scheme uses an explicit correction
virtual bool corrected() const
{
return tScheme_().corrected();
}
//- Return the explicit correction to the face-interpolate
// set to zero on the near-boundary faces where upwinf is applied
virtual tmp<GeometricField<Type, fvsPatchField, surfaceMesh> >
correction
(
const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
if (tScheme_().corrected())
{
tmp<GeometricField<Type, fvsPatchField, surfaceMesh> > tcorr =
tScheme_().correction(vf);
GeometricField<Type, fvsPatchField, surfaceMesh>& corr = tcorr();
const fvMesh& mesh_ = this->mesh();
const cellList& cells = mesh_.cells();
forAll(vf.boundaryField(), patchi)
{
if
(
isA<zeroGradientFvPatchField<Type> >
(vf.boundaryField()[patchi])
|| isA<mixedFvPatchField<Type> >
(vf.boundaryField()[patchi])
)
{
const labelList& pFaceCells =
mesh_.boundary()[patchi].faceCells();
forAll(pFaceCells, pFacei)
{
const cell& pFaceCell = cells[pFaceCells[pFacei]];
forAll(pFaceCell, fi)
{
label facei = pFaceCell[fi];
if (mesh_.isInternalFace(facei))
{
// Remove correction
corr[facei] = pTraits<Type>::zero;
}
}
}
}
}
return tcorr;
}
else
{
return
tmp<GeometricField<Type, fvsPatchField, surfaceMesh> >(NULL);
}
}
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************ vim: set sw=4 sts=4 et: ************************ //
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