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Clean-up of Gauss div and least squares grad

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This commit is contained in:
Hrvoje Jasak 2015-07-31 10:30:46 +01:00
parent 55921ceaa8
commit ba8eba2eb0
7 changed files with 333 additions and 50 deletions
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4
src/finiteVolume/finiteVolume/divSchemes/gaussDivScheme/gaussDivScheme.C
View file

@ -79,7 +79,7 @@ tmp
{
FatalErrorIn
(
"tmp<BlockLduSystem> fvmUDiv\n"
"tmp<BlockLduSystem> gaussDivScheme<Type>::fvmUDiv\n"
"(\n"
" GeometricField<Type, fvPatchField, volMesh>&"
")\n"
@ -109,7 +109,7 @@ tmp
{
FatalErrorIn
(
"tmp<BlockLduSystem> fvmUDiv\n"
"tmp<BlockLduSystem> gaussDivScheme<Type>::fvmUDiv\n"
"(\n"
" const surfaceScalarField& flux"
" const GeometricField<Type, fvPatchField, volMesh>&"

1
src/finiteVolume/finiteVolume/divSchemes/gaussDivScheme/gaussDivSchemes.C
View file

@ -24,6 +24,7 @@ License
\*---------------------------------------------------------------------------*/
#include "gaussDivScheme.H"
#include "vectorGaussDivScheme.H"
#include "fvMesh.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

222
src/finiteVolume/finiteVolume/divSchemes/gaussDivScheme/vectorGaussDivScheme.C Normal file
View file

@ -0,0 +1,222 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | foam-extend: Open Source CFD
\\ / O peration | Version: 3.2
\\ / A nd | Web: http://www.foam-extend.org
\\/ M anipulation | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
This file is part of foam-extend.
foam-extend 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.
foam-extend 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
Description
Specialisation of gaussDivScheme for vectors. Needed for implicit fvmDiv
operator for block coupled systems.
\*---------------------------------------------------------------------------*/
#include "vectorGaussDivScheme.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace fv
{
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
template<>
tmp<BlockLduSystem<vector, scalar> > gaussDivScheme<vector>::fvmUDiv
(
const GeometricField<vector, fvPatchField, volMesh>& vf
) const
{
// Get weights
surfaceScalarField weights = this->tinterpScheme_().weights(vf);
const fvMesh& mesh = vf.mesh();
tmp<BlockLduSystem<vector, scalar> > tbs
(
new BlockLduSystem<vector, scalar>(mesh)
);
BlockLduSystem<vector, scalar>& bs = tbs();
scalarField& source = bs.source();
// Grab ldu parts of block matrix as linear always
CoeffField<vector>::linearTypeField& d = bs.diag().asLinear();
CoeffField<vector>::linearTypeField& u = bs.upper().asLinear();
CoeffField<vector>::linearTypeField& l = bs.lower().asLinear();
// Internal field
const vectorField& SfIn = mesh.Sf().internalField();
const scalarField& wIn = weights.internalField();
l = -wIn*SfIn;
u = l + SfIn;
bs.negSumDiag();
// Boundary contributions
forAll(vf.boundaryField(), patchI)
{
const fvPatchVectorField& pf = vf.boundaryField()[patchI];
const fvPatch& patch = pf.patch();
const vectorField& Sf = patch.Sf();
const fvsPatchScalarField& pw = weights.boundaryField()[patchI];
const unallocLabelList& fc = patch.faceCells();
const vectorField internalCoeffs(pf.valueInternalCoeffs(pw));
// Diag contribution
forAll(pf, faceI)
{
d[fc[faceI]] += cmptMultiply(internalCoeffs[faceI], Sf[faceI]);
}
if (patch.coupled())
{
CoeffField<vector>::linearTypeField& pcoupleUpper =
bs.coupleUpper()[patchI].asLinear();
CoeffField<vector>::linearTypeField& pcoupleLower =
bs.coupleLower()[patchI].asLinear();
const vectorField pcl = -pw*Sf;
const vectorField pcu = pcl + Sf;
// Coupling contributions
pcoupleLower -= pcl;
pcoupleUpper -= pcu;
}
else
{
const vectorField boundaryCoeffs(pf.valueBoundaryCoeffs(pw));
// Boundary contribution
forAll(pf, faceI)
{
source[fc[faceI]] -= boundaryCoeffs[faceI] & Sf[faceI];
}
}
}
// Interpolation schemes with corrections not accounted for
return tbs;
}
template<>
tmp<BlockLduSystem<vector, scalar> > gaussDivScheme<vector>::fvmUDiv
(
const surfaceScalarField& flux,
const GeometricField<vector, fvPatchField, volMesh>& vf
) const
{
// Get weights
surfaceScalarField weights = this->tinterpScheme_().weights(vf);
const fvMesh& mesh = vf.mesh();
tmp<BlockLduSystem<vector, scalar> > tbs
(
new BlockLduSystem<vector, scalar>(mesh)
);
BlockLduSystem<vector, scalar>& bs = tbs();
scalarField& source = bs.source();
// Grab ldu parts of block matrix as linear always
CoeffField<vector>::linearTypeField& d = bs.diag().asLinear();
CoeffField<vector>::linearTypeField& u = bs.upper().asLinear();
CoeffField<vector>::linearTypeField& l = bs.lower().asLinear();
// Internal field
const vectorField& SfIn = mesh.Sf().internalField();
const scalarField& wIn = weights.internalField();
const scalarField& fluxIn = flux.internalField();
l = -wIn*fluxIn*SfIn;
u = l + fluxIn*SfIn;
bs.negSumDiag();
// Boundary contributions
forAll(vf.boundaryField(), patchI)
{
const fvPatchVectorField& pf = vf.boundaryField()[patchI];
const fvPatch& patch = pf.patch();
const vectorField& Sf = patch.Sf();
const fvsPatchScalarField& pw = weights.boundaryField()[patchI];
const unallocLabelList& fc = patch.faceCells();
const scalarField& pFlux = flux.boundaryField()[patchI];
const vectorField internalCoeffs(pf.valueInternalCoeffs(pw));
// Diag contribution
forAll(pf, faceI)
{
d[fc[faceI]] += cmptMultiply
(
internalCoeffs[faceI],
pFlux[faceI]*Sf[faceI]
);
}
if (patch.coupled())
{
CoeffField<vector>::linearTypeField& pcoupleUpper =
bs.coupleUpper()[patchI].asLinear();
CoeffField<vector>::linearTypeField& pcoupleLower =
bs.coupleLower()[patchI].asLinear();
const vectorField pcl = -pw*pFlux*Sf;
const vectorField pcu = pcl + pFlux*Sf;
// Coupling contributions
pcoupleLower -= pcl;
pcoupleUpper -= pcu;
}
else
{
const vectorField boundaryCoeffs(pf.valueBoundaryCoeffs(pw));
// Boundary contribution
forAll(pf, faceI)
{
source[fc[faceI]] -=
(
boundaryCoeffs[faceI] & (pFlux[faceI]*Sf[faceI])
);
}
}
}
// Interpolation schemes with corrections not accounted for
return tbs;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace fv
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// ************************************************************************* //

1
src/finiteVolume/finiteVolume/gradSchemes/gaussGrad/gaussGrads.C
View file

@ -27,6 +27,7 @@ Description
#include "fvMesh.H"
#include "gaussGrad.H"
#include "scalarGaussGrad.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

22
src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/leastSquaresGrad.C
View file

@ -94,15 +94,26 @@ leastSquaresGrad<Type>::grad
const unallocLabelList& own = mesh.owner();
const unallocLabelList& nei = mesh.neighbour();
// Get access to internal field
const Field<Type>& vsfIn = vsf.internalField();
Field<GradType>& lsGradIn = lsGrad.internalField();
const vectorField& ownLsIn = ownLs.internalField();
const vectorField& neiLsIn = neiLs.internalField();
register label ownFaceI, neiFaceI;
forAll (own, facei)
{
register label ownFaceI = own[facei];
register label neiFaceI = nei[facei];
ownFaceI = own[facei];
neiFaceI = nei[facei];
Type deltaVsf = vsf[neiFaceI] - vsf[ownFaceI];
Type deltaVsf = vsfIn[neiFaceI] - vsfIn[ownFaceI];
lsGrad[ownFaceI] += ownLs[facei]*deltaVsf;
lsGrad[neiFaceI] -= neiLs[facei]*deltaVsf;
lsGradIn[ownFaceI] += ownLsIn[facei]*deltaVsf;
lsGradIn[neiFaceI] -= neiLsIn[facei]*deltaVsf;
}
// Boundary faces
@ -138,7 +149,6 @@ leastSquaresGrad<Type>::grad
}
}
lsGrad.correctBoundaryConditions();
gaussGrad<Type>::correctBoundaryConditions(vsf, lsGrad);

50
src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/leastSquaresVectors.C
View file

@ -134,12 +134,23 @@ void Foam::leastSquaresVectors::makeLeastSquaresVectors() const
// Better version of d-vectors: Zeljko Tukovic, 25/Apr/2010
const vectorField pd = p.delta();
if (p.coupled())
{
forAll (pd, pFaceI)
{
const vector& d = pd[pFaceI];
dd[fc[pFaceI]] += (1.0/magSqr(d))*sqr(d);
}
}
else
{
forAll (pd, pFaceI)
{
const vector& d = pd[pFaceI];
dd[fc[pFaceI]] += (1.0/magSqr(d))*sqr(d);
}
}
}
// For easy access of neighbour coupled patch field needed for
// lsN vectors on implicitly coupled boundaries. VV, 18/June/2014
@ -221,8 +232,6 @@ void Foam::leastSquaresVectors::makeLeastSquaresVectors() const
}
}
# if 0
// Coefficient sign correction on least squares vectors
// The sign of the coefficient must be positive to ensure correct
// behaviour in coupled systems. This is checked by evaluating
@ -408,7 +417,42 @@ void Foam::leastSquaresVectors::makeLeastSquaresVectors() const
}
}
#endif
// Manual check of least squares vectors
vectorField sumLsq(mesh().nCells(), vector::zero);
vectorField sumSf(mesh().nCells(), vector::zero);
const vectorField& sfIn = mesh().Sf().internalField();
// Least squares vectors on internal faces
forAll (owner, faceI)
{
sumLsq[owner[faceI]] += lsPIn[faceI];
sumLsq[neighbour[faceI]] += lsNIn[faceI];
sumSf[owner[faceI]] += sfIn[faceI];
sumSf[neighbour[faceI]] -= sfIn[faceI];
}
// Least squares vectors on boundary faces
forAll (lsP.boundaryField(), patchI)
{
const vectorField& patchLsP = lsP.boundaryField()[patchI];
const vectorField& patchSf = mesh().Sf().boundaryField()[patchI];
const unallocLabelList& fc = mesh().boundary()[patchI].faceCells();
forAll (fc, pFaceI)
{
//sumLsq[fc[pFaceI]] += 0.5*patchLsP[pFaceI]; // works!!!
sumLsq[fc[pFaceI]] += patchLsP[pFaceI];
sumSf[fc[pFaceI]] += patchSf[pFaceI];
}
}
Info<< "sumLsq min = " << min(sumLsq) << " max = " << max(sumLsq) << endl;
Info<< "sumSf min = " << min(sumSf) << " max = " << max(sumSf) << endl;
if (debug)
{

23
src/finiteVolume/finiteVolume/gradSchemes/leastSquaresGrad/scalarLeastSquaresGrad.C
View file

@ -90,13 +90,19 @@ tmp<BlockLduSystem<vector, vector> > leastSquaresGrad<scalar>::fvmGrad
const surfaceVectorField& ownLs = lsv.pVectors();
const surfaceVectorField& neiLs = lsv.nVectors();
// Internal field
const vectorField& ownLsIn = ownLs.internalField();
const vectorField& neiLsIn = neiLs.internalField();
register label owner, neighbour;
forAll (nei, faceI)
{
register label owner = own[faceI];
register label neighbour = nei[faceI];
owner = own[faceI];
neighbour = nei[faceI];
u[faceI] = cellVIn[owner]*ownLs[faceI];
l[faceI] = cellVIn[neighbour]*neiLs[faceI];
u[faceI] = cellVIn[owner]*ownLsIn[faceI];
l[faceI] = cellVIn[neighbour]*neiLsIn[faceI];
// Caution - this is NOT negSumDiag(). VV, 17/July/2014.
d[owner] -= u[faceI];
@ -133,11 +139,8 @@ tmp<BlockLduSystem<vector, vector> > leastSquaresGrad<scalar>::fvmGrad
// Coupling and diagonal contributions
forAll (pf, faceI)
{
const vector upper = cellVIn[fc[faceI]]*pownLs[faceI];
const vector lower = cellVInNei[faceI]*pneiLs[faceI];
pcoupleUpper[faceI] -= upper;
pcoupleLower[faceI] -= lower;
pcoupleUpper[faceI] -= cellVIn[fc[faceI]]*pownLs[faceI];
pcoupleLower[faceI] -= cellVInNei[faceI]*pneiLs[faceI];
}
}
else
@ -149,7 +152,9 @@ tmp<BlockLduSystem<vector, vector> > leastSquaresGrad<scalar>::fvmGrad
forAll (pf, faceI)
{
const label cellI = fc[faceI];
d[cellI] += cellVIn[cellI]*pownLs[faceI]*internalCoeffs[faceI];
source[cellI] -= cellVIn[cellI]*pownLs[faceI]*
boundaryCoeffs[faceI];
}