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CoBlended: New surfaceInterpolation scheme which blends any two schemes based on the local Courant number
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Henry
@ -243,6 +243,7 @@ $(schemes)/harmonic/harmonic.C
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$(schemes)/fixedBlended/fixedBlended.C
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$(schemes)/localBlended/localBlended.C
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$(schemes)/limiterBlended/limiterBlended.C
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$(schemes)/CoBlended/CoBlended.C
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$(schemes)/localMax/localMax.C
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$(schemes)/localMin/localMin.C
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@ -0,0 +1,36 @@
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2012 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "fvMesh.H"
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#include "CoBlended.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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makeSurfaceInterpolationScheme(CoBlended);
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}
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// ************************************************************************* //
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@ -0,0 +1,275 @@
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2012 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::CoBlended
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Description
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Two-scheme Courant number based blending differencing scheme.
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Similar to localBlended but uses a blending factor computed from the
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face-based Courant number and the alpha factor supplied:
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weight = 1 - Co/alpha
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The weight applies to the first scheme and 1-factor to the second scheme.
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SourceFiles
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CoBlended.C
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\*---------------------------------------------------------------------------*/
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#ifndef CoBlended_H
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#define CoBlended_H
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#include "surfaceInterpolationScheme.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class CoBlended Declaration
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\*---------------------------------------------------------------------------*/
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template<class Type>
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class CoBlended
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:
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public surfaceInterpolationScheme<Type>
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{
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// Private data
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const scalar alpha_;
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// Private Member Functions
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//- Scheme 1
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tmp<surfaceInterpolationScheme<Type> > tScheme1_;
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//- Scheme 2
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tmp<surfaceInterpolationScheme<Type> > tScheme2_;
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//- The face-flux used to compute the face Courant number
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const surfaceScalarField& faceFlux_;
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//- Disallow default bitwise copy construct
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CoBlended(const CoBlended&);
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//- Disallow default bitwise assignment
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void operator=(const CoBlended&);
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public:
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//- Runtime type information
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TypeName("CoBlended");
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// Constructors
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//- Construct from mesh and Istream.
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// The name of the flux field is read from the Istream and looked-up
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// from the mesh objectRegistry
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CoBlended
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(
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const fvMesh& mesh,
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Istream& is
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)
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:
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surfaceInterpolationScheme<Type>(mesh),
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alpha_(readScalar(is)),
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tScheme1_
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(
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surfaceInterpolationScheme<Type>::New(mesh, is)
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),
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tScheme2_
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(
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surfaceInterpolationScheme<Type>::New(mesh, is)
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),
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faceFlux_
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(
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mesh.lookupObject<surfaceScalarField>
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(
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word(is)
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)
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)
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{
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if (alpha_ <= 0 )
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{
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FatalIOErrorIn("CoBlended(const fvMesh&, Istream&)", is)
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<< "coefficient = " << alpha_
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<< " should be > 0"
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<< exit(FatalIOError);
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}
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}
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//- Construct from mesh, faceFlux and Istream
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CoBlended
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(
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const fvMesh& mesh,
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const surfaceScalarField& faceFlux,
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Istream& is
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)
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:
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surfaceInterpolationScheme<Type>(mesh),
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alpha_(readScalar(is)),
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tScheme1_
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(
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surfaceInterpolationScheme<Type>::New(mesh, faceFlux, is)
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),
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tScheme2_
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(
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surfaceInterpolationScheme<Type>::New(mesh, faceFlux, is)
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),
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faceFlux_(faceFlux)
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{
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if (alpha_ <= 0)
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{
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FatalIOErrorIn("CoBlended(const fvMesh&, Istream&)", is)
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<< "coefficient = " << alpha_
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<< " should be > 0"
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<< exit(FatalIOError);
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}
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}
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// Member Functions
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//- Return the face-based Courant number blending factor
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tmp<surfaceScalarField> blendingFactor() const
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{
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const fvMesh& mesh = faceFlux_.mesh();
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return
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(
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max
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(
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scalar(1)
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- mesh.time().deltaT()*mesh.deltaCoeffs()*faceFlux_
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/(mesh.magSf()*alpha_),
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scalar(0)
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)
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);
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}
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//- Return the interpolation weighting factors
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tmp<surfaceScalarField>
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weights
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(
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const GeometricField<Type, fvPatchField, volMesh>& vf
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) const
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{
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surfaceScalarField bf(blendingFactor());
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return
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bf*tScheme1_().weights(vf)
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+ (scalar(1.0) - bf)*tScheme2_().weights(vf);
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}
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//- Return the face-interpolate of the given cell field
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// with explicit correction
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tmp<GeometricField<Type, fvsPatchField, surfaceMesh> >
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interpolate
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(
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const GeometricField<Type, fvPatchField, volMesh>& vf
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) const
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{
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surfaceScalarField bf(blendingFactor());
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return
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bf*tScheme1_().interpolate(vf)
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+ (scalar(1.0) - bf)*tScheme2_().interpolate(vf);
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}
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//- Return true if this scheme uses an explicit correction
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virtual bool corrected() const
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{
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return tScheme1_().corrected() || tScheme2_().corrected();
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}
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//- Return the explicit correction to the face-interpolate
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// for the given field
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virtual tmp<GeometricField<Type, fvsPatchField, surfaceMesh> >
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correction
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(
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const GeometricField<Type, fvPatchField, volMesh>& vf
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) const
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{
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surfaceScalarField bf(blendingFactor());
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if (tScheme1_().corrected())
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{
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if (tScheme2_().corrected())
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{
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return
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(
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bf
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* tScheme1_().correction(vf)
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+ (scalar(1.0) - bf)
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* tScheme2_().correction(vf)
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);
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}
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else
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{
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return
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(
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bf
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* tScheme1_().correction(vf)
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);
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}
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}
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else if (tScheme2_().corrected())
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{
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return
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(
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(scalar(1.0) - bf)
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* tScheme2_().correction(vf)
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);
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}
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else
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{
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return tmp<GeometricField<Type, fvsPatchField, surfaceMesh> >
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(
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NULL
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);
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}
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}
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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