177 lines
4.7 KiB
C++
177 lines
4.7 KiB
C++
/*---------------------------------------------------------------------------*\
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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) 2015 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::patchDistMethods::Poisson
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Description
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Calculation of approximate distance to nearest patch for all cells and
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boundary by solving Poisson's equation.
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References:
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\verbatim
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D.B. Spalding,
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"Calculation of turbulent heat transfer in cluttered spaces",
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Proc. 10th Int. Heat Transfer Conference, Brighton, UK, (1994).
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E. Fares and W. Schroder,
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"Differential Equation for Approximate Wall Distance",
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Int.J.Numer.Meth., 39:743-762, (2002).
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P.G. Tucker,
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"Differential equation based wall distance computation for DES and
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RANS",
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J.Comp.Phys., Vol. 190, Issue 1, 1 st September, pp. 229-248 (2003)
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\endverbatim
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Example of the wallDist specification in fvSchemes:
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\verbatim
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laplacianSchemes
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{
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.
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.
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laplacian(yPsi) Gauss linear corrected;
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.
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.
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}
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wallDist
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{
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method Poisson;
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}
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\endverbatim
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Also the solver specification for yPsi is required in fvSolution, e.g.
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for simple cases:
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\verbatim
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yPsi
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{
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solver PCG;
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preconditioner DIC;
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tolerance 1e-5;
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relTol 0;
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}
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or for more complex cases:
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yPsi
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{
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solver GAMG;
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smoother GaussSeidel;
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cacheAgglomeration true;
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nCellsInCoarsestLevel 10;
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agglomerator faceAreaPair;
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mergeLevels 1;
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tolerance 1e-5;
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relTol 0;
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}
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\endverbatim
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SeeAlso
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Foam::patchDistMethod::meshWave
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Foam::wallDist
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SourceFiles
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PoissonPatchDistMethod.C
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\*---------------------------------------------------------------------------*/
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#ifndef PoissonPatchDistMethod_H
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#define PoissonPatchDistMethod_H
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#include "patchDistMethod.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace patchDistMethods
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{
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/*---------------------------------------------------------------------------*\
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Class Poisson Declaration
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\*---------------------------------------------------------------------------*/
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class Poisson
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:
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public patchDistMethod
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{
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// Private Member Data
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//- Cache yPsi for moving meshes
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tmp<volScalarField> tyPsi_;
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// Private Member Functions
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//- Disallow default bitwise copy construct
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Poisson(const Poisson&);
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//- Disallow default bitwise assignment
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void operator=(const Poisson&);
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public:
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//- Runtime type information
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TypeName("Poisson");
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// Constructors
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//- Construct from coefficients dictionary, mesh
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// and fixed-value patch set
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Poisson
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(
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const dictionary& dict,
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const fvMesh& mesh,
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const labelHashSet& patchIDs
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);
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//- Construct from mesh and fixed-value patch set
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Poisson
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(
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const fvMesh& mesh,
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const labelHashSet& patchIDs
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);
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// Member Functions
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//- Correct the given distance-to-patch field
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virtual bool correct(volScalarField& y);
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//- Correct the given distance-to-patch and normal-to-patch fields
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virtual bool correct(volScalarField& y, volVectorField& n);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace patchDistMethods
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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