2f4dd4fe27
Using the VolField<Type> partial specialisation of GeometricField<Type, fvPatchField, volMesh> simplifies the code and improves readability.
147 lines
4.2 KiB
C++
147 lines
4.2 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration | Website: https://openfoam.org
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\\ / A nd | Copyright (C) 2020-2022 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::MPLICU
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Description
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Velocity-weighted Multicut Piecewise-Linear Interface Calculation (MPLICU)
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corrected scheme is a surface interpolation scheme for flux calculation in
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advection of a bounded variable, e.g. phase fraction and for interface
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capturing in the volume of fluid (VoF) method.
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The interface is represented by multiple cuts which split each cell to match
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the volume fraction of the phase in the cell. The cut planes are oriented
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according to the point field of the local phase fraction. The phase
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fraction at each cell face - the interpolated value - is then calculated
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from the face area on either side of the cuts.
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Three progressively more complex algorithms are used to ensure the cell
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volume fraction is accurately reproduced:
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-# single cut: cuts all the cell faces regardless the order
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-# multi cut: topological face-edge-face walk which can split cell into
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multiple sub-volumes
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-# tetrahedron cut: decomposes cell into tetrahedrons which are cut
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Additionally the face point velocity values are used to calculate the face
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flux which is likely to be more accurate in the presence of high shear.
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Example:
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\verbatim
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divSchemes
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{
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.
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.
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div(phi,alpha1) Gauss MPLICU;
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.
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.
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}
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\endverbatim
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See also
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Foam::MPLIC
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Foam::PLIC
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Foam::PLICU
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Foam::interfaceCompression
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SourceFiles
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MPLICU.C
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\*---------------------------------------------------------------------------*/
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#ifndef MPLICU_H
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#define MPLICU_H
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#include "MPLIC.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class MPLICU Declaration
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\*---------------------------------------------------------------------------*/
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class MPLICU
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:
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public MPLIC
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{
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public:
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//- Runtime type information
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TypeName("MPLICU");
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// Constructors
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//- Construct from faceFlux and Istream
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MPLICU
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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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MPLIC(mesh, faceFlux, is)
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{}
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// Member Functions
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//- Return the interpolation weighting factors
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virtual tmp<surfaceScalarField> weights
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(
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const VolField<scalar>& vf
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) const
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{
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NotImplemented;
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return tmp<surfaceScalarField>(nullptr);
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}
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//- Return the face-interpolate of the given cell field
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virtual tmp<surfaceScalarField> interpolate
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(
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const VolField<scalar>& vf
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) const;
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// Member Operators
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//- Disallow default bitwise assignment
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void operator=(const MPLICU&) = delete;
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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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