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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2020-2026 OpenFOAM Foundation
\\/ 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::MPLIC
Description
Multicut Piecewise-Linear Interface Calculation (MPLIC) corrected scheme is
a surface interpolation scheme for flux calculation in advection of a
bounded variable, e.g. phase fraction and for interface capturing in the
volume of fluid (VoF) method.
The interface is represented by multiple cuts which split each cell to match
the volume fraction of the phase in the cell. The cut planes are oriented
according to the point field of the local phase fraction. The phase
fraction at each cell face - the interpolated value - is then calculated
from the face area on either side of the cuts.
Three progressively more complex algorithms are used to ensure the cell
volume fraction is accurately reproduced:
-# single cut: cuts all the cell faces regardless the order
-# multi cut: topological face-edge-face walk which can split cell into
multiple sub-volumes
-# tetrahedron cut: decomposes cell into tetrahedrons which are cut
Example:
\verbatim
divSchemes
{
.
.
div(phi,alpha) Gauss MPLIC;
.
.
}
\endverbatim
See also
Foam::MPLICU
Foam::PLIC
Foam::PLICU
Foam::interfaceCompression
SourceFiles
MPLIC.C
\*---------------------------------------------------------------------------*/
#ifndef MPLIC_H
#define MPLIC_H
#include "surfaceInterpolationScheme.H"
#include "DynamicList.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class MPLIC Declaration
\*---------------------------------------------------------------------------*/
class MPLIC
:
public surfaceInterpolationScheme<scalar>
{
protected:
// Private Data
const surfaceScalarField& phi_;
// Protected Member Functions
//- Set alphaPhi for the faces of the given cell
void setCellAlphaf
(
const label celli,
const scalarField& phi,
scalarField& alphaf,
boolList& correctedFaces,
const DynamicList<scalar>& cellAlphaf,
const fvMesh& mesh
) const;
//- Return alpha interpolation
tmp<surfaceScalarField> surfaceAlpha
(
const volScalarField& alpha,
const surfaceScalarField& phi,
scalarField& splicedTvff,
const bool unweighted,
const scalar tol,
const bool isMPLIC = true
) const;
public:
//- Runtime type information
TypeName("MPLIC");
// Constructors
//- Construct from faceFlux and Istream
MPLIC
(
const fvMesh& mesh,
const surfaceScalarField& faceFlux,
Istream& is
)
:
surfaceInterpolationScheme<scalar>(mesh),
phi_(faceFlux)
{}
// Member Functions
//- Return the interpolation weighting factors
virtual tmp<surfaceScalarField> weights
(
const VolField<scalar>&
) const
{
NotImplemented;
return tmp<surfaceScalarField>(nullptr);
}
//- Return the face-interpolate of the given cell field
virtual tmp<surfaceScalarField> interpolate
(
const VolField<scalar>& vf
) const;
// Member Operators
//- Disallow default bitwise assignment
void operator=(const MPLIC&) = delete;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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