| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / 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 | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| 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 | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| // ************************************************************************* // | |