fixedCoeff.H

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    Copyright (C) 2022 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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Class
    Foam::porosityModels::fixedCoeff
 
Description
    Fixed coefficient form of porosity model
 
        \f[
            S = - \rho_ref (\alpha + \beta |U|) U
        \f]
 
    In the case of compressible flow, a value for the reference density is
    required
 
SourceFiles
    fixedCoeff.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_porosityModels_fixedCoeff_H
#define Foam_porosityModels_fixedCoeff_H
 
#include "porosityModel.H"
#include "dimensionedTensor.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace porosityModels
{
 
/*---------------------------------------------------------------------------*\
                          Class fixedCoeff Declaration
\*---------------------------------------------------------------------------*/
 
class fixedCoeff
:
    public porosityModel
{
    // Private Data
 
        //- Alpha coefficient XYZ components (user-supplied) [1/s]
        dimensionedVector alphaXYZ_;
 
        //- Beta coefficient XYZ components (user-supplied) [1/m]
        dimensionedVector betaXYZ_;
 
        //- Model alpha coefficient - converted from alphaXYZ [1/s]
        List<tensorField> alpha_;
 
        //- Model beta coefficient - converted from betaXYZ [1/m]
        List<tensorField> beta_;
 
 
    // Private Member Functions
 
        //- Apply
        void apply
        (
            scalarField& Udiag,
            vectorField& Usource,
            const scalarField& V,
            const vectorField& U,
            const scalar rho
        ) const;
 
        //- Apply
        void apply
        (
            tensorField& AU,
            const vectorField& U,
            const scalar rho
        ) const;
 
        //- No copy construct
        fixedCoeff(const fixedCoeff&) = delete;
 
        //- No copy assignment
        void operator=(const fixedCoeff&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("fixedCoeff");
 
    //- Constructor
    fixedCoeff
    (
        const word& name,
        const word& modelType,
        const fvMesh& mesh,
        const dictionary& dict,
        const wordRe& cellZoneName
    );
 
    //- Destructor
    virtual ~fixedCoeff() = default;
 
 
    // Member Functions
 
        //- Transform the model data wrt mesh changes
        virtual void calcTransformModelData();
 
        //- Calculate the porosity force
        virtual void calcForce
        (
            const volVectorField& U,
            const volScalarField& rho,
            const volScalarField& mu,
            vectorField& force
        ) const;
 
        //- Add resistance
        virtual void correct(fvVectorMatrix& UEqn) const;
 
        //- Add resistance
        virtual void correct
        (
            fvVectorMatrix& UEqn,
            const volScalarField& rho,
            const volScalarField& mu
        ) const;
 
        //- Add resistance
        virtual void correct
        (
            const fvVectorMatrix& UEqn,
            volTensorField& AU
        ) const;
 
 
    // I-O
 
        //- Write
        bool writeData(Ostream& os) const;
};
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace porosityModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //