powerLaw.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2012-2017 OpenFOAM Foundation
    Copyright (C) 2022 OpenCFD Ltd.
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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.
 
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    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
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Class
    Foam::porosityModels::powerLaw
 
Description
    Power law porosity model, given by:
 
        \f[
            S = - \rho C_0 |U|^{(C_1 - 1)} U
        \f]
 
    where
    \vartable
        C_0      | model linear coefficient
        C_1      | model exponent coefficient
    \endvartable
 
SourceFiles
    powerLaw.C
    powerLawTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_porosityModels_powerLaw_H
#define Foam_porosityModels_powerLaw_H
 
#include "porosityModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace porosityModels
{
 
/*---------------------------------------------------------------------------*\
                      Class powerLaw Declaration
\*---------------------------------------------------------------------------*/
 
class powerLaw
:
    public porosityModel
{
    // Private Data
 
        //- C0 coefficient
        scalar C0_;
 
        //- C1 coefficient
        scalar C1_;
 
        //- Name of density field
        word rhoName_;
 
 
    // Private Member Functions
 
        //- Apply resistance
        template<class RhoFieldType>
        void apply
        (
            scalarField& Udiag,
            const scalarField& V,
            const RhoFieldType& rho,
            const vectorField& U
        ) const;
 
        //- Apply resistance
        template<class RhoFieldType>
        void apply
        (
            tensorField& AU,
            const RhoFieldType& rho,
            const vectorField& U
        ) const;
 
        //- No copy construct
        powerLaw(const powerLaw&) = delete;
 
        //- No copy assignment
        void operator=(const powerLaw&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("powerLaw");
 
    //- Constructor
    powerLaw
    (
        const word& name,
        const word& modelType,
        const fvMesh& mesh,
        const dictionary& dict,
        const wordRe& cellZoneName
    );
 
    //- Destructor
    virtual ~powerLaw() = 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
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "powerLawTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //