DarcyForchheimer.H

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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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Class
    Foam::porosityModels::DarcyForchheimer
 
Description
    Darcy-Forchheimer law porosity model, given by:
 
        \f[
            S = - (\mu d + \frac{\rho |U|}{2} f) U
        \f]
 
    where
    \vartable
        d        | Darcy coefficient [1/m2]
        f        | Forchheimer coefficient [1/m]
    \endvartable
 
    Since negative Darcy/Forchheimer parameters are invalid, they can be used
    to specify a multiplier (of the max component).
 
    The orientation of the porous region is defined with the same notation as
    a coordinate system, but only a Cartesian coordinate system is valid.
 
SourceFiles
    DarcyForchheimer.C
    DarcyForchheimerTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_porosityModels_DarcyForchheimer_H
#define Foam_porosityModels_DarcyForchheimer_H
 
#include "porosityModel.H"
#include "dimensionedTensor.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace porosityModels
{
 
/*---------------------------------------------------------------------------*\
                      Class DarcyForchheimer Declaration
\*---------------------------------------------------------------------------*/
 
class DarcyForchheimer
:
    public porosityModel
{
    // Private Data
 
        //- Darcy coefficient XYZ components (user-supplied) [1/m2]
        dimensionedVector dXYZ_;
 
        //- Forchheimer coefficient XYZ components (user-supplied) [1/m]
        dimensionedVector fXYZ_;
 
        //- Darcy coefficient - converted from dXYZ [1/m2]
        List<tensorField> D_;
 
        //- Forchheimer coefficient - converted from fXYZ [1/m]
        List<tensorField> F_;
 
        //- Name of density field
        word rhoName_;
 
        //- Name of dynamic viscosity field
        word muName_;
 
        //- Name of kinematic viscosity field
        word nuName_;
 
 
    // Private Member Functions
 
        //- Apply
        template<class RhoFieldType>
        void apply
        (
            scalarField& Udiag,
            vectorField& Usource,
            const scalarField& V,
            const RhoFieldType& rho,
            const scalarField& mu,
            const vectorField& U
        ) const;
 
        //- Apply
        template<class RhoFieldType>
        void apply
        (
            tensorField& AU,
            const RhoFieldType& rho,
            const scalarField& mu,
            const vectorField& U
        ) const;
 
        //- No copy construct
        DarcyForchheimer(const DarcyForchheimer&) = delete;
 
        //- No copy assignment
        void operator=(const DarcyForchheimer&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("DarcyForchheimer");
 
    //- Constructor
    DarcyForchheimer
    (
        const word& name,
        const word& modelType,
        const fvMesh& mesh,
        const dictionary& dict,
        const wordRe& cellZoneName
    );
 
    //- Destructor
    virtual ~DarcyForchheimer() = 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 "DarcyForchheimerTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //