explicitPorositySource.H

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    Copyright (C) 2012-2018 OpenFOAM Foundation
    Copyright (C) 2020 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
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::fv::explicitPorositySource
 
Group
    grpFvOptionsSources
 
Description
    Applies an explicit porosity source to
    the momentum equation within a specified region.
 
    Sources applied to:
    \verbatim
      U         | Velocity                                   [m/s]
    \endverbatim
 
    Required fields:
    \verbatim
      U         | Velocity                                   [m/s]
    \endverbatim
 
Usage
    Minimal example by using \c constant/fvOptions:
    \verbatim
    explicitPorositySource1
    {
        // Mandatory entries (unmodifiable)
        type                 <porosityModelName>;
 
        <porosityModelName>Coeffs
        {
            // Optional entries (runtime modifiable)
            UNames          (<Uname1> <Uname2> ... <UnameN>);
 
            // Conditional optional entries (runtime modifiable)
 
                // when the entry "UNames" is not present
                U           U;
 
            // Mandatory/Optional (inherited) entries
            ...
        }
 
        // Mandatory/Optional (inherited) entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property  | Description                       | Type   | Reqd  | Dflt
      type      | Type name: <porosityModelName>  | word   | yes   | -
      UNames    | Names of operand velocity fields  | wordList | no  | -
      U         | Name of operand velocity field    | word   | no    | U
    \endtable
 
    The inherited entries are elaborated in:
     - \link fvOption.H \endlink
     - \link cellSetOption.H \endlink
 
    Example usage, here employing the Darcy-Forchheimer model:
    \verbatim
    explicitPorositySourceCoeffs
    {
        type            DarcyForchheimer;
 
        DarcyForchheimerCoeffs
        {
            d   d [0 -2 0 0 0 0 0] (5e7 -1000 -1000);
            f   f [0 -1 0 0 0 0 0] (0 0 0);
 
            coordinateSystem
            {
                origin  (0 0 0);
                e1      (0.70710678 0.70710678 0);
                e2      (0 0 1);
            }
        }
    }
    \endverbatim
 
Note
  - The porous region must be selected as a \c cellZone.
 
See also
  - Foam::porosityModel
 
SourceFiles
    explicitPorositySource.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_explicitPorositySource_H
#define Foam_explicitPorositySource_H
 
#include "cellSetOption.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
class porosityModel;
 
namespace fv
{
 
/*---------------------------------------------------------------------------*\
                   Class explicitPorositySource Declaration
\*---------------------------------------------------------------------------*/
 
class explicitPorositySource
:
    public fv::cellSetOption
{
protected:
 
    // Protected Data
 
        //- Run-time selectable porosity model
        autoPtr<porosityModel> porosityPtr_;
 
 
public:
 
    //- Runtime type information
    TypeName("explicitPorositySource");
 
 
    // Constructors
 
        //- Construct from components
        explicitPorositySource
        (
            const word& name,
            const word& modelType,
            const dictionary& dict,
            const fvMesh& mesh
        );
 
        //- No copy construct
        explicitPorositySource(const explicitPorositySource&) = delete;
 
        //- No copy assignment
        void operator=(const explicitPorositySource&) = delete;
 
 
    //- Destructor
    virtual ~explicitPorositySource() = default;
 
 
    // Member Functions
 
        //- Access to the porosityModel
        const porosityModel& model() const noexcept
        {
            return *porosityPtr_;
        }
 
 
        //- Add implicit contribution to momentum equation
        virtual void addSup
        (
            fvMatrix<vector>& eqn,
            const label fieldi
        );
 
        //- Add implicit contribution to compressible momentum equation
        virtual void addSup
        (
            const volScalarField& rho,
            fvMatrix<vector>& eqn,
            const label fieldi
        );
 
        //- Add implicit contribution to phase momentum equation
        virtual void addSup
        (
            const volScalarField& alpha,
            const volScalarField& rho,
            fvMatrix<vector>& eqn,
            const label fieldi
        );
 
 
        //- Read dictionary
        virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //