inletOutletFaPatchField.H

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/*---------------------------------------------------------------------------*\
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-------------------------------------------------------------------------------
    Copyright (C) 2016-2017 Wikki Ltd
    Copyright (C) 2019 OpenCFD Ltd.
-------------------------------------------------------------------------------
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::inletOutletFaPatchField

Group
    grpOutletBoundaryConditions

Description
    This boundary condition provides a generic outflow condition, with
    specified inflow for the case of return flow.

Usage
    \table
        Property     | Description             | Required    | Default value
        phi          | Flux field name         | no          | phi
        inletValue   | Inlet value for reverse flow | yes    |
        value        | initial field value          | optional |
    \endtable

    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        type            inletOutlet;
        phi             phi;
        inletValue      uniform 0;
        value           uniform 0;
    }
    \endverbatim

    The mode of operation is determined by the sign of the flux across the
    patch edges.

Note
    Sign conventions:
    - Positive flux (out of domain): apply zero-gradient condition
    - Negative flux (into domain): apply the "inletValue" fixed-value

See also
    Foam::mixedFaPatchField
    Foam::zeroGradientFaPatchField
    Foam::outletInletFaPatchField

SourceFiles
    inletOutletFaPatchField.C

\*---------------------------------------------------------------------------*/

#ifndef Foam_inletOutletFaPatchField_H
#define Foam_inletOutletFaPatchField_H

#include "mixedFaPatchField.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

/*---------------------------------------------------------------------------*\
                   Class inletOutletFaPatchField Declaration
\*---------------------------------------------------------------------------*/

template<class Type>
class inletOutletFaPatchField
:
    public mixedFaPatchField<Type>
{
protected:

    // Protected Data

        //- Name of flux field
        word phiName_;


public:

    //- Runtime type information
    TypeName("inletOutlet");


    // Constructors

        //- Construct from patch and internal field
        inletOutletFaPatchField
        (
            const faPatch&,
            const DimensionedField<Type, areaMesh>&
        );

        //- Construct from patch, internal field and dictionary
        inletOutletFaPatchField
        (
            const faPatch&,
            const DimensionedField<Type, areaMesh>&,
            const dictionary&
        );

        //- Construct by mapping given inletOutletFaPatchField onto a new patch
        inletOutletFaPatchField
        (
            const inletOutletFaPatchField<Type>&,
            const faPatch&,
            const DimensionedField<Type, areaMesh>&,
            const faPatchFieldMapper&
        );

        //- Construct as copy
        inletOutletFaPatchField
        (
            const inletOutletFaPatchField<Type>&
        );

        //- Construct as copy setting internal field reference
        inletOutletFaPatchField
        (
            const inletOutletFaPatchField<Type>&,
            const DimensionedField<Type, areaMesh>&
        );

        //- Return clone
        virtual tmp<faPatchField<Type>> clone() const
        {
            return faPatchField<Type>::Clone(*this);
        }

        //- Clone with an internal field reference
        virtual tmp<faPatchField<Type>> clone
        (
            const DimensionedField<Type, areaMesh>& iF
        ) const
        {
            return faPatchField<Type>::Clone(*this, iF);
        }


    //- Destructor
    virtual ~inletOutletFaPatchField() = default;


    // Member Functions

        //- Update the coefficients associated with the patch field
        virtual void updateCoeffs();

        //- Write includes "value" entry
        virtual void write(Ostream&) const;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#ifdef NoRepository
    #include "inletOutletFaPatchField.C"
#endif

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //