fixedValueConstraint.H

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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
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Class
    Foam::fv::fixedValueConstraint
 
Description
    Constrain the field values within a specified region.
 
Usage
    For example to set the turbulence properties within a porous region:
    \verbatim
    porosityTurbulence
    {
        type            fixedValueConstraint;
 
        select          cellZone;
        cellZone        porosity;
 
        fieldValues
        {
            k           1;
            epsilon     150;
        }
    }
    \endverbatim
 
SourceFiles
    fixedValueConstraint.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef fixedValueConstraint_H
#define fixedValueConstraint_H
 
#include "fvConstraint.H"
#include "fvCellSet.H"
#include "unknownTypeFunction1.H"
#include "HashPtrTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace fv
{
 
/*---------------------------------------------------------------------------*\
                    Class fixedValueConstraint Declaration
\*---------------------------------------------------------------------------*/
 
class fixedValueConstraint
:
    public fvConstraint
{
    // Private Member Data
 
        //- The set of cells the fvConstraint applies to
        fvCellSet set_;
 
        //- Field values
        HashPtrTable<unknownTypeFunction1> fieldValues_;
 
        //- Fraction of the constraint to apply. Facilitates ramping, or
        //  pulsing, or deactivation after a time. Should take a value between
        //  0 and 1. Defaults to 1 (i.e., apply all of the constraint).
        autoPtr<Function1<scalar>> fraction_;
 
 
    // Private Member Functions
 
        //- Non-virtual read
        void readCoeffs();
 
        //- Set value on a field
        template<class Type>
        inline bool constrainType
        (
            fvMatrix<Type>& eqn,
            const word& fieldName
        ) const;
 
 
public:
 
    //- Runtime type information
    TypeName("fixedValueConstraint");
 
 
    // Constructors
 
        //- Construct from components
        fixedValueConstraint
        (
            const word& name,
            const word& modelType,
            const fvMesh& mesh,
            const dictionary& dict
        );
 
 
    // Member Functions
 
        //- Return the list of fields constrained by the fvConstraint
        virtual wordList constrainedFields() const;
 
        //- Add a constraint to an equation
        FOR_ALL_FIELD_TYPES(DEFINE_FV_CONSTRAINT_CONSTRAIN);
 
        //- Update for mesh motion
        virtual bool movePoints();
 
        //- Update topology using the given map
        virtual void topoChange(const polyTopoChangeMap&);
 
        //- Update from another mesh using the given map
        virtual void mapMesh(const polyMeshMap&);
 
        //- Redistribute or update using the given distribution map
        virtual void distribute(const polyDistributionMap&);
 
        //- Read source dictionary
        virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //