rampHoldFall.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::rampHoldFall
 
Description
    Piecewise linear function with a ramp from a start value to a plateaux
    value, holding at this, then a linear fall to an end value.
 
SourceFiles
    rampHoldFall.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef rampHoldFall_H
#define rampHoldFall_H
 
#include "relaxationModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class rampHoldFall Declaration
\*---------------------------------------------------------------------------*/
 
class rampHoldFall
:
    public relaxationModel
{
 
private:
 
    // Private data
 
        //- Relaxation coefficient at the start of the ramp
        scalar rampStartRelaxation_;
 
        //- Relaxation coefficient for the hold portion
        scalar holdRelaxation_;
 
        //- Relaxation coefficient at the end of the fall
        scalar fallEndRelaxation_;
 
        //- Fraction through the run where the ramp ends and the hold starts
        scalar rampEndFraction_;
 
        //- Fraction through the run where the hold ends and the fall starts
        scalar fallStartFraction_;
 
        //- Gradient in ramp portion, normalised against time
        scalar rampGradient_;
 
        //- Gradient in fall portion, normalised against time
        scalar fallGradient_;
 
public:
 
    //- Runtime type information
    TypeName("rampHoldFall");
 
    // Constructors
 
        //- Construct from components
        rampHoldFall
        (
            const dictionary& relaxationDict,
            const Time& runTime
        );
 
 
    //- Destructor
    virtual ~rampHoldFall()
    {}
 
 
    // Member Functions
 
        //- Return the current relaxation coefficient
        virtual scalar relaxation();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //