adaptiveLinear.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2012-2015 OpenFOAM Foundation
     \\/     M anipulation  |
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License
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Class
    Foam::adaptiveLinear

Description
    Produces a linear ramp which adapts its gradient to changes in
    endTime and deltaT to always arrive at the relaxationEnd value at the end of
    the run

SourceFiles
    adaptiveLinear.C

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

#ifndef adaptiveLinear_H
#define adaptiveLinear_H

#include "relaxationModel.H"

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

namespace Foam
{

/*---------------------------------------------------------------------------*\
                           Class adaptiveLinear Declaration
\*---------------------------------------------------------------------------*/

class adaptiveLinear
:
    public relaxationModel
{

private:

    // Private data

        //- Relaxation coefficient at the start of the iteration sequence.
        scalar relaxationStart_;

        //- Relaxation coefficient at the end of the iteration sequence.
        scalar relaxationEnd_;

        //- Store the time when the last request was made for relaxation,
        //  prevents multiple calls to relaxation in a timestep from
        //  incrementing the value
        scalar lastTimeValue_;

        //- Current relaxation value
        scalar relaxation_;


public:

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

    // Constructors

        //- Construct from components
        adaptiveLinear
        (
            const dictionary& relaxationDict,
            const Time& runTime
        );


    //- Destructor
    virtual ~adaptiveLinear()
    {}


    // Member Functions

        //- Return the current relaxation coefficient
        virtual scalar relaxation();
};


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

} // End namespace Foam

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

#endif

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