UOprocess.H

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/*---------------------------------------------------------------------------*\
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License
    This file is part of OpenFOAM.

    OpenFOAM is free software: you can redistribute it and/or modify it
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    the Free Software Foundation, either version 3 of the License, or
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Class
    Foam::UOprocess

Description
    Random UO process.

SourceFiles
    UOprocess.C

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

#ifndef UOprocess_H
#define UOprocess_H

#include "complexFields.H"
#include "scalar.H"
#include "Random.H"

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

namespace Foam
{

class Kmesh;
class dictionary;

/*---------------------------------------------------------------------------*\
                           Class UOprocess Declaration
\*---------------------------------------------------------------------------*/

class UOprocess
{
    // Private Data

        Random GaussGen;

        const Kmesh& Mesh;
        const scalar DeltaT, RootDeltaT;
        complexVectorField UOfield;

        scalar Alpha;
        scalar Sigma;
        scalar Kupper;
        scalar Klower;
        scalar Scale;


    // Private Member Functions

        complexVector WeinerProcess();


public:

    // Constructors

        //- Construct from wavenumber mesh and timestep
        UOprocess
        (
            const Kmesh& kmesh,
            const scalar deltaT,
            const dictionary&
        );


    // Member Functions

        const complexVectorField& newField();
};


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

} // End namespace Foam

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

#endif

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