randomise.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2008-2010 OpenCFD Ltd.
     \\/     M anipulation  |
-------------------------------------------------------------------------------
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::calcTypes::randomise

Description
    Adds a random component to a field, with a given perturbation magnitude.

SourceFiles
    randomise.C

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

#ifndef randomise_H
#define randomise_H

#include <foamCalcFunctions/calcType.H>
#include <OpenFOAM/Random.H>

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

namespace Foam
{

namespace calcTypes
{

/*---------------------------------------------------------------------------*\
                         Class randomise Declaration
\*---------------------------------------------------------------------------*/

class randomise
:
    public calcType
{
    // Private Member Functions

        //- Disallow default bitwise copy construct
        randomise(const randomise&);

        //- Disallow default bitwise assignment
        void operator=(const randomise&);


protected:

    // Member Functions

        // Calculation routines

            //- Initialise - typically setting static variables,
            //  e.g. command line arguments
            virtual void init();

            //- Pre-time loop calculations
            virtual void preCalc
            (
                const argList& args,
                const Time& runTime,
                const fvMesh& mesh
            );

            //- Time loop calculations
            virtual void calc
            (
                const argList& args,
                const Time& runTime,
                const fvMesh& mesh
            );


        // I-O

            //- Write component fields
            template<class Type>
            void writeRandomField
            (
                const IOobject& header,
                const scalar pertMag,
                Random& rand,
                const fvMesh& mesh,
                bool& processed
            );


public:

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


    // Constructors

        //- Construct null
        randomise();


    // Destructor

        virtual ~randomise();
};


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

} // End namespace calcTypes
} // End namespace Foam

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

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

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

#endif

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