writeRandomField.C

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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     \\/     M anipulation  |
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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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template <class Type>
void Foam::calcTypes::randomise::writeRandomField
(
    const IOobject& header,
    const scalar pertMag,
    Random& rand,
    const fvMesh& mesh,
    bool& processed
)
{
    typedef GeometricField<Type, fvPatchField, volMesh> fieldType;

    if (header.headerClassName() == fieldType::typeName)
    {
        Info<< "    Reading " << header.name() << endl;
        fieldType field(header, mesh);

        forAll(field, cellI)
        {
            Type rndPert;
            rand.randomise(rndPert);
            rndPert = 2.0*rndPert - pTraits<Type>::one;
            rndPert /= mag(rndPert);
            field[cellI] += pertMag*rndPert;
        }

        fieldType randomisedField
        (
            IOobject
            (
                header.name() + "Random",
                mesh.time().timeName(),
                mesh,
                IOobject::NO_READ
            ),
            field
        );

        Info<< "    Writing " << header.name() << "Random" << endl;
        randomisedField.write();

        processed = true;
    }
}

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