laplaceFilter.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
     \\/     M anipulation  |
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License
    This file is part of OpenFOAM.

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    the Free Software Foundation, either version 3 of the License, or
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#include "laplaceFilter.H"
#include <OpenFOAM/addToRunTimeSelectionTable.H>
#include <finiteVolume/calculatedFvPatchFields.H>
#include <finiteVolume/fvm.H>
#include <finiteVolume/fvc.H>

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
    defineTypeNameAndDebug(laplaceFilter, 0);
    addToRunTimeSelectionTable(LESfilter, laplaceFilter, dictionary);
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::laplaceFilter::laplaceFilter(const fvMesh& mesh, scalar widthCoeff)
:
    LESfilter(mesh),
    widthCoeff_(widthCoeff),
    coeff_
    (
        IOobject
        (
            "laplaceFilterCoeff",
            mesh.time().timeName(),
            mesh
        ),
        mesh,
        dimensionedScalar("zero", dimLength*dimLength, 0),
        calculatedFvPatchScalarField::typeName
    )
{
    coeff_.internalField() = pow(mesh.V(), 2.0/3.0)/widthCoeff_;
}


Foam::laplaceFilter::laplaceFilter(const fvMesh& mesh, const dictionary& bd)
:
    LESfilter(mesh),
    widthCoeff_(readScalar(bd.subDict(type() + "Coeffs").lookup("widthCoeff"))),
    coeff_
    (
        IOobject
        (
            "laplaceFilterCoeff",
            mesh.time().timeName(),
            mesh
        ),
        mesh,
        dimensionedScalar("zero", dimLength*dimLength, 0),
        calculatedFvPatchScalarField::typeName
    )
{
    coeff_.internalField() = pow(mesh.V(), 2.0/3.0)/widthCoeff_;
}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

void Foam::laplaceFilter::read(const dictionary& bd)
{
    bd.subDict(type() + "Coeffs").lookup("widthCoeff") >> widthCoeff_;
}


// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //

Foam::tmp<Foam::volScalarField> Foam::laplaceFilter::operator()
(
    const tmp<volScalarField>& unFilteredField
) const
{
    tmp<volScalarField> filteredField =
        unFilteredField() + fvc::laplacian(coeff_, unFilteredField());

    unFilteredField.clear();

    return filteredField;
}


Foam::tmp<Foam::volVectorField> Foam::laplaceFilter::operator()
(
    const tmp<volVectorField>& unFilteredField
) const
{
    tmp<volVectorField> filteredField =
        unFilteredField() + fvc::laplacian(coeff_, unFilteredField());

    unFilteredField.clear();

    return filteredField;
}


Foam::tmp<Foam::volSymmTensorField> Foam::laplaceFilter::operator()
(
    const tmp<volSymmTensorField>& unFilteredField
) const
{
    tmp<volSymmTensorField> filteredField =
        unFilteredField() + fvc::laplacian(coeff_, unFilteredField());

    unFilteredField.clear();

    return filteredField;
}


Foam::tmp<Foam::volTensorField> Foam::laplaceFilter::operator()
(
    const tmp<volTensorField>& unFilteredField
) const
{
    tmp<volTensorField> filteredField =
        unFilteredField() + fvc::laplacian(coeff_, unFilteredField());

    unFilteredField.clear();

    return filteredField;
}


// ************************ vim: set sw=4 sts=4 et: ************************ //