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cosineWallDamping.C 2.88 KiB
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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2015 OpenFOAM Foundation
     \\/     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/>.

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

#include "cosineWallDamping.H"
#include "phasePair.H"
#include "surfaceInterpolate.H"
#include "addToRunTimeSelectionTable.H"

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

namespace Foam
{
namespace wallDampingModels
{
    defineTypeNameAndDebug(cosine, 0);
    addToRunTimeSelectionTable
    (
        wallDampingModel,
        cosine,
        dictionary
    );
}
}


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

Foam::tmp<Foam::volScalarField>
Foam::wallDampingModels::cosine::limiter() const
{
    return
    (
        0.5*
        (
            1
          - cos
            (
                constant::mathematical::pi
               *min(yWall()/(Cd_*pair_.dispersed().d()), scalar(1))
            )
        )
    );
}


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

Foam::wallDampingModels::cosine::cosine
(
    const dictionary& dict,
    const phasePair& pair
)
:
    wallDampingModel(dict, pair),
    Cd_("Cd", dimless, dict)
{}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

Foam::wallDampingModels::cosine::~cosine()
{}


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

Foam::tmp<Foam::volScalarField>
Foam::wallDampingModels::cosine::damp
(
    const tmp<volScalarField>& F
) const
{
    return limiter()*F;
}


Foam::tmp<Foam::volVectorField>
Foam::wallDampingModels::cosine::damp
(
    const tmp<volVectorField>& F
) const
{
    return limiter()*F;
}


Foam::tmp<Foam::surfaceScalarField>
Foam::wallDampingModels::cosine::damp
(
    const tmp<surfaceScalarField>& Ff
) const
{
    return fvc::interpolate(limiter())*Ff;
}


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