GenSGSStress.C

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

    OpenFOAM is free software: you can redistribute it and/or modify it
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    for more details.

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#include <compressibleLESModels/GenSGSStress.H>

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

namespace Foam
{
namespace compressible
{
namespace LESModels
{

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

GenSGSStress::GenSGSStress
(
    const volScalarField& rho,
    const volVectorField& U,
    const surfaceScalarField& phi,
    const basicThermo& thermoPhysicalModel
)
:
    LESModel
    (
        word("GenSGSStress"),
        rho,
        U,
        phi,
        thermoPhysicalModel
    ),

    ce_
    (
        dimensioned<scalar>::lookupOrAddToDict
        (
            "ce",
            coeffDict_,
            1.048
        )
    ),

    Prt_
    (
        dimensioned<scalar>::lookupOrAddToDict
        (
            "Prt",
            coeffDict_,
            1.0
        )
    ),

    B_
    (
        IOobject
        (
            "B",
            runTime_.timeName(),
            mesh_,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        mesh_
    ),

    muSgs_
    (
        IOobject
        (
            "muSgs",
            runTime_.timeName(),
            mesh_,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        mesh_
    ),

    alphaSgs_
    (
        IOobject
        (
            "alphaSgs",
            runTime_.timeName(),
            mesh_,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        mesh_
    )
{}


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

tmp<volSymmTensorField> GenSGSStress::devRhoBeff() const
{
    return tmp<volSymmTensorField>
    (
        new volSymmTensorField
        (
            IOobject
            (
                "devRhoReff",
                runTime_.timeName(),
                mesh_,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            rho()*B_ - mu()*dev(twoSymm(fvc::grad(U())))
        )
    );
}


tmp<fvVectorMatrix> GenSGSStress::divDevRhoBeff(volVectorField& U) const
{
    return
    (
        fvc::div(rho()*B_ + 0.05*muSgs_*fvc::grad(U))
      + fvc::laplacian(0.95*muSgs_, U, "laplacian(muEff,U)")
      - fvm::laplacian(muEff(), U)
      - fvc::div(mu()*dev2(fvc::grad(U)().T()))
    );
}


void GenSGSStress::correct(const tmp<volTensorField>& gradU)
{
    LESModel::correct(gradU);
}


bool GenSGSStress::read()
{
    if (LESModel::read())
    {
        ce_.readIfPresent(coeffDict());

        return true;
    }
    else
    {
        return false;
    }
}


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

} // End namespace LESModels
} // End namespace compressible
} // End namespace Foam

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