ShihQuadraticKE.H

Go to the documentation of this file.

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2015 OpenFOAM Foundation
    Copyright (C) 2019-2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
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::incompressible::RASModels::ShihQuadraticKE
 
Group
    grpIcoRASTurbulence
 
Description
    Shih's quadratic algebraic Reynolds stress k-epsilon turbulence model for
    incompressible flows
 
    This turbulence model is described in:
    \verbatim
        Shih, T. H., Zhu, J., & Lumley, J. L. (1993).
        A realizable Reynolds stress algebraic equation model.
        NASA technical memorandum 105993.
    \endverbatim
 
    Implemented according to the specification in:
    <a href=
    "http://personalpages.manchester.ac.uk/staff/david.d.apsley/specturb.pdf"
    >Apsley: Turbulence Models 2002</a>
 
SourceFiles
    ShihQuadraticKE.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef ShihQuadraticKE_H
#define ShihQuadraticKE_H
 
#include "turbulentTransportModel.H"
#include "nonlinearEddyViscosity.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace incompressible
{
namespace RASModels
{
 
/*---------------------------------------------------------------------------*\
                      Class ShihQuadraticKE Declaration
\*---------------------------------------------------------------------------*/
 
class ShihQuadraticKE
:
    public nonlinearEddyViscosity<incompressible::RASModel>
{
 
protected:
 
    // Protected data
 
        // Model coefficients
 
            dimensionedScalar Ceps1_;
            dimensionedScalar Ceps2_;
            dimensionedScalar sigmak_;
            dimensionedScalar sigmaEps_;
            dimensionedScalar Cmu1_;
            dimensionedScalar Cmu2_;
            dimensionedScalar Cbeta_;
            dimensionedScalar Cbeta1_;
            dimensionedScalar Cbeta2_;
            dimensionedScalar Cbeta3_;
 
 
        // Fields
 
            volScalarField k_;
            volScalarField epsilon_;
 
 
    // Protected Member Functions
 
        virtual void correctNut();
        virtual void correctNonlinearStress(const volTensorField& gradU);
 
 
public:
 
    //- Runtime type information
    TypeName("ShihQuadraticKE");
 
 
    // Constructors
 
        //- Construct from components
        ShihQuadraticKE
        (
            const geometricOneField& alpha,
            const geometricOneField& rho,
            const volVectorField& U,
            const surfaceScalarField& alphaRhoPhi,
            const surfaceScalarField& phi,
            const transportModel& transport,
            const word& propertiesName = turbulenceModel::propertiesName,
            const word& type = typeName
        );
 
 
    //- Destructor
    virtual ~ShihQuadraticKE() = default;
 
 
    // Member Functions
 
        //- Re-read model coefficients if they have changed
        virtual bool read();
 
        //- Return the effective diffusivity for k
        tmp<volScalarField> DkEff() const
        {
            return tmp<volScalarField>
            (
                new volScalarField("DkEff", nut_/sigmak_ + nu())
            );
        }
 
        //- Return the effective diffusivity for epsilon
        tmp<volScalarField> DepsilonEff() const
        {
            return tmp<volScalarField>
            (
                new volScalarField("DepsilonEff", nut_/sigmaEps_ + nu())
            );
        }
 
        //- Return the turbulence kinetic energy
        virtual tmp<volScalarField> k() const
        {
            return k_;
        }
 
        //- Return the turbulence kinetic energy dissipation rate
        virtual tmp<volScalarField> epsilon() const
        {
            return epsilon_;
        }
 
        //- Return the (estimated) specific dissipation rate
        virtual tmp<volScalarField> omega() const
        {
            return tmp<volScalarField>::New
            (
                IOobject
                (
                    IOobject::groupName("omega", this->alphaRhoPhi_.group()),
                    this->runTime_.timeName(),
                    this->mesh_
                ),
                epsilon_/(0.09*k_)
            );
        }
 
        //- Solve the turbulence equations and correct the turbulence viscosity
        virtual void correct();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace RASModels
} // End namespace incompressible
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //