LESModel.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
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-------------------------------------------------------------------------------
    Copyright (C) 2013-2017 OpenFOAM Foundation
    Copyright (C) 2021 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/>.
 
Namespace
    Foam::LESModels
 
Description
    Namespace for LES SGS models.
 
Class
    Foam::LESModel
 
Description
    Templated abstract base class for LES SGS models
 
SourceFiles
    LESModel.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef LESModel_H
#define LESModel_H
 
#include "TurbulenceModel.H"
#include "LESdelta.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class LESModel Declaration
\*---------------------------------------------------------------------------*/
 
template<class BasicTurbulenceModel>
class LESModel
:
    public BasicTurbulenceModel
{
protected:
 
    // Protected Data
 
        //- LES coefficients dictionary
        dictionary LESDict_;
 
        //- Turbulence on/off flag
        Switch turbulence_;
 
        //- Flag to print the model coeffs at run-time
        Switch printCoeffs_;
 
        //- Model coefficients dictionary
        dictionary coeffDict_;
 
        //- Empirical model constant
        dimensionedScalar Ce_;
 
        //- Lower limit of k
        dimensionedScalar kMin_;
 
        //- Lower limit of epsilon
        dimensionedScalar epsilonMin_;
 
        //- Lower limit for omega
        dimensionedScalar omegaMin_;
 
        //- Run-time selectable delta model
        autoPtr<Foam::LESdelta> delta_;
 
 
    // Protected Member Functions
 
        //- Print model coefficients
        virtual void printCoeffs(const word& type);
 
        //- No copy construct
        LESModel(const LESModel&) = delete;
 
        //- No copy assignment
        void operator=(const LESModel&) = delete;
 
 
public:
 
    typedef typename BasicTurbulenceModel::alphaField alphaField;
    typedef typename BasicTurbulenceModel::rhoField rhoField;
    typedef typename BasicTurbulenceModel::transportModel transportModel;
 
 
    //- Runtime type information
    TypeName("LES");
 
 
    // Declare run-time constructor selection table
 
        declareRunTimeSelectionTable
        (
            autoPtr,
            LESModel,
            dictionary,
            (
                const alphaField& alpha,
                const rhoField& rho,
                const volVectorField& U,
                const surfaceScalarField& alphaRhoPhi,
                const surfaceScalarField& phi,
                const transportModel& transport,
                const word& propertiesName
            ),
            (alpha, rho, U, alphaRhoPhi, phi, transport, propertiesName)
        );
 
 
    // Constructors
 
        //- Construct from components
        LESModel
        (
            const word& type,
            const alphaField& alpha,
            const rhoField& rho,
            const volVectorField& U,
            const surfaceScalarField& alphaRhoPhi,
            const surfaceScalarField& phi,
            const transportModel& transport,
            const word& propertiesName
        );
 
 
    // Selectors
 
        //- Return a reference to the selected LES model
        static autoPtr<LESModel> New
        (
            const alphaField& alpha,
            const rhoField& rho,
            const volVectorField& U,
            const surfaceScalarField& alphaRhoPhi,
            const surfaceScalarField& phi,
            const transportModel& transport,
            const word& propertiesName = turbulenceModel::propertiesName
        );
 
 
    //- Destructor
    virtual ~LESModel() = default;
 
 
    // Member Functions
 
        //- Read model coefficients if they have changed
        virtual bool read();
 
 
        // Access
 
            //- Const access to the coefficients dictionary
            virtual const dictionary& coeffDict() const
            {
                return coeffDict_;
            }
 
            // Return the empirical model constant
            const dimensionedScalar& Ce() const noexcept
            {
                return Ce_;
            }
 
            //- Return the lower allowable limit for k (default: SMALL)
            const dimensionedScalar& kMin() const
            {
                return kMin_;
            }
 
            //- Allow kMin to be changed
            dimensionedScalar& kMin()
            {
                return kMin_;
            }
 
            //- Access function to filter width
            inline const volScalarField& delta() const
            {
                return *delta_;
            }
 
 
        //- Return the effective viscosity
        virtual tmp<volScalarField> nuEff() const
        {
            return tmp<volScalarField>
            (
                new volScalarField
                (
                    IOobject::groupName("nuEff", this->alphaRhoPhi_.group()),
                    this->nut() + this->nu()
                )
            );
        }
 
        //- Return the effective viscosity on patch
        virtual tmp<scalarField> nuEff(const label patchi) const
        {
            return this->nut(patchi) + this->nu(patchi);
        }
 
        //- Return the turbulence kinetic energy dissipation rate
        virtual tmp<volScalarField> epsilon() const;
 
        //- Return the specific dissipation rate
        virtual tmp<volScalarField> omega() const;
 
        //- Solve the turbulence equations and correct the turbulence viscosity
        virtual void correct();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "LESModel.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //