Added realizableKE to new turbulence library

src/TurbulenceModels/compressible/turbulentFluidThermoModels/turbulentFluidThermoModels.C

@@ -57,6 +57,9 @@ makeRASModel(SpalartAllmaras);
 #include "kEpsilon.H"
 makeRASModel(kEpsilon);
 
+#include "realizableKE.H"
+makeRASModel(realizableKE);
+
 #include "buoyantKEpsilon.H"
 makeRASModel(buoyantKEpsilon);
 

src/TurbulenceModels/incompressible/turbulentTransportModels/turbulentTransportModels.C

@@ -55,6 +55,9 @@ makeRASModel(SpalartAllmaras);
 #include "kEpsilon.H"
 makeRASModel(kEpsilon);
 
+#include "realizableKE.H"
+makeRASModel(realizableKE);
+
 #include "LaunderSharmaKE.H"
 makeRASModel(LaunderSharmaKE);
 

src/TurbulenceModels/turbulenceModels/RAS/realizableKE/realizableKE.C

@@ -0,0 +1,337 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2011-2015 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 "realizableKE.H"
+#include "bound.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace RASModels
+{
+
+// * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * * //
+
+template<class BasicTurbulenceModel>
+tmp<volScalarField> realizableKE<BasicTurbulenceModel>::rCmu
+(
+    const volTensorField& gradU,
+    const volScalarField& S2,
+    const volScalarField& magS
+)
+{
+    tmp<volSymmTensorField> tS = dev(symm(gradU));
+    const volSymmTensorField& S = tS();
+
+    volScalarField W
+    (
+        (2*sqrt(2.0))*((S&S)&&S)
+       /(
+            magS*S2
+          + dimensionedScalar("small", dimensionSet(0, 0, -3, 0, 0), SMALL)
+        )
+    );
+
+    tS.clear();
+
+    volScalarField phis
+    (
+        (1.0/3.0)*acos(min(max(sqrt(6.0)*W, -scalar(1)), scalar(1)))
+    );
+    volScalarField As(sqrt(6.0)*cos(phis));
+    volScalarField Us(sqrt(S2/2.0 + magSqr(skew(gradU))));
+
+    return 1.0/(A0_ + As*Us*k_/epsilon_);
+}
+
+
+template<class BasicTurbulenceModel>
+void realizableKE<BasicTurbulenceModel>::correctNut
+(
+    const volTensorField& gradU,
+    const volScalarField& S2,
+    const volScalarField& magS
+)
+{
+    this->nut_ = rCmu(gradU, S2, magS)*sqr(k_)/epsilon_;
+    this->nut_.correctBoundaryConditions();
+}
+
+
+template<class BasicTurbulenceModel>
+void realizableKE<BasicTurbulenceModel>::correctNut()
+{
+    tmp<volTensorField> tgradU = fvc::grad(this->U_);
+    volScalarField S2(2*magSqr(dev(symm(tgradU()))));
+    volScalarField magS(sqrt(S2));
+    correctNut(tgradU(), S2, magS);
+}
+
+
+template<class BasicTurbulenceModel>
+tmp<fvScalarMatrix> realizableKE<BasicTurbulenceModel>::kSource() const
+{
+    return tmp<fvScalarMatrix>
+    (
+        new fvScalarMatrix
+        (
+            k_,
+            dimVolume*this->rho_.dimensions()*k_.dimensions()
+            /dimTime
+        )
+    );
+}
+
+
+template<class BasicTurbulenceModel>
+tmp<fvScalarMatrix> realizableKE<BasicTurbulenceModel>::epsilonSource() const
+{
+    return tmp<fvScalarMatrix>
+    (
+        new fvScalarMatrix
+        (
+            epsilon_,
+            dimVolume*this->rho_.dimensions()*epsilon_.dimensions()
+            /dimTime
+        )
+    );
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+template<class BasicTurbulenceModel>
+realizableKE<BasicTurbulenceModel>::realizableKE
+(
+    const alphaField& alpha,
+    const rhoField& rho,
+    const volVectorField& U,
+    const surfaceScalarField& alphaRhoPhi,
+    const surfaceScalarField& phi,
+    const transportModel& transport,
+    const word& propertiesName,
+    const word& type
+)
+:
+    eddyViscosity<RASModel<BasicTurbulenceModel> >
+    (
+        type,
+        alpha,
+        rho,
+        U,
+        alphaRhoPhi,
+        phi,
+        transport,
+        propertiesName
+    ),
+
+    Cmu_
+    (
+        dimensioned<scalar>::lookupOrAddToDict
+        (
+            "Cmu",
+            this->coeffDict_,
+            0.09
+        )
+    ),
+    A0_
+    (
+        dimensioned<scalar>::lookupOrAddToDict
+        (
+            "A0",
+            this->coeffDict_,
+            4.0
+        )
+    ),
+    C2_
+    (
+        dimensioned<scalar>::lookupOrAddToDict
+        (
+            "C2",
+            this->coeffDict_,
+            1.9
+        )
+    ),
+    sigmak_
+    (
+        dimensioned<scalar>::lookupOrAddToDict
+        (
+            "sigmak",
+            this->coeffDict_,
+            1.0
+        )
+    ),
+    sigmaEps_
+    (
+        dimensioned<scalar>::lookupOrAddToDict
+        (
+            "sigmaEps",
+            this->coeffDict_,
+            1.2
+        )
+    ),
+
+    k_
+    (
+        IOobject
+        (
+            "k",
+            this->runTime_.timeName(),
+            this->mesh_,
+            IOobject::MUST_READ,
+            IOobject::AUTO_WRITE
+        ),
+        this->mesh_
+    ),
+    epsilon_
+    (
+        IOobject
+        (
+            "epsilon",
+            this->runTime_.timeName(),
+            this->mesh_,
+            IOobject::MUST_READ,
+            IOobject::AUTO_WRITE
+        ),
+        this->mesh_
+    )
+{
+    bound(k_, this->kMin_);
+    bound(epsilon_, this->epsilonMin_);
+
+    if (type == typeName)
+    {
+        correctNut();
+        this->printCoeffs(type);
+    }
+}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+template<class BasicTurbulenceModel>
+bool realizableKE<BasicTurbulenceModel>::read()
+{
+    if (eddyViscosity<RASModel<BasicTurbulenceModel> >::read())
+    {
+        Cmu_.readIfPresent(this->coeffDict());
+        A0_.readIfPresent(this->coeffDict());
+        C2_.readIfPresent(this->coeffDict());
+        sigmak_.readIfPresent(this->coeffDict());
+        sigmaEps_.readIfPresent(this->coeffDict());
+
+        return true;
+    }
+    else
+    {
+        return false;
+    }
+}
+
+
+template<class BasicTurbulenceModel>
+void realizableKE<BasicTurbulenceModel>::correct()
+{
+    if (!this->turbulence_)
+    {
+        return;
+    }
+
+    // Local references
+    const alphaField& alpha = this->alpha_;
+    const rhoField& rho = this->rho_;
+    const surfaceScalarField& alphaRhoPhi = this->alphaRhoPhi_;
+    const volVectorField& U = this->U_;
+    volScalarField& nut = this->nut_;
+
+    eddyViscosity<RASModel<BasicTurbulenceModel> >::correct();
+
+    volScalarField divU(fvc::div(fvc::absolute(this->phi(), U)));
+
+    tmp<volTensorField> tgradU = fvc::grad(U);
+    volScalarField S2(2*magSqr(dev(symm(tgradU()))));
+    volScalarField magS(sqrt(S2));
+
+    volScalarField eta(magS*k_/epsilon_);
+    volScalarField C1(max(eta/(scalar(5) + eta), scalar(0.43)));
+
+    volScalarField G(this->GName(), nut*(tgradU() && dev(twoSymm(tgradU()))));
+
+    // Update epsilon and G at the wall
+    epsilon_.boundaryField().updateCoeffs();
+
+    // Dissipation equation
+    tmp<fvScalarMatrix> epsEqn
+    (
+        fvm::ddt(alpha, rho, epsilon_)
+      + fvm::div(alphaRhoPhi, epsilon_)
+      - fvm::laplacian(alpha*rho*DepsilonEff(), epsilon_)
+     ==
+        C1*alpha*rho*magS*epsilon_
+      - fvm::Sp
+        (
+            C2_*alpha*rho*epsilon_/(k_ + sqrt(this->nu()*epsilon_)),
+            epsilon_
+        )
+      + epsilonSource()
+    );
+
+    epsEqn().relax();
+
+    epsEqn().boundaryManipulate(epsilon_.boundaryField());
+
+    solve(epsEqn);
+    bound(epsilon_, this->epsilonMin_);
+
+
+    // Turbulent kinetic energy equation
+
+    tmp<fvScalarMatrix> kEqn
+    (
+        fvm::ddt(alpha, rho, k_)
+      + fvm::div(alphaRhoPhi, k_)
+      - fvm::laplacian(alpha*rho*DkEff(), k_)
+     ==
+        alpha*rho*G
+      - fvm::SuSp(2.0/3.0*alpha*rho*divU, k_)
+      - fvm::Sp(alpha*rho*epsilon_/k_, k_)
+      + kSource()
+    );
+
+    kEqn().relax();
+    solve(kEqn);
+    bound(k_, this->kMin_);
+
+    correctNut(tgradU(), S2, magS);
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace RASModels
+} // End namespace Foam
+
+// ************************************************************************* //

src/TurbulenceModels/turbulenceModels/RAS/realizableKE/realizableKE.H

@@ -0,0 +1,219 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2011-2015 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/>.
+
+Class
+    Foam::RASModels::realizableKE
+
+Group
+    grpRASTurbulence
+
+Description
+    Realizable k-epsilon turbulence model for incompressible and compressible
+    flows.
+
+    Model described in the paper:
+    \verbatim
+        "A New k-epsilon Eddy Viscosity Model for High Reynolds Number
+        Turbulent Flows"
+
+        Tsan-Hsing Shih, William W. Liou, Aamir Shabbir, Zhigang Tang and
+        Jiang Zhu
+
+        Computers and Fluids Vol. 24, No. 3, pp. 227-238, 1995
+    \endverbatim
+
+    The default model coefficients correspond to the following:
+    \verbatim
+        realizableKECoeffs
+        {
+            Cmu         0.09;
+            A0          4.0;
+            C2          1.9;
+            sigmak      1.0;
+            sigmaEps    1.2;
+        }
+    \endverbatim
+
+SourceFiles
+    realizableKE.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef realizableKE_H
+#define realizableKE_H
+
+#include "RASModel.H"
+#include "eddyViscosity.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace RASModels
+{
+
+/*---------------------------------------------------------------------------*\
+                        Class realizableKE Declaration
+\*---------------------------------------------------------------------------*/
+
+template<class BasicTurbulenceModel>
+class realizableKE
+:
+    public eddyViscosity<RASModel<BasicTurbulenceModel> >
+{
+
+protected:
+
+    // Protected data
+
+        // Model coefficients
+
+            dimensionedScalar Cmu_;
+            dimensionedScalar A0_;
+            dimensionedScalar C2_;
+            dimensionedScalar sigmak_;
+            dimensionedScalar sigmaEps_;
+
+
+        // Fields
+
+            volScalarField k_;
+            volScalarField epsilon_;
+
+
+   // Protected Member Functions
+
+        tmp<volScalarField> rCmu
+        (
+            const volTensorField& gradU,
+            const volScalarField& S2,
+            const volScalarField& magS
+        );
+
+        virtual void correctNut
+        (
+            const volTensorField& gradU,
+            const volScalarField& S2,
+            const volScalarField& magS
+        );
+
+        virtual void correctNut();
+        virtual tmp<fvScalarMatrix> kSource() const;
+        virtual tmp<fvScalarMatrix> epsilonSource() const;
+
+
+public:
+
+    typedef typename BasicTurbulenceModel::alphaField alphaField;
+    typedef typename BasicTurbulenceModel::rhoField rhoField;
+    typedef typename BasicTurbulenceModel::transportModel transportModel;
+
+
+    //- Runtime type information
+    TypeName("realizableKE");
+
+    // Constructors
+
+        //- Construct from components
+        realizableKE
+        (
+            const alphaField& alpha,
+            const rhoField& rho,
+            const volVectorField& U,
+            const surfaceScalarField& alphaRhoPhi,
+            const surfaceScalarField& phi,
+            const transportModel& transport,
+            const word& propertiesName = turbulenceModel::propertiesName,
+            const word& type = typeName
+        );
+
+
+    //- Destructor
+    virtual ~realizableKE()
+    {}
+
+
+    // 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",
+                    (this->nut_/sigmak_ + this->nu())
+                )
+            );
+        }
+
+        //- Return the effective diffusivity for epsilon
+        tmp<volScalarField> DepsilonEff() const
+        {
+            return tmp<volScalarField>
+            (
+                new volScalarField
+                (
+                    "DepsilonEff",
+                    (this->nut_/sigmaEps_ + this->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_;
+        }
+
+        //- Solve the turbulence equations and correct the turbulence viscosity
+        virtual void correct();
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace RASModels
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#ifdef NoRepository
+#   include "realizableKE.C"
+#endif
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //