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turbulentPotential.C
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turbulentPotential.C
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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright held by original author
\\/ 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 2 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, write to the Free Software Foundation,
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
\*---------------------------------------------------------------------------*/
#include "turbulentPotential.H"
#include "addToRunTimeSelectionTable.H"
#include "backwardsCompatibilityWallFunctions.H"
#include "floatScalar.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace incompressible
{
namespace RASModels
{
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
defineTypeNameAndDebug(turbulentPotential, 0);
addToRunTimeSelectionTable(RASModel, turbulentPotential, dictionary);
// * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * * //
tmp<volScalarField> turbulentPotential::Ts() const
{
return max(k_/epsilon_, 6.0*sqrt(nu()/epsilon_));
}
tmp<volScalarField> turbulentPotential::TsEh() const
{
return max(1.0/epsHat_, 6.0*sqrt(nu()/epsilon_));
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
turbulentPotential::turbulentPotential
(
const volVectorField& U,
const surfaceScalarField& phi,
transportModel& transport,
const word& turbulenceModelName,
const word& modelName
)
:
RASModel(modelName, U, phi, transport, turbulenceModelName),
cEp1_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cEp1",
coeffDict_,
1.45
)
),
cEp2con_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cEp2con",
coeffDict_,
1.83
)
),
cEp3_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cEp3",
coeffDict_,
0.15
)
),
cD1_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cD1",
coeffDict_,
0.5
)
),
cD2_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cD2",
coeffDict_,
1.88
)
),
cP1_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cP1",
coeffDict_,
2.0
)
),
cP2_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cP2",
coeffDict_,
0.6
)
),
cP3_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cP3",
coeffDict_,
0.12
)
),
cPphi_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cPphi",
coeffDict_,
2.0
)
),
cMu_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cMu",
coeffDict_,
0.21
)
),
cT_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cT",
coeffDict_,
0.0033
)
),
cPr_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cPr",
coeffDict_,
1.0
)
),
cEhm_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cEhm",
coeffDict_,
10.0
)
),
cEhR_
(
dimensioned<scalar>::lookupOrAddToDict
(
"cEhR",
coeffDict_,
1.0
)
),
sigmaKInit_
(
dimensioned<scalar>::lookupOrAddToDict
(
"sigmaKInit",
coeffDict_,
1.0
)
),
sigmaEpsInit_
(
dimensioned<scalar>::lookupOrAddToDict
(
"sigmaEpsInit",
coeffDict_,
0.833
)
),
sigmaEpsVisc_
(
dimensioned<scalar>::lookupOrAddToDict
(
"sigmaEpsVisc",
coeffDict_,
1.0
)
),
sigmaPhiInit_
(
dimensioned<scalar>::lookupOrAddToDict
(
"sigmaPhiInit",
coeffDict_,
0.33
)
),
sigmaPsiInit_
(
dimensioned<scalar>::lookupOrAddToDict
(
"sigmaPsiInit",
coeffDict_,
1.0
)
),
nutScale_
(
dimensioned<scalar>::lookupOrAddToDict
(
"nutScale",
coeffDict_,
1.0
)
),
nutBlend_
(
dimensioned<scalar>::lookupOrAddToDict
(
"nutBlend",
coeffDict_,
1.0
)
),
psiNuFrac_
(
dimensioned<scalar>::lookupOrAddToDict
(
"psiNuFrac",
coeffDict_,
1.0
)
),
nutType_
(
coeffDict_.lookup("nutType")
),
solveK_
(
coeffDict_.lookup("solveK")
),
solveEps_
(
coeffDict_.lookup("solveEps")
),
solvePsi_
(
coeffDict_.lookup("solvePsi")
),
solvePhi_
(
coeffDict_.lookup("solvePhi")
),
solveNut_
(
coeffDict_.lookup("solveNut")
),
eqnSigmaK_
(
coeffDict_.lookup("eqnSigmaK")
),
eqnSigmaEps_
(
coeffDict_.lookup("eqnSigmaEps")
),
eqnSigmaPhi_
(
coeffDict_.lookup("eqnSigmaPhi")
),
eqnSigmaPsi_
(
coeffDict_.lookup("eqnSigmaPsi")
),
eqncEp2_
(
coeffDict_.lookup("eqncEp2")
),
eqnEpsHat_
(
coeffDict_.lookup("eqnEpsHat")
),
timeScaleEps_
(
coeffDict_.lookup("timeScaleEps")
),
y_(mesh_),
k_
(
IOobject
(
"k",
runTime_.timeName(),
mesh_,
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
gradk_
(
IOobject
(
"gradk",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
fvc::grad(k_)
),
epsilon_
(
IOobject
(
"epsilon",
runTime_.timeName(),
mesh_,
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
nut_
(
IOobject
(
"nut",
runTime_.timeName(),
mesh_,
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
nutNorm_
(
IOobject
(
"nutNorm",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
(nut_/max(nut_))
),
tpphi_
(
IOobject
(
"tpphi",
runTime_.timeName(),
mesh_,
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
tpphisqrt_
(
IOobject
(
"tpphi",
runTime_.timeName(),
mesh_,
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
sqrt(tpphi_)
),
vorticity_
(
IOobject
(
"vorticity",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
fvc::curl(U_)
),
vorticityTmp_
(
IOobject
(
"vorticityTmp",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
fvc::curl(U_)
),
ivorticity_
(
IOobject
(
"ivorticity",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mesh_,
dimensionedVector("iv", dimensionSet(0,0,1,0,0,0,0), vector(1.0,1.0,1.0))
),
tppsi_
(
IOobject
(
"tppsi",
runTime_.timeName(),
mesh_,
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
uGrad_
(
IOobject
(
"uGrad",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
fvc::grad(mag(U_))
),
epsHat_
(
IOobject
(
"epsHat",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mesh_,
dimensionedScalar("epsHat", dimensionSet(0,0,-1,0,0,0,0), 1.0)
),
kol_
(
IOobject
(
"kol",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mesh_,
dimensionedScalar("kol", dimensionSet(0,0,-1,0,0,0,0), 0.0)
),
kSafe_
(
IOobject
(
"kSafe",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
(k_)
),
kSqrt_
(
IOobject
(
"kSqrt",
runTime_.timeName(),
mesh_,
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
gradkSqrt_
(
IOobject
(
"gradkSqrt",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
fvc::grad(kSqrt_)
),
nutSafe_
(
IOobject
(
"nutSafe",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
(nut_)
),
epsilonSafe_
(
IOobject
(
"epsilonSafe",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
(epsilon_)
),
sigmaK_
(
IOobject
(
"sigmaK",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mesh_,
sigmaKInit_
),
sigmaEps_
(
IOobject
(
"sigmaEps",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mesh_,
sigmaEpsInit_
),
sigmaPhi_
(
IOobject
(
"sigmaPhi",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mesh_,
sigmaPhiInit_
),
sigmaPsi_
(
IOobject
(
"sigmaPsi",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mesh_,
sigmaPsiInit_
),
cEp2_
(
IOobject
(
"cEp2",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
(cEp2con_ - 0.16*exp(-0.1*sqr(k_)/(nu()*epsilon_)))
),
tpProd_
(
IOobject
(
"tpProd",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
cPr_*(tppsi_ & vorticity_)
),
cP1eqn_
(
IOobject
(
"cP1eqn",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
2.0*(0.5+0.5*((tpProd_*k_)/epsilon_))
),
dimRat_
(
IOobject
(
"dimRat",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
(psiReal() & psiReal())/(k_*phiReal())
),
graddimRat_
(
IOobject
(
"graddimRat",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
fvc::grad(dimRat_)
),
tpProdSqr_
(
IOobject
(
"tpProdSqr",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
sqr(tppsi_ & vorticity_)
),
tpProd3d_
(
IOobject
(
"tpProd3d",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
(mag(psiReal() ^ vorticity_))
)
{
Info<< "Made it past constructors " << endl;
// Calculate eddy viscosity
if(solveNut_ == "true")
{
if(timeScaleEps_ == "epsilon" || timeScaleEps_ != "epsHat")
{
nut_ = cMu_*k_*tpphi_*Ts();
nut_.correctBoundaryConditions();
}
if(timeScaleEps_ == "epsHat")
{
nut_ = cMu_*k_*tpphi_*TsEh();
nut_.correctBoundaryConditions();
}
}
//Info<< "Made it past nut" << endl;
kSafe_ = max(k_, dimensionedScalar("minK", k_.dimensions(), 1.0e-15));
Info<< "solveK is: " <<solveK_ <<endl;
Info<< "solveEps is: " <<solveEps_ <<endl;
Info<< "solvePhi is: " <<solvePhi_ <<endl;
Info<< "solvePsi is: " <<solvePsi_ <<endl;
printCoeffs();
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
// Not used but necessary for RAS Model
tmp<volSymmTensorField> turbulentPotential::R() const
{
return tmp<volSymmTensorField>
(
new volSymmTensorField
(
IOobject
(
"R",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
((2.0/3.0)*I)*k_ - nut_*twoSymm(fvc::grad(U_))
)
);
}
// Not used but necessary for RAS Model
tmp<volSymmTensorField> turbulentPotential::devReff() const
{
//Info<< "Using devReff" << endl;
return tmp<volSymmTensorField>
(
new volSymmTensorField
(
IOobject
(
"devRhoReff",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
-nuEff()*dev(twoSymm(fvc::grad(U_)))
)
);
}
tmp<fvVectorMatrix> turbulentPotential::divDevReff(volVectorField& U) const
{
return
(
fvc::grad(phiReal())
+ fvc::curl(psiReal())
+ fvc::laplacian(nut_, U, "laplacian(nuEff,U)")
- fvm::laplacian(nuEff(), U)
);
}
tmp<fvVectorMatrix> turbulentPotential::divDevRhoReff
(
const volScalarField& rho,
volVectorField& U
) const
{
volScalarField muEff("muEff", rho*nuEff());
return
(
- fvm::laplacian(muEff, U)
- fvc::div(muEff*dev(T(fvc::grad(U))))
);
}
bool turbulentPotential::read()
{
if (RASModel::read())
{
Info<< "Updating Turbulence Coefficients" << endl;
cEp1_.readIfPresent(coeffDict());
cEp2con_.readIfPresent(coeffDict());
cEp3_.readIfPresent(coeffDict());
cP1_.readIfPresent(coeffDict());
cP2_.readIfPresent(coeffDict());
cP3_.readIfPresent(coeffDict());
cMu_.readIfPresent(coeffDict());
cPphi_.readIfPresent(coeffDict());
cEhm_.readIfPresent(coeffDict());
cEhR_.readIfPresent(coeffDict());
cPr_.readIfPresent(coeffDict());
cD1_.readIfPresent(coeffDict());
cD2_.readIfPresent(coeffDict());
cT_.readIfPresent(coeffDict());
sigmaKInit_.readIfPresent(coeffDict());
sigmaEpsInit_.readIfPresent(coeffDict());
sigmaEpsVisc_.readIfPresent(coeffDict());
sigmaPhiInit_.readIfPresent(coeffDict());
sigmaPsiInit_.readIfPresent(coeffDict());
nutBlend_.readIfPresent(coeffDict());
nutScale_.readIfPresent(coeffDict());
return true;
}
else
{
Info<< "NOT Updating Turbulence Coefficients" << endl;
return false;
}
}
void turbulentPotential::correct()
{
RASModel::correct();
if (!turbulence_)
{
return;
}
if (mesh_.changing())
{
y_.correct();
bound(k_,dimensionedScalar("minK", k_.dimensions(), 1.0e-15));
bound(epsilon_,dimensionedScalar("minEps", epsilon_.dimensions(), 1.0e-15));
}
// Vorticity
vorticity_ = fvc::curl(U_);
// Production
tpProd_ = cPr_*(tppsi_ & vorticity_);
tpProdSqr_ = sqr(tpProd_);
tpProd3d_ = mag(psiReal() ^ vorticity_);
// Epsilon-hat and Sigma Equations
if(eqnEpsHat_ == "mod")
{
epsHat_ = (epsilon_)/(k_ + cEhm_*nu()*mag(gradkSqrt_));
bound(epsHat_,dimensionedScalar("minEpsHat", epsHat_.dimensions(), 1.0e-15));
}
else if(eqnEpsHat_ == "dif")
{
epsHat_ = (epsilon_ - 2.0*nu()*sqr(mag(gradkSqrt_)))/k_;
bound(epsHat_,dimensionedScalar("minEpsHat", epsHat_.dimensions(), 1.0e-15));
}
else if(eqnEpsHat_ == "rough")
{
epsHat_ = (epsilon_ - cEhR_*nu()*sqr(mag(gradkSqrt_)))/k_;
bound(epsHat_,dimensionedScalar("minEpsHat", epsHat_.dimensions(), 1.0e-15));
}
else
{
Info<< "No EpsHat Model Chosen" <<endl;
epsHat_ = (epsilon_)/(k_ + cEhm_*nu()*mag(gradkSqrt_));
bound(epsHat_,dimensionedScalar("minEpsHat", epsHat_.dimensions(), 1.0e-15));
}
if(eqnSigmaK_ == "true")
{
sigmaK_ = 0.67 + 0.33*(tpProd_/epsHat_);
}
if(eqnSigmaEps_ == "true")
{
sigmaEps_ = 0.33 + 0.5*(tpProd_/epsHat_);
}
if(eqnSigmaPhi_ == "true")
{
sigmaPhi_ = 0.21 + 0.12*(tpProd_/epsHat_);
}
if(eqnSigmaPsi_ == "true")
{
sigmaEps_ = 0.33 + 0.4*(tpProd_/epsHat_);
}
epsilonSafe_ = epsilon_ + dimensionedScalar("minEps", epsilon_.dimensions(), ROOTVSMALL);
if(eqncEp2_ == "true")
{
cEp2_ = cEp2con_ - 0.16*exp(-0.25*sqr(k_)/(nu()*epsilonSafe_));
}
else
{
cEp2_ = cEp2con_;
}
cP1eqn_ = 2.0*(0.5+0.5*((tpProd_*k_)/epsilonSafe_));
//Dissipation equation
tmp<fvScalarMatrix> epsEqn
(
fvm::ddt(epsilon_)
+ fvm::div(phi_, epsilon_)
+ fvm::SuSp(-fvc::div(phi_), epsilon_)
- fvm::laplacian(DepsilonEff(), epsilon_)
==
epsHat_*cEp1_*tpProd_*k_
+ fvm::Sp(-epsHat_*cEp2_,epsilon_)
+ epsHat_*cEp3_*tpProd3d_
);
if(solveEps_ == "true")
{
epsEqn().relax();
solve(epsEqn);
bound(epsilon_,dimensionedScalar("minEps", epsilon_.dimensions(), 1.0e-15));
}
// Turbulent kinetic energy equation
tmp<fvScalarMatrix> kEqn
(
fvm::ddt(k_)
+ fvm::div(phi_, k_)
+ fvm::SuSp(-fvc::div(phi_), k_)
- fvm::laplacian(DkEff(), k_)
==
tpProd_*k_
- fvm::Sp(epsilon_/k_,k_)
);
if(solveK_ == "true")
{
kEqn().relax();
solve(kEqn);
bound(k_,dimensionedScalar("minK", k_.dimensions(), 1.0e-15));
}
kSafe_ = max(k_, dimensionedScalar("minK", k_.dimensions(), 1.0e-15));
kSqrt_ = sqrt(k_);
kSqrt_.correctBoundaryConditions();
gradk_ = fvc::grad(k_);
gradkSqrt_ = fvc::grad(kSqrt_);
// Phi/K equation
tmp<fvScalarMatrix> tpphiEqn
(
fvm::ddt(tpphi_)
+ fvm::div(phi_, tpphi_)