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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 "components.H"
#include "fvCFD.H"
#include "volFields.H"
#include "wallDist.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Hello
namespace Foam
{
namespace incompressible
{
namespace RASModels
{
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
defineTypeNameAndDebug(turbulentPotential, 0);
addToRunTimeSelectionTable(RASModel, turbulentPotential, dictionary);
// * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * * //
tmp<volScalarField> turbulentPotential::Ts() const
{
if(tslimiter_ == "true")
{
return max(k_/(epsilon_ + epsilonSmall_), 6.0*sqrt(nu()/(epsilon_ + epsilonSmall_)));
}
return ((k_+k0_)/(epsilon_ + epsilonSmall_));
}
tmp<volScalarField> turbulentPotential::Ls() const
{
volScalarField trueL = pow(k_+k0_, 1.5)/(epsilon_ + epsilonSmall_);
if(lslimiter_ == "true")
{
return cL1_*max(pow(k_+k0_, 1.5)/(epsilon_ + epsilonSmall_),cL2_*pow(pow3(nu())/(epsilon_ + epsilonSmall_),0.25));
}
//Info << "Max trueL: " << gMax(trueL) << " Min trueL: " << gMin(trueL) << endl;
//Info << "Dims: " << trueL.dimensions() << endl;
return pow(k_+k0_, 1.5)/(epsilon_ + epsilonSmall_);
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
turbulentPotential::turbulentPotential
(
const volVectorField& U,
const surfaceScalarField& phi,
transportModel& lamTransportModel
)
:
RASModel(typeName, U, phi, lamTransportModel),
cEp1_
(
dimensionedScalar::lookupOrAddToDict
(
"cEp1",
coeffDict_,
1.45
)
),
cEp2con_
(
dimensionedScalar::lookupOrAddToDict
(
"cEp2con",
coeffDict_,
1.83
)
),
cEp3_
(
dimensionedScalar::lookupOrAddToDict
(
"cEp3",
coeffDict_,
0.15
)
),
cD1_
(
dimensionedScalar::lookupOrAddToDict
(
"cD1",
coeffDict_,
0.5
)
),
cD2_
(
dimensionedScalar::lookupOrAddToDict
(
"cD2",
coeffDict_,
0.33
)
),
cD3_
(
dimensionedScalar::lookupOrAddToDict
(
"cD3",
coeffDict_,
3.0
)
),
cD4_
(
dimensionedScalar::lookupOrAddToDict
(
"cD4",
coeffDict_,
2.4
)
),
cP1_
(
dimensionedScalar::lookupOrAddToDict
(
"cP1",
coeffDict_,
2.0
)
),
cP2_
(
dimensionedScalar::lookupOrAddToDict
(
"cP2",
coeffDict_,
0.6
)
),
cP3_
(
dimensionedScalar::lookupOrAddToDict
(
"cP3",
coeffDict_,
0.42
)
),
cP4_
(
dimensionedScalar::lookupOrAddToDict
(
"cP4",
coeffDict_,
0.85714
)
),
cL1_
(
dimensionedScalar::lookupOrAddToDict
(
"cL1",
coeffDict_,
0.36
)
),
cL2_
(
dimensionedScalar::lookupOrAddToDict
(
"cL2",
coeffDict_,
85.0
)
),
cMu_
(
dimensionedScalar::lookupOrAddToDict
(
"cMu",
coeffDict_,
0.21
)
),
betaK_
(
dimensionedScalar::lookupOrAddToDict
(
"betaK",
coeffDict_,
0.09
)
),
cT_
(
dimensionedScalar::lookupOrAddToDict
(
"cT",
coeffDict_,
0.02
)
),
cA_
(
dimensionedScalar::lookupOrAddToDict
(
"cA",
coeffDict_,
1.0
)
),
cEhmM_
(
dimensionedScalar::lookupOrAddToDict
(
"cEhmM",
coeffDict_,
10.0
)
),
cNF_
(
dimensionedScalar::lookupOrAddToDict
(
"cNF",
coeffDict_,
1.0
)
),
pMix_
(
dimensionedScalar::lookupOrAddToDict
(
"pMix",
coeffDict_,
0.4
)
),
cPrK_
(
dimensionedScalar::lookupOrAddToDict
(
"cPrK",
coeffDict_,
0.6
)
),
cPrP_
(
dimensionedScalar::lookupOrAddToDict
(
"cPrP",
coeffDict_,
1.0
)
),
cNL_
(
dimensionedScalar::lookupOrAddToDict
(
"cNL",
coeffDict_,
0.00001
)
),
nutRatMax_
(
dimensionedScalar::lookupOrAddToDict
(
"nutRatMax",
coeffDict_,
1.0e5
)
),
sigmaK_
(
dimensionedScalar::lookupOrAddToDict
(
"sigmaK",
coeffDict_,
1.0
)
),
sigmaEps_
(
dimensionedScalar::lookupOrAddToDict
(
"sigmaEps",
coeffDict_,
0.833
)
),
sigmaPhi_
(
dimensionedScalar::lookupOrAddToDict
(
"sigmaPhi",
coeffDict_,
0.33
)
),
sigmaPsi_
(
dimensionedScalar::lookupOrAddToDict
(
"sigmaPsi",
coeffDict_,
1.0
)
),
prodType_
(
dimensionedScalar::lookupOrAddToDict
(
"prodType",
coeffDict_,
1.0
)
),
dampType_
(
dimensionedScalar::lookupOrAddToDict
(
"dampType",
coeffDict_,
1.0
)
),
cEp1Type_
(
dimensionedScalar::lookupOrAddToDict
(
"cEp1Type",
coeffDict_,
1.0
)
),
gType_
(
dimensionedScalar::lookupOrAddToDict
(
"gType",
coeffDict_,
1.0
)
),
solveK_
(
coeffDict_.lookup("solveK")
),
solveEps_
(
coeffDict_.lookup("solveEps")
),
solvePsi_
(
coeffDict_.lookup("solvePsi")
),
solvePhi_
(
coeffDict_.lookup("solvePhi")
),
solveNut_
(
coeffDict_.lookup("solveNut")
),
eqncEp1_
(
coeffDict_.lookup("eqncEp1")
),
eqncEp2_
(
coeffDict_.lookup("eqncEp2")
),
eqnEpsHat_
(
coeffDict_.lookup("eqnEpsHat")
),
debugWrite_
(
coeffDict_.lookup("debugWrite")
),
tslimiter_
(
coeffDict_.lookup("tslimiter")
),
lslimiter_
(
coeffDict_.lookup("lslimiter")
),
eqncMu_
(
coeffDict_.lookup("eqncMu")
),
nutReal_
(
coeffDict_.lookup("nutReal")
),
y_
(
mesh_
),
k_
(
IOobject
(
"k",
runTime_.timeName(),
U_.db(),
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
gradk_
(
IOobject
(
"gradk",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(fvc::grad(k_))
),
epsilon_
(
IOobject
(
"epsilon",
runTime_.timeName(),
U_.db(),
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
nut_
(
IOobject
(
"nut",
runTime_.timeName(),
U_.db(),
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
nutNorm_
(
IOobject
(
"nutNorm",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(nut_/max(nut_))
),
tpphi_
(
IOobject
(
"tpphi",
runTime_.timeName(),
U_.db(),
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
tpphiSqrt_
(
IOobject
(
"tpphiSqrt",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(sqrt(tpphi_))
),
vorticity_
(
IOobject
(
"vorticity",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
(fvc::curl(U_))
),
tppsi_
(
IOobject
(
"tppsi",
runTime_.timeName(),
U_.db(),
IOobject::MUST_READ,
IOobject::AUTO_WRITE
),
mesh_
),
uGrad_
(
IOobject
(
"uGrad",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
(fvc::grad(U_))
),
epsHat_
(
IOobject
(
"epsHat",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
(epsilon_/(k_ + k0_))
),
kSqrt_
(
IOobject
(
"kSqrt",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(sqrt(k_))
),
alpha_
(
IOobject
(
"alpha",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(1.0/(1.0 + 1.5*tpphi_))
),
gamma_
(
IOobject
(
"gamma",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
(1.0/(1.0 + 0.667*nut_/nu()))
),
phiSqrt_
(
IOobject
(
"phiSqrt",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(sqrt(tpphi_*k_))
),
gradkSqrt_
(
IOobject
(
"gradkSqrt",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(fvc::grad(kSqrt_))
),
cEp2_
(
IOobject
(
"cEp2",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(cEp2con_ - 0.16*exp(-0.1*sqr(k_)/(nu()*epsilon_)))
),
tpProd_
(
IOobject
(
"tpProd",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
((2*nut_*magSqr(symm(fvc::grad(U_)))/k_))
),
cP1eqn_
(
IOobject
(
"cP1eqn",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(2.0*(0.5+0.5*((tpProd_*k_)/epsilon_)))
),
gradTpphi_
(
IOobject
(
"gradTpphi",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(fvc::grad(tpphi_))
),
gradTppsi_
(
IOobject
(
"gradTppsi",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(fvc::grad(tppsi_))
),
tpProdSqr_
(
IOobject
(
"tpProdSqr",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(sqr(tppsi_ & vorticity_))
),
tpProd3d_
(
IOobject
(
"tpProd3d",
runTime_.timeName(),
U_.db(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
(mag(psiReal() ^ vorticity_))
)
{
Info<< "Made it past constructors " << endl;
//*************************************//
// Eddy viscosity - diffusion only
//*************************************//
if(solveNut_ == "true")
{
nut_ = cMu_*k_*tpphi_*Ts();
nut_ = min(nut_,nutRatMax_*nu());
nut_.correctBoundaryConditions();
bound(nut_,dimensionedScalar("minNut", nut_.dimensions(), SMALL));
}
//*************************************//
// Epsilon-hat
//*************************************//
epsHat_ = epsilon_/(k_ + (cEhmM_*nu()*mag(gradkSqrt_)));
bound(epsHat_,dimensionedScalar("minEpsHat", epsHat_.dimensions(), SMALL));
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
{
return tmp<volSymmTensorField>
(
new volSymmTensorField
(
IOobject
(
"devRhoReff",
runTime_.timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
-nuEff()*dev(twoSymm(fvc::grad(U_)))
)
);
}
// Term that is directly added to the momentum equation
tmp<fvVectorMatrix> turbulentPotential::divDevReff() const
{
return
(
fvc::grad(phiReal())
+ fvc::curl(psiReal())
+ fvc::laplacian(nut_, U_, "laplacian(nuEff,U_)")
- fvm::laplacian(nuEff(), U_)
);
}
bool turbulentPotential::read()
{
if (RASModel::read())
{
cEp1_.readIfPresent(coeffDict());
cEp2con_.readIfPresent(coeffDict());
cEp3_.readIfPresent(coeffDict());
cP1_.readIfPresent(coeffDict());
cP2_.readIfPresent(coeffDict());
cP3_.readIfPresent(coeffDict());
cP4_.readIfPresent(coeffDict());
cL1_.readIfPresent(coeffDict());
cL2_.readIfPresent(coeffDict());
cMu_.readIfPresent(coeffDict());
cEhmM_.readIfPresent(coeffDict());
cPrK_.readIfPresent(coeffDict());
cPrP_.readIfPresent(coeffDict());
cD1_.readIfPresent(coeffDict());
cD2_.readIfPresent(coeffDict());
cD3_.readIfPresent(coeffDict());
cD4_.readIfPresent(coeffDict());
cT_.readIfPresent(coeffDict());
cA_.readIfPresent(coeffDict());
cNL_.readIfPresent(coeffDict());
cNF_.readIfPresent(coeffDict());
sigmaK_.readIfPresent(coeffDict());
sigmaEps_.readIfPresent(coeffDict());
sigmaPhi_.readIfPresent(coeffDict());
sigmaPsi_.readIfPresent(coeffDict());
prodType_.readIfPresent(coeffDict());
cEp1Type_.readIfPresent(coeffDict());
gType_.readIfPresent(coeffDict());
return true;
}
else
{
return false;
}
}
void turbulentPotential::correct()
{
//**********************************************//
// Bounding values not already defined by model
//**********************************************//
const dimensionedScalar eH0("minEpsHat", epsHat_.dimensions(), ROOTVSMALL);
const dimensionedScalar nut0("minNut", nut_.dimensions(), ROOTVSMALL);
const dimensionedScalar nutSmall("smallNut", nut_.dimensions(), SMALL);
const dimensionedScalar tph0("minTpphi", tpphi_.dimensions(), ROOTVSMALL);
const dimensionedScalar L0("lMin", dimensionSet(0,1,0,0,0,0,0), ROOTVSMALL);
if (mesh_.changing())
{
y_.correct();
bound(k_, k0_);
bound(epsilon_, epsilonSmall_);
bound(tpphi_,tph0);
bound(nut_,nut0);
}
RASModel::correct();
if (!turbulence_)
{
return;
}
//*************************************//
// Timestep - for use in elliptic switch
//*************************************//
dimensionedScalar cTime = U_.mesh().time().value();
word sMMdebug = runTime_.controlDict().lookup("showMaxMin");
//*************************************//
// Vorticity and Gradient
//*************************************//
vorticity_ = fvc::curl(U_);
uGrad_ = fvc::grad(U_);
//*************************************//
// Length and Time Scales
//*************************************//
const volScalarField L("Length",Ls());
const volScalarField L2("Lsqr",sqr(L));
const volScalarField T("Time",Ts());
const volScalarField nutPsi("nutPsi", mag(tppsi_)*k_/(mag(vorticity_) + (cNL_/Ts())));
//*************************************//
// Misc Terms
//*************************************//
const volVectorField gradPhi_("gradPhi", fvc::grad(phiReal()));
const volScalarField gradgradPhi_("gradgradPhi", fvc::laplacian(DphiEff(),phiReal()));
tpphiSqrt_ = sqrt(tpphi_ + ROOTVSMALL);
const volVectorField gradTpphiSqrt("gradTpphiSqrt",fvc::grad(tpphiSqrt_));
kSqrt_ = sqrt(mag(k_)+k0_);
bound(kSqrt_,dimensionedScalar("minKsqrt", kSqrt_.dimensions(), sqrt(ROOTVSMALL)));
gradk_ = fvc::grad(k_);
gradkSqrt_ = fvc::grad(kSqrt_);
gradTpphi_ = fvc::grad(tpphi_);
phiSqrt_ = sqrt(tpphi_*k_ + k0_);
const volVectorField gradPhiSqrt_("gradPhiSqrt",fvc::grad(phiSqrt_));
//*************************************//
// K Production
//*************************************//
const volScalarField S2 = 2*magSqr(dev(symm(uGrad_)));
const volScalarField magS = sqrt(S2);
volScalarField G("RASModel::G", nut_*S2);
volScalarField GdK("GdK", G/(k_ + k0_));
const volScalarField Gnut("Gnut", nut_*S2);
if(prodType_.value() == 1.0){
Info<< "Using psi-vorticity production term" <<endl;
tpProd_ = mag(tppsi_ & vorticity_);
G = tpProd_*k_;
GdK = tpProd_;
} else if(prodType_.value() == 2.0){
Info<< "Using strain production term" <<endl;
tpProd_ = GdK;
} else if(prodType_.value() == 3.0){
Info<< "Using mixed 3 production term" <<endl;
tpProd_ = alpha_*mag(tppsi_ & vorticity_) + pMix_*(1.0-alpha_)*cPrK_*magS + (1.0 - pMix_)*(1.0 - alpha_)*cPrP_*tpphi_*magS;
G = tpProd_*k_;
GdK = tpProd_;
} else if(prodType_.value() == 4.0){
Info<< "Using mixed 4 production term" <<endl;
tpProd_ = alpha_*mag(tppsi_ & vorticity_) + 0.94*(1.0-alpha_)*GdK;
G = tpProd_*k_;
GdK = tpProd_;
} else if(prodType_.value() == 5.0){
Info<< "Using mixed 5 production term" <<endl;
G = alpha_*mag((tppsi_*k_) & vorticity_) + 0.27*(1.0-alpha_)*(k_ - 1.5*nut_*mag(gradPhiSqrt_))*magS;
tpProd_ = G/(k_+k0_);
GdK = tpProd_;
} else{
Info<< "Using psi-vorticity production term" <<endl;
tpProd_ = mag(tppsi_ & vorticity_);
G = tpProd_*k_;
GdK = tpProd_;
}
tpProdSqr_ = sqr(tpProd_);
tpProd3d_ = mag(psiReal() ^ vorticity_);
const volScalarField pOD = G/epsilon_;