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Commit 08c51ae0 authored by henry's avatar henry
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Added support for DDES and IDDES SGS models for incompressible LES in to the SA base class.

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src/turbulenceModels/LES/incompressible/Make/files
+ 3
− 0
View file @ 08c51ae0
...@@ -8,6 +8,9 @@ GenSGSStress/GenSGSStress.C ...@@ -8,6 +8,9 @@ GenSGSStress/GenSGSStress.C
laminar/laminar.C laminar/laminar.C
SpalartAllmaras/SpalartAllmaras.C SpalartAllmaras/SpalartAllmaras.C
SpalartAllmarasDDES/SpalartAllmarasDDES.C
SpalartAllmarasIDDES/SpalartAllmarasIDDES.C
SpalartAllmarasIDDES/IDDESDelta/IDDESDelta.C
oneEqEddy/oneEqEddy.C oneEqEddy/oneEqEddy.C
dynOneEqEddy/dynOneEqEddy.C dynOneEqEddy/dynOneEqEddy.C
......
src/turbulenceModels/LES/incompressible/SpalartAllmaras/SpalartAllmaras.C
+ 83
− 42
View file @ 08c51ae0
...@@ -2,7 +2,7 @@ ...@@ -2,7 +2,7 @@
========= | ========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | \\ / O peration |
\\ / A nd | Copyright (C) 1991-2008 OpenCFD Ltd. \\ / A nd | Copyright (C) 1991-2007 OpenCFD Ltd.
\\/ M anipulation | \\/ M anipulation |
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
License License
...@@ -42,8 +42,7 @@ namespace LESModels ...@@ -42,8 +42,7 @@ namespace LESModels
defineTypeNameAndDebug(SpalartAllmaras, 0); defineTypeNameAndDebug(SpalartAllmaras, 0);
addToRunTimeSelectionTable(LESModel, SpalartAllmaras, dictionary); addToRunTimeSelectionTable(LESModel, SpalartAllmaras, dictionary);
// * * * * * * * * * * * * Protected Member Functions * * * * * * * * * * * //
// * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * * //
tmp<volScalarField> SpalartAllmaras::fv1() const tmp<volScalarField> SpalartAllmaras::fv1() const
{ {
...@@ -55,7 +54,6 @@ tmp<volScalarField> SpalartAllmaras::fv1() const ...@@ -55,7 +54,6 @@ tmp<volScalarField> SpalartAllmaras::fv1() const
tmp<volScalarField> SpalartAllmaras::fv2() const tmp<volScalarField> SpalartAllmaras::fv2() const
{ {
volScalarField chi = nuTilda_/nu(); volScalarField chi = nuTilda_/nu();
//return scalar(1) - chi/(scalar(1) + chi*fv1());
return 1.0/pow3(scalar(1) + chi/Cv2_); return 1.0/pow3(scalar(1) + chi/Cv2_);
} }
...@@ -73,18 +71,57 @@ tmp<volScalarField> SpalartAllmaras::fv3() const ...@@ -73,18 +71,57 @@ tmp<volScalarField> SpalartAllmaras::fv3() const
} }
tmp<volScalarField> SpalartAllmaras::fw(const volScalarField& Stilda) const tmp<volScalarField> SpalartAllmaras::calcS(const volTensorField& gradU)
{
return ::sqrt(2.0)*mag(skew(gradU));
}
tmp<volScalarField> SpalartAllmaras::calcSTilda(const volTensorField& gradU)
{
return fv3()*calcS(gradU) + fv2()*nuTilda_/sqr(kappa_*dTilda_);
}
tmp<volScalarField> SpalartAllmaras::r
(
const volScalarField& visc,
const volScalarField& S
) const
{ {
volScalarField r = min tmp<volScalarField> tr
( (
nuTilda_ new volScalarField
/( (
max(Stilda, dimensionedScalar("SMALL", Stilda.dimensions(), SMALL)) min
*sqr(kappa_*dTilda_) (
), visc
scalar(10.0) /(
max
(
S,
dimensionedScalar("SMALL", S.dimensions(), SMALL)
)
*sqr(kappa_*dTilda_)
+ dimensionedScalar
(
"ROOTVSMALL",
dimensionSet(0, 2 , -1, 0, 0),
ROOTVSMALL
)
),
scalar(10.0)
)
)
); );
r.boundaryField() == 0.0;
return tr;
}
tmp<volScalarField> SpalartAllmaras::fw(const volScalarField& S) const
{
volScalarField r = this->r(nuTilda_, S);
volScalarField g = r + Cw2_*(pow6(r) - r); volScalarField g = r + Cw2_*(pow6(r) - r);
...@@ -92,17 +129,26 @@ tmp<volScalarField> SpalartAllmaras::fw(const volScalarField& Stilda) const ...@@ -92,17 +129,26 @@ tmp<volScalarField> SpalartAllmaras::fw(const volScalarField& Stilda) const
} }
void SpalartAllmaras::dTildaUpdate(const volScalarField&)
{
if (mesh_.changing())
{
dTilda_ = min(CDES_*delta(), wallDist(mesh_).y());
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * // // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
SpalartAllmaras::SpalartAllmaras SpalartAllmaras::SpalartAllmaras
( (
const volVectorField& U, const volVectorField& U,
const surfaceScalarField& phi, const surfaceScalarField& phi,
transportModel& transport transportModel& transport,
const word& modelName
) )
: :
LESModel(typeName, U, phi, transport), LESModel(modelName, U, phi, transport),
alphaNut_ alphaNut_
( (
...@@ -113,6 +159,15 @@ SpalartAllmaras::SpalartAllmaras ...@@ -113,6 +159,15 @@ SpalartAllmaras::SpalartAllmaras
1.5 1.5
) )
), ),
kappa_
(
dimensioned<scalar>::lookupOrAddToDict
(
"kappa",
*this,
0.4187
)
),
Cb1_ Cb1_
( (
dimensioned<scalar>::lookupOrAddToDict dimensioned<scalar>::lookupOrAddToDict
...@@ -167,15 +222,6 @@ SpalartAllmaras::SpalartAllmaras ...@@ -167,15 +222,6 @@ SpalartAllmaras::SpalartAllmaras
0.07 0.07
) )
), ),
kappa_
(
dimensioned<scalar>::lookupOrAddToDict
(
"kappa",
*this,
0.4187
)
),
Cw1_(Cb1_/sqr(kappa_) + alphaNut_*(1.0 + Cb2_)), Cw1_(Cb1_/sqr(kappa_) + alphaNut_*(1.0 + Cb2_)),
Cw2_ Cw2_
( (
...@@ -223,10 +269,7 @@ SpalartAllmaras::SpalartAllmaras ...@@ -223,10 +269,7 @@ SpalartAllmaras::SpalartAllmaras
), ),
mesh_ mesh_
) )
{ {}
printCoeffs();
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * // // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
...@@ -234,13 +277,11 @@ void SpalartAllmaras::correct(const tmp<volTensorField>& gradU) ...@@ -234,13 +277,11 @@ void SpalartAllmaras::correct(const tmp<volTensorField>& gradU)
{ {
LESModel::correct(gradU); LESModel::correct(gradU);
if (mesh_.changing()) const volScalarField STilda = calcSTilda(gradU);
{
dTilda_ = min(CDES_*delta(), wallDist(mesh_).y());
}
volScalarField Stilda = const volScalarField S = calcS(gradU);
fv3()*::sqrt(2.0)*mag(skew(gradU)) + fv2()*nuTilda_/sqr(kappa_*dTilda_);
dTildaUpdate(S);
solve solve
( (
...@@ -254,8 +295,8 @@ void SpalartAllmaras::correct(const tmp<volTensorField>& gradU) ...@@ -254,8 +295,8 @@ void SpalartAllmaras::correct(const tmp<volTensorField>& gradU)
) )
- alphaNut_*Cb2_*magSqr(fvc::grad(nuTilda_)) - alphaNut_*Cb2_*magSqr(fvc::grad(nuTilda_))
== ==
Cb1_*Stilda*nuTilda_ Cb1_*STilda*nuTilda_
- fvm::Sp(Cw1_*fw(Stilda)*nuTilda_/sqr(dTilda_), nuTilda_) - fvm::Sp(Cw1_*fw(STilda)*nuTilda_/sqr(dTilda_), nuTilda_)
); );
bound(nuTilda_, dimensionedScalar("zero", nuTilda_.dimensions(), 0.0)); bound(nuTilda_, dimensionedScalar("zero", nuTilda_.dimensions(), 0.0));
...@@ -268,7 +309,7 @@ void SpalartAllmaras::correct(const tmp<volTensorField>& gradU) ...@@ -268,7 +309,7 @@ void SpalartAllmaras::correct(const tmp<volTensorField>& gradU)
tmp<volScalarField> SpalartAllmaras::epsilon() const tmp<volScalarField> SpalartAllmaras::epsilon() const
{ {
return 2*nuEff()*magSqr(symm(fvc::grad(U()))); return 2.0*nuEff()*magSqr(symm(fvc::grad(U())));
} }
...@@ -298,16 +339,16 @@ bool SpalartAllmaras::read() ...@@ -298,16 +339,16 @@ bool SpalartAllmaras::read()
if (LESModel::read()) if (LESModel::read())
{ {
alphaNut_.readIfPresent(coeffDict()); alphaNut_.readIfPresent(coeffDict());
kappa_.readIfPresent(*this);
Cb1_.readIfPresent(coeffDict()); Cb1_.readIfPresent(coeffDict());
Cb2_.readIfPresent(coeffDict()); Cb2_.readIfPresent(coeffDict());
Cw1_ = Cb1_/sqr(kappa_) + alphaNut_*(1.0 + Cb2_);
Cw2_.readIfPresent(coeffDict());
Cw3_.readIfPresent(coeffDict());
Cv1_.readIfPresent(coeffDict()); Cv1_.readIfPresent(coeffDict());
Cv2_.readIfPresent(coeffDict()); Cv2_.readIfPresent(coeffDict());
CDES_.readIfPresent(coeffDict()); CDES_.readIfPresent(coeffDict());
ck_.readIfPresent(coeffDict()); ck_.readIfPresent(coeffDict());
kappa_.readIfPresent(*this); Cw1_ = Cb1_/sqr(kappa_) + alphaNut_*(1.0 + Cb2_);
Cw2_.readIfPresent(coeffDict());
Cw3_.readIfPresent(coeffDict());
return true; return true;
} }
......
src/turbulenceModels/LES/incompressible/SpalartAllmaras/SpalartAllmaras.H
+ 55
− 30
View file @ 08c51ae0
...@@ -2,7 +2,7 @@ ...@@ -2,7 +2,7 @@
========= | ========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | \\ / O peration |
\\ / A nd | Copyright (C) 1991-2008 OpenCFD Ltd. \\ / A nd | Copyright (C) 1991-2007 OpenCFD Ltd.
\\/ M anipulation | \\/ M anipulation |
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
License License
...@@ -23,10 +23,10 @@ License ...@@ -23,10 +23,10 @@ License
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Class Class
Foam::incompressible::LESModels::SpalartAllmaras Foam::LESmodels::SpalartAllmaras
Description Description
SpalartAllmaras for incompressible flows SpalartAllmaras DES (SA + LES) turbulence model for incompressible flows
SourceFiles SourceFiles
SpalartAllmaras.C SpalartAllmaras.C
...@@ -49,43 +49,67 @@ namespace LESModels ...@@ -49,43 +49,67 @@ namespace LESModels
{ {
/*---------------------------------------------------------------------------*\ /*---------------------------------------------------------------------------*\
Class SpalartAllmaras Declaration Class SpalartAllmaras Declaration
\*---------------------------------------------------------------------------*/ \*---------------------------------------------------------------------------*/
class SpalartAllmaras class SpalartAllmaras
: :
public LESModel public LESModel
{ {
// Private data // Private member functions
dimensionedScalar alphaNut_; // Disallow default bitwise copy construct and assignment
SpalartAllmaras(const SpalartAllmaras&);
SpalartAllmaras& operator=(const SpalartAllmaras&);
dimensionedScalar Cb1_;
dimensionedScalar Cb2_; protected:
dimensionedScalar Cv1_;
dimensionedScalar Cv2_; // Protected data
dimensionedScalar CDES_;
dimensionedScalar ck_; dimensionedScalar alphaNut_;
dimensionedScalar kappa_; dimensionedScalar kappa_;
dimensionedScalar Cw1_;
dimensionedScalar Cw2_;
dimensionedScalar Cw3_;
// Private member functions // Model constants
tmp<volScalarField> fv1() const; dimensionedScalar Cb1_;
tmp<volScalarField> fv2() const; dimensionedScalar Cb2_;
tmp<volScalarField> fv3() const; dimensionedScalar Cv1_;
tmp<volScalarField> fw(const volScalarField& Stilda) const; dimensionedScalar Cv2_;
dimensionedScalar CDES_;
dimensionedScalar ck_;
dimensionedScalar Cw1_;
dimensionedScalar Cw2_;
dimensionedScalar Cw3_;
// Disallow default bitwise copy construct and assignment
SpalartAllmaras(const SpalartAllmaras&);
SpalartAllmaras& operator=(const SpalartAllmaras&);
volScalarField nuTilda_; // Fields
volScalarField dTilda_;
volScalarField nuSgs_; volScalarField nuTilda_;
volScalarField dTilda_;
volScalarField nuSgs_;
// Protected member functions
// Helper functions
virtual tmp<volScalarField> fv1() const;
virtual tmp<volScalarField> fv2() const;
virtual tmp<volScalarField> fv3() const;
//-
virtual tmp<volScalarField> calcS(const volTensorField& gradU);
virtual tmp<volScalarField> calcSTilda(const volTensorField& gradU);
virtual tmp<volScalarField> r
(
const volScalarField& visc,
const volScalarField& S
) const;
virtual tmp<volScalarField> fw(const volScalarField& S) const;
//- Length scale calculation
virtual void dTildaUpdate(const volScalarField& S);
public: public:
...@@ -101,13 +125,14 @@ public: ...@@ -101,13 +125,14 @@ public:
( (
const volVectorField& U, const volVectorField& U,
const surfaceScalarField& phi, const surfaceScalarField& phi,
transportModel& transport transportModel& transport,
const word& modelName = typeName
); );
// Destructor // Destructor
~SpalartAllmaras() virtual ~SpalartAllmaras()
{} {}
...@@ -145,10 +170,10 @@ public: ...@@ -145,10 +170,10 @@ public:
tmp<fvVectorMatrix> divDevBeff(volVectorField& U) const; tmp<fvVectorMatrix> divDevBeff(volVectorField& U) const;
//- Correct nuTilda and related properties //- Correct nuTilda and related properties
void correct(const tmp<volTensorField>& gradU); virtual void correct(const tmp<volTensorField>& gradU);
//- Read turbulenceProperties dictionary //- Read turbulenceProperties dictionary
bool read(); virtual bool read();
}; };
......
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