The sigma SGS model. More...
Public Types | |
typedef BasicTurbulenceModel::alphaField | alphaField |
typedef BasicTurbulenceModel::rhoField | rhoField |
typedef BasicTurbulenceModel::transportModel | transportModel |
Public Types inherited from LESeddyViscosity< BasicTurbulenceModel > | |
typedef BasicTurbulenceModel::alphaField | alphaField |
typedef BasicTurbulenceModel::rhoField | rhoField |
typedef BasicTurbulenceModel::transportModel | transportModel |
Public Types inherited from eddyViscosity< LESModel< BasicTurbulenceModel > > | |
typedef LESModel< BasicTurbulenceModel > ::alphaField | alphaField |
typedef LESModel< BasicTurbulenceModel > ::rhoField | rhoField |
typedef LESModel< BasicTurbulenceModel > ::transportModel | transportModel |
Public Types inherited from linearViscousStress< LESModel< BasicTurbulenceModel > > | |
typedef LESModel< BasicTurbulenceModel > ::alphaField | alphaField |
typedef LESModel< BasicTurbulenceModel > ::rhoField | rhoField |
typedef LESModel< BasicTurbulenceModel > ::transportModel | transportModel |
Public Types inherited from LESModel< BasicTurbulenceModel > | |
typedef BasicTurbulenceModel::alphaField | alphaField |
typedef BasicTurbulenceModel::rhoField | rhoField |
typedef BasicTurbulenceModel::transportModel | transportModel |
Public Member Functions | |
TypeName ("sigma") | |
Runtime type information. More... | |
sigma (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) | |
Construct from components. More... | |
virtual | ~sigma () |
Destructor. More... | |
virtual bool | read () |
Read model coefficients if they have changed. More... | |
virtual tmp< volScalarField > | k () const |
Return SGS kinetic energy. More... | |
virtual tmp< volScalarField > | epsilon () const |
Return SGS disipation rate. More... | |
virtual void | correct () |
Correct Eddy-Viscosity and related properties. More... | |
Public Member Functions inherited from LESeddyViscosity< BasicTurbulenceModel > | |
LESeddyViscosity (const word &type, const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const transportModel &transport, const word &propertiesName=turbulenceModel::propertiesName) | |
Construct from components. More... | |
virtual | ~LESeddyViscosity ()=default |
Destructor. More... | |
Public Member Functions inherited from eddyViscosity< LESModel< BasicTurbulenceModel > > | |
eddyViscosity (const word &modelName, const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const transportModel &transport, const word &propertiesName) | |
Construct from components. More... | |
virtual | ~eddyViscosity ()=default |
Destructor. More... | |
virtual tmp< volScalarField > | nut () const |
Return the turbulence viscosity. More... | |
virtual tmp< scalarField > | nut (const label patchi) const |
Return the turbulence viscosity on patch. More... | |
virtual tmp< volSymmTensorField > | R () const |
Return the Reynolds stress tensor. More... | |
virtual void | validate () |
Validate the turbulence fields after construction. More... | |
Public Member Functions inherited from linearViscousStress< LESModel< BasicTurbulenceModel > > | |
linearViscousStress (const word &modelName, const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const transportModel &transport, const word &propertiesName) | |
Construct from components. More... | |
virtual | ~linearViscousStress ()=default |
Destructor. More... | |
virtual tmp< volSymmTensorField > | devRhoReff () const |
Return the effective stress tensor. More... | |
virtual tmp< volSymmTensorField > | devRhoReff (const volVectorField &U) const |
Return the effective stress tensor based on a given velocity field. More... | |
virtual tmp< fvVectorMatrix > | divDevRhoReff (volVectorField &U) const |
Return the source term for the momentum equation. More... | |
virtual tmp< fvVectorMatrix > | divDevRhoReff (const volScalarField &rho, volVectorField &U) const |
Return the source term for the momentum equation. More... | |
Public Member Functions inherited from LESModel< BasicTurbulenceModel > | |
TypeName ("LES") | |
Runtime type information. More... | |
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)) | |
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) | |
Construct from components. More... | |
virtual | ~LESModel ()=default |
Destructor. More... | |
virtual const dictionary & | coeffDict () const |
Const access to the coefficients dictionary. More... | |
const dimensionedScalar & | Ce () const noexcept |
const dimensionedScalar & | kMin () const |
Return the lower allowable limit for k (default: SMALL) More... | |
dimensionedScalar & | kMin () |
Allow kMin to be changed. More... | |
const volScalarField & | delta () const |
Access function to filter width. More... | |
virtual tmp< volScalarField > | nuEff () const |
Return the effective viscosity. More... | |
virtual tmp< scalarField > | nuEff (const label patchi) const |
Return the effective viscosity on patch. More... | |
virtual tmp< volScalarField > | omega () const |
Return the specific dissipation rate. More... | |
Protected Member Functions | |
virtual void | correctNut () |
Update the SGS eddy-viscosity. More... | |
Protected Member Functions inherited from LESModel< BasicTurbulenceModel > | |
virtual void | printCoeffs (const word &type) |
Print model coefficients. More... | |
LESModel (const LESModel &)=delete | |
No copy construct. More... | |
void | operator= (const LESModel &)=delete |
No copy assignment. More... | |
Protected Attributes | |
dimensionedScalar | Ck_ |
dimensionedScalar | Cw_ |
dimensionedScalar | Csigma_ |
Protected Attributes inherited from eddyViscosity< LESModel< BasicTurbulenceModel > > | |
volScalarField | nut_ |
Protected Attributes inherited from LESModel< BasicTurbulenceModel > | |
dictionary | LESDict_ |
LES coefficients dictionary. More... | |
Switch | turbulence_ |
Turbulence on/off flag. More... | |
Switch | printCoeffs_ |
Flag to print the model coeffs at run-time. More... | |
dictionary | coeffDict_ |
Model coefficients dictionary. More... | |
dimensionedScalar | Ce_ |
Empirical model constant. More... | |
dimensionedScalar | kMin_ |
Lower limit of k. More... | |
dimensionedScalar | epsilonMin_ |
Lower limit of epsilon. More... | |
dimensionedScalar | omegaMin_ |
Lower limit for omega. More... | |
autoPtr< Foam::LESdelta > | delta_ |
Run-time selectable delta model. More... | |
Additional Inherited Members | |
Static Public Member Functions inherited from LESModel< BasicTurbulenceModel > | |
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) |
Return a reference to the selected LES model. More... | |
The sigma SGS model.
Nicoud, F., Toda, H. B., Cabrit, O., Bose, S., & Lee, J. (2011). Using singular values to build a subgrid-scale model for large eddy simulations. Physics of fluids, 23(8), 085106. DOI:10.1063/1.3623274
The default model coefficients correspond to the following:
sigmaCoeffs { ck 0.094; Csigma 1.68; }
typedef BasicTurbulenceModel::alphaField alphaField |
typedef BasicTurbulenceModel::transportModel transportModel |
sigma | ( | const alphaField & | alpha, |
const rhoField & | rho, | ||
const volVectorField & | U, | ||
const surfaceScalarField & | alphaRhoPhi, | ||
const surfaceScalarField & | phi, | ||
const transportModel & | transport, | ||
const word & | propertiesName = turbulenceModel::propertiesName , |
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const word & | type = typeName |
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) |
Construct from components.
Definition at line 51 of file sigma.C.
References Foam::type().
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protectedvirtual |
Update the SGS eddy-viscosity.
Implements eddyViscosity< LESModel< BasicTurbulenceModel > >.
Definition at line 36 of file sigma.C.
References optionList::correct(), delta, Foam::fvc::grad(), options::New(), Foam::sqr(), and DESModel< BasicTurbulenceModel >::Ssigma().
TypeName | ( | "sigma< BasicTurbulenceModel >" | ) |
Runtime type information.
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virtual |
Read model coefficients if they have changed.
Reimplemented from LESeddyViscosity< BasicTurbulenceModel >.
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virtual |
Return SGS kinetic energy.
Implements eddyViscosity< LESModel< BasicTurbulenceModel > >.
Definition at line 130 of file sigma.C.
References delta, Foam::devSymm(), Foam::fvc::grad(), IOobject::groupName(), Foam::magSqr(), tmp< T >::New(), and Foam::sqr().
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Return SGS disipation rate.
Reimplemented from LESModel< BasicTurbulenceModel >.
Definition at line 143 of file sigma.C.
References delta, IOobject::groupName(), k, tmp< T >::New(), and Foam::sqrt().
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virtual |
Correct Eddy-Viscosity and related properties.
Implements eddyViscosity< LESModel< BasicTurbulenceModel > >.
Definition at line 154 of file sigma.C.
References eddyViscosity< LESModel< BasicTurbulenceModel > >::correct().
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protected |
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protected |
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protected |
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