Speziale, Sarkar and Gatski Reynolds-stress turbulence model for incompressible and compressible flows. More...

Inheritance diagram for SSG< BasicMomentumTransportModel >:

Collaboration diagram for SSG< BasicMomentumTransportModel >:

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Public Types
typedef BasicMomentumTransportModel::alphaField	alphaField

typedef BasicMomentumTransportModel::rhoField	rhoField

Public Types inherited from ReynoldsStress< RASModel< BasicMomentumTransportModel > >
typedef BasicMomentumTransportModel::alphaField	alphaField

typedef BasicMomentumTransportModel::rhoField	rhoField

Public Types inherited from RASModel< BasicMomentumTransportModel >
typedef BasicMomentumTransportModel::alphaField	alphaField

typedef BasicMomentumTransportModel::rhoField	rhoField

Public Member Functions
	TypeName ("SSG")
	Runtime type information. More...

	SSG (const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity, const word &type=typeName)
	Construct from components. More...

	SSG (const SSG &)=delete
	Disallow default bitwise copy construction. More...

virtual	~SSG ()
	Destructor. More...

virtual bool	read ()
	Read model coefficients if they have changed. More...

virtual tmp< volScalarField >	k () const
	Return the turbulence kinetic energy. More...

virtual tmp< volScalarField >	epsilon () const
	Return the turbulence kinetic energy dissipation rate. More...

virtual tmp< volScalarField >	omega () const
	Return the turbulence specific dissipation rate. More...

tmp< volSymmTensorField >	DREff () const
	Return the effective diffusivity for R. More...

tmp< volSymmTensorField >	DepsilonEff () const
	Return the effective diffusivity for epsilon. More...

virtual void	correct ()
	Solve the turbulence equations and correct eddy-Viscosity and. More...

void	operator= (const SSG &)=delete
	Disallow default bitwise assignment. More...

Public Member Functions inherited from ReynoldsStress< RASModel< BasicMomentumTransportModel > >
Foam::tmp< Foam::fvVectorMatrix >	DivDevRhoReff (const RhoFieldType &rho, volVectorField &U) const

	ReynoldsStress (const word &modelName, const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity)
	Construct from components. More...

virtual	~ReynoldsStress ()
	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 >	sigma () const
	Return the Reynolds stress tensor [m^2/s^2]. More...

virtual tmp< volSymmTensorField >	devTau () const
	Return the effective stress tensor. More...

virtual tmp< fvVectorMatrix >	divDevTau (volVectorField &U) const
	Return the source term for the momentum equation. More...

virtual tmp< fvVectorMatrix >	divDevTau (const volScalarField &rho, volVectorField &U) const
	Return the source term for the momentum equation. More...

virtual void	validate ()
	Validate the turbulence fields after construction. More...

Public Member Functions inherited from RASModel< BasicMomentumTransportModel >
	TypeName ("RAS")
	Runtime type information. More...

	declareRunTimeSelectionTable (autoPtr, RASModel, dictionary,(const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity),(alpha, rho, U, alphaRhoPhi, phi, viscosity))

	RASModel (const word &type, const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity)
	Construct from components. More...

	RASModel (const RASModel &)=delete
	Disallow default bitwise copy construction. More...

virtual	~RASModel ()
	Destructor. More...

virtual const dictionary &	coeffDict () const
	Const access to the coefficients dictionary. More...

virtual tmp< volScalarField >	nu () const
	Return the laminar viscosity. More...

virtual tmp< scalarField >	nu (const label patchi) const
	Return the laminar viscosity on patchi. 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 void	predict ()
	Predict the turbulence transport coefficients if possible. More...

void	operator= (const RASModel &)=delete
	Disallow default bitwise assignment. More...

Protected Member Functions
tmp< volScalarField >	boundEpsilon ()
	Bound epsilon and return Cmu*sqr(k) for nut. More...

virtual void	correctNut ()
	Correct the eddy-viscosity nut. More...

virtual tmp< fvScalarMatrix >	epsilonSource () const
	Source term for the epsilon equation. More...

Protected Member Functions inherited from ReynoldsStress< RASModel< BasicMomentumTransportModel > >
void	boundNormalStress (volSymmTensorField &R) const

void	correctWallShearStress (volSymmTensorField &R) const

virtual tmp< fvSymmTensorMatrix >	RSource () const
	Source term for the R equation. More...

tmp< fvVectorMatrix >	DivDevRhoReff (const RhoFieldType &rho, volVectorField &U) const
	Return the source term for the momentum equation. More...

Protected Member Functions inherited from RASModel< BasicMomentumTransportModel >
virtual void	printCoeffs (const word &type)
	Print model coefficients. More...

Protected Attributes
dimensionedScalar	Cmu_

dimensionedScalar	C1_

dimensionedScalar	C1s_

dimensionedScalar	C2_

dimensionedScalar	C3_

dimensionedScalar	C3s_

dimensionedScalar	C4_

dimensionedScalar	C5_

dimensionedScalar	Ceps1_

dimensionedScalar	Ceps2_

dimensionedScalar	Cs_

dimensionedScalar	Ceps_

volScalarField	k_

volScalarField	epsilon_

Protected Attributes inherited from ReynoldsStress< RASModel< BasicMomentumTransportModel > >
dimensionedScalar	couplingFactor_

volSymmTensorField	R_

volScalarField	nut_

Protected Attributes inherited from RASModel< BasicMomentumTransportModel >
dictionary	RASDict_
	RAS 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	kMin_
	Lower limit of k. More...

dimensionedScalar	nutMaxCoeff_
	Upper limit coefficient for nut. More...

autoPtr< laminarModels::generalisedNewtonianViscosityModel >	viscosityModel_
	Run-time selectable generalised Newtonian viscosity model. More...

Additional Inherited Members
Static Public Member Functions inherited from RASModel< BasicMomentumTransportModel >
static autoPtr< RASModel >	New (const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity)
	Return a reference to the selected RAS model. More...

Detailed Description

template<class BasicMomentumTransportModel>
class Foam::RASModels::SSG< BasicMomentumTransportModel >

Speziale, Sarkar and Gatski Reynolds-stress turbulence model for incompressible and compressible flows.

Reference:

    Speziale, C. G., Sarkar, S., & Gatski, T. B. (1991).
    Modelling the pressure–strain correlation of turbulence:
    an invariant dynamical systems approach.
    Journal of Fluid Mechanics, 227, 245-272.

Including the generalised gradient diffusion model of Daly and Harlow:

    Daly, B. J., & Harlow, F. H. (1970).
    Transport equations in turbulence.
    Physics of Fluids (1958-1988), 13(11), 2634-2649.

The default model coefficients are:

    SSGCoeffs
    {
        Cmu             0.09;

        C1              3.4;
        C1s             1.8;
        C2              4.2;
        C3              0.8;
        C3s             1.3;
        C4              1.25;
        C5              0.4;

        Ceps1           1.44;
        Ceps2           1.92;
        Cs              0.25;
        Ceps            0.15;

        couplingFactor  0.0;
    }

Source files

SSG.H
SSG.C

Definition at line 92 of file SSG.H.

Member Typedef Documentation

◆ alphaField

typedef BasicMomentumTransportModel::alphaField alphaField

Definition at line 137 of file SSG.H.

◆ rhoField

typedef BasicMomentumTransportModel::rhoField rhoField

Definition at line 138 of file SSG.H.

Constructor & Destructor Documentation

◆ SSG() [1/2]

SSG	(	const alphaField &	alpha,
		const rhoField &	rho,
		const volVectorField &	U,
		const surfaceScalarField &	alphaRhoPhi,
		const surfaceScalarField &	phi,
		const viscosity &	viscosity,
		const word &	type = `typeName`
	)