kOmegaSST Class Reference

Implementation of the k-omega-SST turbulence model for compressible flows. More...

Inheritance diagram for kOmegaSST:

Collaboration diagram for kOmegaSST:


Public Member Functions
	TypeName ("kOmegaSST")
	Runtime type information.
	kOmegaSST (const volScalarField &rho, const volVectorField &U, const surfaceScalarField &phi, const basicThermo &thermophysicalModel)
	Construct from components.
virtual	~kOmegaSST ()
	Destructor.
tmp< volScalarField >	DkEff (const volScalarField &F1) const
	Return the effective diffusivity for k.
tmp< volScalarField >	DomegaEff (const volScalarField &F1) const
	Return the effective diffusivity for omega.
virtual tmp< volScalarField >	mut () const
	Return the turbulence viscosity.
virtual tmp< volScalarField >	alphaEff () const
	Return the effective turbulent thermal diffusivity.
virtual tmp< volScalarField >	k () const
	Return the turbulence kinetic energy.
virtual tmp< volScalarField >	omega () const
virtual tmp< volScalarField >	epsilon () const
	Return the turbulence kinetic energy dissipation rate.
virtual tmp< volSymmTensorField >	R () const
	Return the Reynolds stress tensor.
virtual tmp< volSymmTensorField >	devRhoReff () const
	Return the effective stress tensor including the laminar stress.
virtual tmp< fvVectorMatrix >	divDevRhoReff (volVectorField &U) const
	Return the source term for the momentum equation.
virtual void	correct ()
	Solve the turbulence equations and correct the turbulence viscosity.
virtual bool	read ()
	Read RASProperties dictionary.

Detailed Description

Implementation of the k-omega-SST turbulence model for compressible flows.

Turbulence model described in:

    Menter, F., Esch, T.
    "Elements of Industrial Heat Transfer Prediction"
    16th Brazilian Congress of Mechanical Engineering (COBEM),
    Nov. 2001

Note that this implementation is written in terms of alpha diffusion coefficients rather than the more traditional sigma (alpha = 1/sigma) so that the blending can be applied to all coefficuients in a consistent manner. The paper suggests that sigma is blended but this would not be consistent with the blending of the k-epsilon and k-omega models.

Also note that the error in the last term of equation (2) relating to sigma has been corrected.

Wall-functions are applied in this implementation by using equations (14) to specify the near-wall omega as appropriate.

The blending functions (15) and (16) are not currently used because of the uncertainty in their origin, range of applicability and that is y+ becomes sufficiently small blending u_tau in this manner clearly becomes nonsense.

The default model coefficients correspond to the following:

    kOmegaSSTCoeffs
    {
        alphaK1     0.85034;
        alphaK2     1.0;
        alphaOmega1 0.5;
        alphaOmega2 0.85616;
        Prt         1.0;    // only for compressible
        beta1       0.075;
        beta2       0.0828;
        betaStar    0.09;
        gamma1      0.5532;
        gamma2      0.4403;
        a1          0.31;
        c1          10.0;
    }

Source files

Definition at line 95 of file kOmegaSST.H.

Constructor & Destructor Documentation

kOmegaSST	(	const volScalarField &	rho,
		const volVectorField &	U,
		const surfaceScalarField &	phi,
		const basicThermo &	thermophysicalModel
	)

Construct from components.

Definition at line 83 of file kOmegaSST.C.

virtual ~kOmegaSST ( ) [inline, virtual]

Destructor.

Definition at line 192 of file kOmegaSST.H.

Member Function Documentation

TypeName ( "kOmegaSST" )

Runtime type information.

tmp<volScalarField> DkEff ( const volScalarField & F1 ) const [inline]

Return the effective diffusivity for k.

Definition at line 199 of file kOmegaSST.H.

References kOmegaSST::DkEff(), and mu.

Referenced by kOmegaSST::DkEff().

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tmp<volScalarField> DomegaEff ( const volScalarField & F1 ) const [inline]

Return the effective diffusivity for omega.

Definition at line 208 of file kOmegaSST.H.

virtual tmp<volScalarField> mut ( ) const [inline, virtual]

Return the turbulence viscosity.

Implements RASModel.

Definition at line 216 of file kOmegaSST.H.

virtual tmp<volScalarField> alphaEff ( ) const [inline, virtual]

Return the effective turbulent thermal diffusivity.

Implements RASModel.

Definition at line 222 of file kOmegaSST.H.

virtual tmp<volScalarField> k ( ) const [inline, virtual]

Return the turbulence kinetic energy.

Implements RASModel.

Definition at line 231 of file kOmegaSST.H.

virtual tmp<volScalarField> omega ( ) const [inline, virtual]

Definition at line 236 of file kOmegaSST.H.

virtual tmp<volScalarField> epsilon ( ) const [inline, virtual]

Return the turbulence kinetic energy dissipation rate.

Implements RASModel.

Definition at line 242 of file kOmegaSST.H.

tmp< volSymmTensorField > R ( ) const [virtual]

Return the Reynolds stress tensor.

Implements RASModel.

Definition at line 264 of file kOmegaSST.C.

References RASModel::printCoeffs().

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tmp< volSymmTensorField > devRhoReff ( ) const [virtual]

Return the effective stress tensor including the laminar stress.

Implements RASModel.

Definition at line 285 of file kOmegaSST.C.

tmp< fvVectorMatrix > divDevRhoReff ( volVectorField & U ) const [virtual]

Return the source term for the momentum equation.

Implements RASModel.

Definition at line 305 of file kOmegaSST.C.

void correct ( ) [virtual]

Solve the turbulence equations and correct the turbulence viscosity.

Implements RASModel.

Definition at line 340 of file kOmegaSST.C.

bool read ( ) [virtual]

Read RASProperties dictionary.

Implements RASModel.

Definition at line 314 of file kOmegaSST.C.

References Foam::dev2(), Foam::fvc::div(), Foam::fvc::grad(), Foam::fvm::laplacian(), muEff(), and Foam::T().

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The documentation for this class was generated from the following files:

src/turbulenceModels/compressible/RAS/kOmegaSST/kOmegaSST.H
src/turbulenceModels/compressible/RAS/kOmegaSST/kOmegaSST.C

kOmegaSST Class Reference

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation