Spalart-Allmaras one-eqn mixing-length model for incompressible and compressible external flows. More...

Inheritance diagram for SpalartAllmaras< BasicMomentumTransportModel >:

Collaboration diagram for SpalartAllmaras< BasicMomentumTransportModel >:

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Public Types
typedef BasicMomentumTransportModel::alphaField	alphaField

typedef BasicMomentumTransportModel::rhoField	rhoField

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

typedef BasicMomentumTransportModel::rhoField	rhoField

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

typedef BasicMomentumTransportModel::rhoField	rhoField

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

	SpalartAllmaras (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...

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

virtual	~SpalartAllmaras ()
	Destructor. More...

virtual bool	read ()
	Read RASProperties dictionary. More...

tmp< volScalarField >	DnuTildaEff () const
	Return the effective diffusivity for nuTilda. 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...

virtual void	correct ()
	Solve the turbulence equations and correct the turbulence viscosity. More...

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

Public Member Functions inherited from eddyViscosity< RASModel< BasicMomentumTransportModel > >
	eddyViscosity (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	~eddyViscosity ()
	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 void	validate ()
	Validate the turbulence fields after construction. More...

Public Member Functions inherited from linearViscousStress< BasicMomentumTransportModel >
	linearViscousStress (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	~linearViscousStress ()
	Destructor. 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...

Protected Member Functions
tmp< volScalarField >	chi () const

tmp< volScalarField >	fv1 (const volScalarField &chi) const

tmp< volScalarField::Internal >	fv2 (const volScalarField::Internal &chi, const volScalarField::Internal &fv1) const

tmp< volScalarField::Internal >	Stilda (const volScalarField::Internal &chi, const volScalarField::Internal &fv1) const

tmp< volScalarField::Internal >	fw (const volScalarField::Internal &Stilda) const

void	correctNut (const volScalarField &fv1)

virtual void	correctNut ()

Protected Attributes
dimensionedScalar	sigmaNut_

dimensionedScalar	kappa_

dimensionedScalar	Cb1_

dimensionedScalar	Cb2_

dimensionedScalar	Cw1_

dimensionedScalar	Cw2_

dimensionedScalar	Cw3_

dimensionedScalar	Cv1_

dimensionedScalar	Cs_

volScalarField	nuTilda_

const volScalarField::Internal &	y_
	Wall distance. More...

Protected Attributes inherited from eddyViscosity< RASModel< BasicMomentumTransportModel > >
volScalarField	nut_

Detailed Description

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

Spalart-Allmaras one-eqn mixing-length model for incompressible and compressible external flows.

Reference:

    Spalart, P.R., & Allmaras, S.R. (1994).
    A one-equation turbulence model for aerodynamic flows.
    La Recherche Aerospatiale, 1, 5-21.

The model is implemented without the trip-term and hence the ft2 term is not needed.

It is necessary to limit the Stilda generation term as the model generates unphysical results if this term becomes negative which occurs for complex flow. Several approaches have been proposed to limit Stilda but it is not clear which is the most appropriate. Here the limiter proposed by Spalart is implemented in which Stilda is clipped at Cs*Omega with the default value of Cs = 0.3.

The default model coefficients are

    SpalartAllmarasCoeffs
    {
        Cb1         0.1355;
        Cb2         0.622;
        Cw2         0.3;
        Cw3         2.0;
        Cv1         7.1;
        Cs          0.3;
        sigmaNut    0.66666;
        kappa       0.41;
    }

Source files

Definition at line 85 of file SpalartAllmaras.H.

Member Typedef Documentation

◆ alphaField

typedef BasicMomentumTransportModel::alphaField alphaField

Definition at line 147 of file SpalartAllmaras.H.

◆ rhoField

typedef BasicMomentumTransportModel::rhoField rhoField

Definition at line 148 of file SpalartAllmaras.H.

Constructor & Destructor Documentation

◆ SpalartAllmaras() [1/2]

SpalartAllmaras	(	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.

Definition at line 159 of file SpalartAllmaras.C.

References Foam::type().

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◆ SpalartAllmaras() [2/2]

SpalartAllmaras ( const SpalartAllmaras< BasicMomentumTransportModel > & )

delete

Disallow default bitwise copy construction.

◆ ~SpalartAllmaras()

virtual ~SpalartAllmaras ( )

inlinevirtual

Destructor.

Definition at line 174 of file SpalartAllmaras.H.

Member Function Documentation

◆ chi()

tmp< volScalarField > chi

protected

Definition at line 42 of file SpalartAllmaras.C.

References GeometricField< Type, PatchField, GeoMesh >::New(), and Foam::typedName().

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◆ fv1()

tmp< volScalarField > fv1 ( const volScalarField & chi ) const

protected

Definition at line 49 of file SpalartAllmaras.C.

References GeometricField< Type, PatchField, GeoMesh >::New(), Foam::pow3(), and Foam::typedName().

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◆ fv2()

tmp< volScalarField::Internal > fv2	(	const volScalarField::Internal &	chi,
		const volScalarField::Internal &	fv1
	)		const

protected

Definition at line 60 of file SpalartAllmaras.C.

References DimensionedField< Type, GeoMesh >::New(), and Foam::typedName().

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◆ Stilda()

tmp< volScalarField::Internal > Stilda	(	const volScalarField::Internal &	chi,
		const volScalarField::Internal &	fv1
	)		const

protected

Definition at line 76 of file SpalartAllmaras.C.

References Foam::fvc::grad(), Foam::mag(), Foam::max(), DimensionedField< Type, GeoMesh >::New(), Foam::skew(), Foam::sqr(), Foam::sqrt(), and Foam::typedName().

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◆ fw()

tmp< volScalarField::Internal > fw ( const volScalarField::Internal & Stilda ) const

protected

Definition at line 104 of file SpalartAllmaras.C.

References DimensionedField< Type, GeoMesh >::dimensions(), Foam::max(), Foam::min(), DimensionedField< Type, GeoMesh >::New(), Foam::pow(), Foam::pow6(), Foam::sqr(), and Foam::typedName().

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◆ correctNut() [1/2]

void correctNut ( const volScalarField & fv1 )

protected

Definition at line 138 of file SpalartAllmaras.C.

References GeometricField< Type, PatchField, GeoMesh >::correctBoundaryConditions(), and dictionary::New().

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◆ correctNut() [2/2]

void correctNut

protectedvirtual

Implements eddyViscosity< RASModel< BasicMomentumTransportModel > >.

Definition at line 150 of file SpalartAllmaras.C.

◆ TypeName()

TypeName ( "SpalartAllmaras< BasicMomentumTransportModel >" )

Runtime type information.

◆ read()

bool read

virtual

Read RASProperties dictionary.

Implements eddyViscosity< RASModel< BasicMomentumTransportModel > >.

Definition at line 281 of file SpalartAllmaras.C.

References Foam::read(), dimensioned< Type >::readIfPresent(), and Foam::sqr().

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◆ DnuTildaEff()

tmp< volScalarField > DnuTildaEff

Return the effective diffusivity for nuTilda.

Definition at line 307 of file SpalartAllmaras.C.

References GeometricField< Type, PatchField, GeoMesh >::New().

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◆ k()

tmp< volScalarField > k

virtual

Return the turbulence kinetic energy.

Implements eddyViscosity< RASModel< BasicMomentumTransportModel > >.

Definition at line 318 of file SpalartAllmaras.C.

References GeometricField< Type, PatchField, GeoMesh >::New().

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◆ epsilon()

tmp< volScalarField > epsilon

virtual

Return the turbulence kinetic energy dissipation rate.

Definition at line 331 of file SpalartAllmaras.C.

References Foam::endl(), GeometricField< Type, PatchField, GeoMesh >::New(), and WarningInFunction.

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◆ omega()

tmp< volScalarField > omega

virtual

Return the turbulence specific dissipation rate.

Definition at line 349 of file SpalartAllmaras.C.

References Foam::dimless, Foam::dimTime, Foam::endl(), GeometricField< Type, PatchField, GeoMesh >::New(), and WarningInFunction.

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◆ correct()

void correct

virtual

Solve the turbulence equations and correct the turbulence viscosity.

Implements eddyViscosity< RASModel< BasicMomentumTransportModel > >.

Definition at line 366 of file SpalartAllmaras.C.

References alpha(), Foam::bound(), fvConstraints::constrain(), Foam::MULES::correct(), Foam::fvm::ddt(), Foam::fvm::div(), fvConstraints(), fvModels(), Foam::fvc::grad(), Foam::fvm::laplacian(), Foam::magSqr(), dictionary::New(), tmp< T >::ref(), rho, Foam::solve(), Foam::fvm::Sp(), and Foam::sqr().

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◆ operator=()

void operator= ( const SpalartAllmaras< BasicMomentumTransportModel > & )

delete

Disallow default bitwise assignment.

Member Data Documentation

◆ sigmaNut_

dimensionedScalar sigmaNut_

protected

Definition at line 96 of file SpalartAllmaras.H.

◆ kappa_

dimensionedScalar kappa_

protected

Definition at line 97 of file SpalartAllmaras.H.

◆ Cb1_

dimensionedScalar Cb1_

protected

Definition at line 99 of file SpalartAllmaras.H.

◆ Cb2_

dimensionedScalar Cb2_

protected

Definition at line 100 of file SpalartAllmaras.H.

◆ Cw1_

dimensionedScalar Cw1_

protected

Definition at line 101 of file SpalartAllmaras.H.

◆ Cw2_

dimensionedScalar Cw2_

protected

Definition at line 102 of file SpalartAllmaras.H.

◆ Cw3_

dimensionedScalar Cw3_

protected

Definition at line 103 of file SpalartAllmaras.H.

◆ Cv1_

dimensionedScalar Cv1_

protected

Definition at line 104 of file SpalartAllmaras.H.

◆ Cs_

dimensionedScalar Cs_

protected

Definition at line 105 of file SpalartAllmaras.H.

◆ nuTilda_

volScalarField nuTilda_

protected

Definition at line 110 of file SpalartAllmaras.H.

◆ y_

const volScalarField::Internal& y_

protected

Wall distance.

Note: different to wall distance in parent RASModel which is for near-wall cells only

Definition at line 115 of file SpalartAllmaras.H.

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

src/MomentumTransportModels/momentumTransportModels/RAS/SpalartAllmaras/SpalartAllmaras.H
src/MomentumTransportModels/momentumTransportModels/RAS/SpalartAllmaras/SpalartAllmaras.C

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

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

Member Typedef Documentation

◆ alphaField

◆ rhoField

Constructor & Destructor Documentation

◆ SpalartAllmaras() [1/2]

◆ SpalartAllmaras() [2/2]

◆ ~SpalartAllmaras()

Member Function Documentation

◆ chi()

◆ fv1()

◆ fv2()

◆ Stilda()

◆ fw()

◆ correctNut() [1/2]

◆ correctNut() [2/2]

◆ TypeName()

◆ read()

◆ DnuTildaEff()

◆ k()

◆ epsilon()

◆ omega()

◆ correct()

◆ operator=()

Member Data Documentation

◆ sigmaNut_

◆ kappa_

◆ Cb1_

◆ Cb2_

◆ Cw1_

◆ Cw2_

◆ Cw3_

◆ Cv1_

◆ Cs_

◆ nuTilda_

◆ y_

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