Launder and Sharma low-Reynolds k-epsilon turbulence model for incompressible and compressible and combusting flows including rapid distortion theory (RDT) based compression term. More...

#include <LaunderSharmaKE.H>

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Public Types
typedef BasicTurbulenceModel::alphaField	alphaField
typedef BasicTurbulenceModel::rhoField	rhoField
typedef BasicTurbulenceModel::transportModel	transportModel
Public Types inherited from eddyViscosity< RASModel< BasicTurbulenceModel > >
typedef BasicTurbulenceModel::alphaField	alphaField
typedef BasicTurbulenceModel::rhoField	rhoField
typedef BasicTurbulenceModel::transportModel	transportModel
Public Types inherited from linearViscousStress< BasicTurbulenceModel >
typedef BasicTurbulenceModel::alphaField	alphaField
typedef BasicTurbulenceModel::rhoField	rhoField
typedef BasicTurbulenceModel::transportModel	transportModel

Public Member Functions
	TypeName ("LaunderSharmaKE")
	Runtime type information.
	LaunderSharmaKE (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.
virtual	~LaunderSharmaKE ()=default
	Destructor.
virtual bool	read ()
	Re-read model coefficients if they have changed.
tmp< volScalarField >	DkEff () const
	Return the effective diffusivity for k.
tmp< volScalarField >	DepsilonEff () const
	Return the effective diffusivity for epsilon.
virtual tmp< volScalarField >	k () const
	Return the turbulence kinetic energy.
virtual tmp< volScalarField >	epsilon () const
	Return the turbulence kinetic energy dissipation rate.
virtual void	correct ()
	Solve the turbulence equations and correct the turbulence viscosity.
Public Member Functions inherited from eddyViscosity< RASModel< 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.
virtual	~eddyViscosity ()=default
	Destructor.
virtual tmp< volScalarField >	nut () const
	Return the turbulence viscosity.
virtual tmp< volSymmTensorField >	R () const
	Return the Reynolds stress tensor.
virtual void	validate ()
	Validate the turbulence fields after construction.
Public Member Functions inherited from linearViscousStress< 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.
virtual	~linearViscousStress ()=default
	Destructor.
virtual tmp< volSymmTensorField >	devRhoReff () const
	Return the effective stress tensor.
virtual tmp< volSymmTensorField >	devRhoReff (const volVectorField &U) const
	Return the effective stress tensor based on a given velocity field.
virtual tmp< fvVectorMatrix >	divDevRhoReff (volVectorField &U) const
	Return the source term for the momentum equation.
virtual tmp< fvVectorMatrix >	divDevRhoReff (const volScalarField &rho, volVectorField &U) const
	Return the source term for the momentum equation.

Protected Member Functions
tmp< volScalarField >	fMu () const
tmp< volScalarField >	f2 () const
virtual void	correctNut ()
virtual tmp< fvScalarMatrix >	kSource () const
virtual tmp< fvScalarMatrix >	epsilonSource () const

Protected Attributes
dimensionedScalar	Cmu_
dimensionedScalar	C1_
dimensionedScalar	C2_
dimensionedScalar	C3_
dimensionedScalar	sigmak_
dimensionedScalar	sigmaEps_
volScalarField	k_
volScalarField	epsilon_
Protected Attributes inherited from eddyViscosity< RASModel< BasicTurbulenceModel > >
volScalarField	nut_

Detailed Description

template<class BasicTurbulenceModel>
class Foam::RASModels::LaunderSharmaKE< BasicTurbulenceModel >

Launder and Sharma low-Reynolds k-epsilon turbulence model for incompressible and compressible and combusting flows including rapid distortion theory (RDT) based compression term.

References:

    Launder, B. E., & Sharma, B. I. (1974).
    Application of the energy-dissipation model of turbulence to the
    calculation of flow near a spinning disc.
    Letters in heat and mass transfer, 1(2), 131-137.

    For the RDT-based compression term:
    El Tahry, S. H. (1983).
    k-epsilon equation for compressible reciprocating engine flows.
    Journal of Energy, 7(4), 345-353.

The default model coefficients are

    LaunderSharmaKECoeffs
    {
        Cmu         0.09;
        C1          1.44;
        C2          1.92;
        C3          -0.33;
        alphah      1.0;    // only for compressible
        alphahk     1.0;    // only for compressible
        alphaEps    0.76923;
    }

Source files

Definition at line 83 of file LaunderSharmaKE.H.

Member Typedef Documentation

◆ alphaField

template<class BasicTurbulenceModel>

typedef BasicTurbulenceModel::alphaField alphaField

Definition at line 132 of file LaunderSharmaKE.H.

◆ rhoField

template<class BasicTurbulenceModel>

typedef BasicTurbulenceModel::rhoField rhoField

Definition at line 133 of file LaunderSharmaKE.H.

◆ transportModel

template<class BasicTurbulenceModel>

typedef BasicTurbulenceModel::transportModel transportModel

Definition at line 134 of file LaunderSharmaKE.H.

Constructor & Destructor Documentation

◆ LaunderSharmaKE()

template<class BasicTurbulenceModel>

LaunderSharmaKE	(	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.

Definition at line 87 of file LaunderSharmaKE.C.

References alpha, Foam::bound(), C1_, C2_, C3_, Cmu_, eddyViscosity< RASModel< BasicTurbulenceModel > >::eddyViscosity(), epsilon_, Foam::GlobalIOList< Tuple2< scalar, vector > >::typeName, k_, phi, rho, sigmaEps_, sigmak_, timeName, and U.

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◆ ~LaunderSharmaKE()

template<class BasicTurbulenceModel>

virtual ~LaunderSharmaKE ( )

virtualdefault

Destructor.

Member Function Documentation

◆ fMu()

template<class BasicTurbulenceModel>

tmp< volScalarField > fMu ( ) const

protected

Definition at line 36 of file LaunderSharmaKE.C.

References epsilon_, Foam::exp(), k_, nu, and Foam::sqr().

Referenced by correctNut().

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◆ f2()

template<class BasicTurbulenceModel>

tmp< volScalarField > f2 ( ) const

protected

Definition at line 43 of file LaunderSharmaKE.C.

References epsilon_, Foam::exp(), k_, Foam::min(), nu, and Foam::sqr().

Referenced by correct().

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◆ correctNut()

template<class BasicTurbulenceModel>

void correctNut ( )

protectedvirtual

Implements eddyViscosity< RASModel< BasicTurbulenceModel > >.

Definition at line 52 of file LaunderSharmaKE.C.

References Cmu_, optionList::correct(), epsilon_, fMu(), k_, options::New(), eddyViscosity< RASModel< BasicTurbulenceModel > >::nut_, and Foam::sqr().

Referenced by correct().

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◆ kSource()

template<class BasicTurbulenceModel>

tmp< fvScalarMatrix > kSource ( ) const

protectedvirtual

Definition at line 63 of file LaunderSharmaKE.C.

References Foam::dimTime, Foam::dimVolume, k_, and tmp< T >::New().

Referenced by correct().

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◆ epsilonSource()

template<class BasicTurbulenceModel>

tmp< fvScalarMatrix > epsilonSource ( ) const

protectedvirtual

Definition at line 74 of file LaunderSharmaKE.C.

References Foam::dimTime, Foam::dimVolume, epsilon_, and tmp< T >::New().

Referenced by correct().

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◆ TypeName()

template<class BasicTurbulenceModel>

TypeName ( "LaunderSharmaKE< BasicTurbulenceModel >" )

Runtime type information.

◆ read()

template<class BasicTurbulenceModel>

bool read ( )

virtual

Re-read model coefficients if they have changed.

Implements eddyViscosity< RASModel< BasicTurbulenceModel > >.

Definition at line 205 of file LaunderSharmaKE.C.

References C1_, C2_, C3_, Cmu_, eddyViscosity< RASModel< BasicTurbulenceModel > >::eddyViscosity(), read(), sigmaEps_, and sigmak_.

Referenced by read().

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◆ DkEff()

template<class BasicTurbulenceModel>

tmp< volScalarField > DkEff ( ) const

inline

Return the effective diffusivity for k.

Definition at line 177 of file LaunderSharmaKE.H.

Referenced by correct().

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◆ DepsilonEff()

template<class BasicTurbulenceModel>

tmp< volScalarField > DepsilonEff ( ) const

inline

Return the effective diffusivity for epsilon.

Definition at line 192 of file LaunderSharmaKE.H.

Referenced by correct().

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◆ k()

template<class BasicTurbulenceModel>

virtual tmp< volScalarField > k ( ) const

inlinevirtual

Return the turbulence kinetic energy.

Implements eddyViscosity< RASModel< BasicTurbulenceModel > >.

Definition at line 207 of file LaunderSharmaKE.H.

◆ epsilon()

template<class BasicTurbulenceModel>

virtual tmp< volScalarField > epsilon ( ) const

inlinevirtual

Return the turbulence kinetic energy dissipation rate.

Definition at line 215 of file LaunderSharmaKE.H.

◆ correct()

template<class BasicTurbulenceModel>

void correct ( )

virtual

Solve the turbulence equations and correct the turbulence viscosity.

Implements eddyViscosity< RASModel< BasicTurbulenceModel > >.

Definition at line 224 of file LaunderSharmaKE.C.

References Foam::fvc::absolute(), alpha, Foam::bound(), C1_, C2_, C3_, tmp< T >::clear(), correct(), correctNut(), D, Foam::fvm::ddt(), DepsilonEff(), Foam::devTwoSymm(), Foam::fvc::div(), Foam::fvm::div(), divU, DkEff(), eddyViscosity< RASModel< BasicTurbulenceModel > >::eddyViscosity(), epsilon_, epsilonSource(), f2(), fvOptions, Foam::fvc::grad(), k_, kSource(), Foam::fvm::laplacian(), Foam::magSqr(), Foam::fvc::magSqrGradGrad(), options::New(), nu, eddyViscosity< RASModel< BasicTurbulenceModel > >::nut(), eddyViscosity< RASModel< BasicTurbulenceModel > >::nut_, phi, tmp< T >::ref(), rho, solve(), Foam::fvm::Sp(), Foam::sqrt(), Foam::fvm::SuSp(), and U.

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Member Data Documentation

◆ Cmu_

template<class BasicTurbulenceModel>

dimensionedScalar Cmu_

protected

Definition at line 106 of file LaunderSharmaKE.H.

Referenced by correctNut(), LaunderSharmaKE(), and read().

◆ C1_

template<class BasicTurbulenceModel>

dimensionedScalar C1_

protected

Definition at line 107 of file LaunderSharmaKE.H.

Referenced by correct(), LaunderSharmaKE(), and read().

◆ C2_

template<class BasicTurbulenceModel>

dimensionedScalar C2_

protected

Definition at line 108 of file LaunderSharmaKE.H.

Referenced by correct(), LaunderSharmaKE(), and read().

◆ C3_

template<class BasicTurbulenceModel>

dimensionedScalar C3_

protected

Definition at line 109 of file LaunderSharmaKE.H.

Referenced by correct(), LaunderSharmaKE(), and read().

◆ sigmak_

template<class BasicTurbulenceModel>

dimensionedScalar sigmak_

protected

Definition at line 110 of file LaunderSharmaKE.H.

Referenced by LaunderSharmaKE(), and read().

◆ sigmaEps_

template<class BasicTurbulenceModel>

dimensionedScalar sigmaEps_

protected

Definition at line 111 of file LaunderSharmaKE.H.

Referenced by LaunderSharmaKE(), and read().

◆ k_

template<class BasicTurbulenceModel>

volScalarField k_

protected

Definition at line 116 of file LaunderSharmaKE.H.

Referenced by correct(), correctNut(), f2(), fMu(), kSource(), and LaunderSharmaKE().

◆ epsilon_

template<class BasicTurbulenceModel>

volScalarField epsilon_

protected

Definition at line 117 of file LaunderSharmaKE.H.

Referenced by correct(), correctNut(), epsilonSource(), f2(), fMu(), and LaunderSharmaKE().

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

src/TurbulenceModels/turbulenceModels/RAS/LaunderSharmaKE/LaunderSharmaKE.H
src/TurbulenceModels/turbulenceModels/RAS/LaunderSharmaKE/LaunderSharmaKE.C

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

◆ alphaField

◆ rhoField

◆ transportModel

Constructor & Destructor Documentation

◆ LaunderSharmaKE()

◆ ~LaunderSharmaKE()

Member Function Documentation

◆ fMu()

◆ f2()

◆ correctNut()

◆ kSource()

◆ epsilonSource()

◆ TypeName()

◆ read()

◆ DkEff()

◆ DepsilonEff()

◆ k()

◆ epsilon()

◆ correct()

Member Data Documentation

◆ Cmu_

◆ C1_

◆ C2_

◆ C3_

◆ sigmak_

◆ sigmaEps_

◆ k_

◆ epsilon_