Public Types | Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
LaunderSharmaKE< BasicTurbulenceModel > Class Template Reference

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...

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

Public Member Functions

 TypeName ("LaunderSharmaKE")
 Runtime type information. More...
 
 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. More...
 
virtual ~LaunderSharmaKE ()
 Destructor. More...
 
virtual bool read ()
 Re-read model coefficients if they have changed. More...
 
tmp< volScalarFieldDkEff () const
 Return the effective diffusivity for k. More...
 
tmp< volScalarFieldDepsilonEff () const
 Return the effective diffusivity for epsilon. More...
 
virtual tmp< volScalarFieldk () const
 Return the turbulence kinetic energy. More...
 
virtual tmp< volScalarFieldepsilon () const
 Return the turbulence kinetic energy dissipation rate. More...
 
virtual void correct ()
 Solve the turbulence equations and correct the turbulence viscosity. More...
 
- 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. More...
 
virtual ~eddyViscosity ()
 Destructor. More...
 
volScalarFieldevNut ()
 Return non-const access to the turbulence viscosity. More...
 
virtual tmp< volScalarFieldnut () const
 Return the turbulence viscosity. More...
 
virtual tmp< scalarFieldnut (const label patchi) const
 Return the turbulence viscosity on patch. More...
 
virtual tmp< volSymmTensorFieldR () const
 Return the Reynolds stress tensor. More...
 
- Public Member Functions inherited from linearViscousStress< RASModel< 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 ()
 Destructor. More...
 
virtual tmp< volSymmTensorFielddevRhoReff () const
 Return the effective stress tensor. More...
 
virtual tmp< fvVectorMatrixdivDevRhoReff (volVectorField &U) const
 Return the source term for the momentum equation. More...
 
virtual tmp< fvVectorMatrixdivDevRhoReff (const volScalarField &rho, volVectorField &U) const
 Return the source term for the momentum equation. More...
 
- Public Member Functions inherited from RASModel< BasicTurbulenceModel >
 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 transportModel &transport, const word &propertiesName ),(alpha, rho, U, alphaRhoPhi, phi, transport, propertiesName))
 
 RASModel (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 ~RASModel ()
 Destructor. More...
 
const dimensionedScalarkMin () const
 Return the lower allowable limit for k (default: SMALL) More...
 
const dimensionedScalarepsilonMin () const
 Return the lower allowable limit for epsilon (default: SMALL) More...
 
const dimensionedScalaromegaMin () const
 Return the lower allowable limit for omega (default: SMALL) More...
 
dimensionedScalarkMin ()
 Allow kMin to be changed. More...
 
dimensionedScalarepsilonMin ()
 Allow epsilonMin to be changed. More...
 
dimensionedScalaromegaMin ()
 Allow omegaMin to be changed. More...
 
virtual const dictionarycoeffDict () const
 Const access to the coefficients dictionary. More...
 
virtual tmp< volScalarFieldnuEff () const
 Return the effective viscosity. More...
 
virtual tmp< scalarFieldnuEff (const label patchi) const
 Return the effective viscosity on patch. More...
 

Protected Member Functions

tmp< volScalarFieldfMu () const
 
tmp< volScalarFieldf2 () const
 
virtual void correctNut ()
 
virtual tmp< fvScalarMatrixkSource () const
 
virtual tmp< fvScalarMatrixepsilonSource () const
 
- Protected Member Functions inherited from RASModel< BasicTurbulenceModel >
virtual void printCoeffs (const word &type)
 Print model coefficients. More...
 

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_
 
- Protected Attributes inherited from RASModel< BasicTurbulenceModel >
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 epsilonMin_
 Lower limit of epsilon. More...
 
dimensionedScalar omegaMin_
 Lower limit for omega. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from RASModel< BasicTurbulenceModel >
static autoPtr< RASModelNew (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 RAS model. More...
 

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 84 of file LaunderSharmaKE.H.

Member Typedef Documentation

typedef BasicTurbulenceModel::alphaField alphaField

Definition at line 127 of file LaunderSharmaKE.H.

typedef BasicTurbulenceModel::rhoField rhoField

Definition at line 128 of file LaunderSharmaKE.H.

typedef BasicTurbulenceModel::transportModel transportModel

Definition at line 129 of file LaunderSharmaKE.H.

Constructor & Destructor Documentation

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 98 of file LaunderSharmaKE.C.

References Foam::bound().

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virtual ~LaunderSharmaKE ( )
inlinevirtual

Destructor.

Definition at line 153 of file LaunderSharmaKE.H.

References LaunderSharmaKE< BasicTurbulenceModel >::read().

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Member Function Documentation

tmp< volScalarField > fMu ( ) const
protected

Definition at line 39 of file LaunderSharmaKE.C.

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

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tmp< volScalarField > f2 ( ) const
protected

Definition at line 46 of file LaunderSharmaKE.C.

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

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void correctNut ( )
protectedvirtual

Implements eddyViscosity< RASModel< BasicTurbulenceModel > >.

Definition at line 55 of file LaunderSharmaKE.C.

References Foam::sqr().

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tmp< fvScalarMatrix > kSource ( ) const
protectedvirtual

Definition at line 65 of file LaunderSharmaKE.C.

References Foam::dimTime, and Foam::dimVolume.

tmp< fvScalarMatrix > epsilonSource ( ) const
protectedvirtual

Definition at line 80 of file LaunderSharmaKE.C.

References Foam::dimTime, and Foam::dimVolume.

TypeName ( "LaunderSharmaKE< BasicTurbulenceModel >"  )

Runtime type information.

bool read ( )
virtual

Re-read model coefficients if they have changed.

Implements eddyViscosity< RASModel< BasicTurbulenceModel > >.

Definition at line 216 of file LaunderSharmaKE.C.

References Foam::read().

Referenced by LaunderSharmaKE< BasicTurbulenceModel >::~LaunderSharmaKE().

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tmp<volScalarField> DkEff ( ) const
inline

Return the effective diffusivity for k.

Definition at line 163 of file LaunderSharmaKE.H.

References nu, and eddyViscosity< RASModel< BasicTurbulenceModel > >::nut_.

tmp<volScalarField> DepsilonEff ( ) const
inline

Return the effective diffusivity for epsilon.

Definition at line 176 of file LaunderSharmaKE.H.

References nu, and eddyViscosity< RASModel< BasicTurbulenceModel > >::nut_.

virtual tmp<volScalarField> k ( ) const
inlinevirtual

Return the turbulence kinetic energy.

Implements eddyViscosity< RASModel< BasicTurbulenceModel > >.

Definition at line 189 of file LaunderSharmaKE.H.

References LaunderSharmaKE< BasicTurbulenceModel >::k_.

virtual tmp<volScalarField> epsilon ( ) const
inlinevirtual

Return the turbulence kinetic energy dissipation rate.

Definition at line 195 of file LaunderSharmaKE.H.

References LaunderSharmaKE< BasicTurbulenceModel >::correct(), and LaunderSharmaKE< BasicTurbulenceModel >::epsilon_.

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void correct ( )
virtual

Member Data Documentation

dimensionedScalar Cmu_
protected

Definition at line 101 of file LaunderSharmaKE.H.

dimensionedScalar C1_
protected

Definition at line 102 of file LaunderSharmaKE.H.

dimensionedScalar C2_
protected

Definition at line 103 of file LaunderSharmaKE.H.

dimensionedScalar C3_
protected

Definition at line 104 of file LaunderSharmaKE.H.

dimensionedScalar sigmak_
protected

Definition at line 105 of file LaunderSharmaKE.H.

dimensionedScalar sigmaEps_
protected

Definition at line 106 of file LaunderSharmaKE.H.

volScalarField k_
protected

Definition at line 111 of file LaunderSharmaKE.H.

Referenced by LaunderSharmaKE< BasicTurbulenceModel >::k().

volScalarField epsilon_
protected

Definition at line 112 of file LaunderSharmaKE.H.

Referenced by LaunderSharmaKE< BasicTurbulenceModel >::epsilon().


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