buoyantKEpsilon< BasicTurbulenceModel > Class Template Reference

Additional buoyancy generation/dissipation term applied to the k and epsilon equations of the standard k-epsilon model. More...

#include <buoyantKEpsilon.H>

Inheritance diagram for buoyantKEpsilon< BasicTurbulenceModel >:

Collaboration diagram for buoyantKEpsilon< BasicTurbulenceModel >:

Public Types
typedef BasicTurbulenceModel::alphaField	alphaField
typedef BasicTurbulenceModel::rhoField	rhoField
typedef BasicTurbulenceModel::transportModel	transportModel
Public Types inherited from kEpsilon< BasicTurbulenceModel >
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 ("buoyantKEpsilon")
	Runtime type information.
	buoyantKEpsilon (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	~buoyantKEpsilon ()=default
	Destructor.
virtual bool	read ()
	Re-read model coefficients if they have changed.
Public Member Functions inherited from kEpsilon< BasicTurbulenceModel >
	TypeName ("kEpsilon")
	Runtime type information.
	kEpsilon (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	~kEpsilon ()=default
	Destructor.
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 >	Gcoef () const
virtual tmp< fvScalarMatrix >	kSource () const
virtual tmp< fvScalarMatrix >	epsilonSource () const
Protected Member Functions inherited from kEpsilon< BasicTurbulenceModel >
virtual void	correctNut ()

Protected Attributes
dimensionedScalar	Cg_
Protected Attributes inherited from kEpsilon< BasicTurbulenceModel >
dimensionedScalar	Cmu_
dimensionedScalar	C1_
dimensionedScalar	C2_
dimensionedScalar	C3_
dimensionedScalar	sigmak_
dimensionedScalar	sigmaEps_
volScalarField	k_
volScalarField	epsilon_
bool	twoLayerTreatment_
dimensionedScalar	ReyStar_
dimensionedScalar	ReyFactor_
std::unique_ptr< volScalarField::Internal >	lEpsPtr_
std::unique_ptr< volScalarField >	lambdaEpsPtr_
Protected Attributes inherited from eddyViscosity< RASModel< BasicTurbulenceModel > >
volScalarField	nut_

Detailed Description

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

Additional buoyancy generation/dissipation term applied to the k and epsilon equations of the standard k-epsilon model.

Reference:

    Henkes, R.A.W.M., Van Der Vlugt, F.F. & Hoogendoorn, C.J. (1991).
    Natural Convection Flow in a Square Cavity Calculated with
    Low-Reynolds-Number Turbulence Models.
    Int. J. Heat Mass Transfer, 34, 1543-1557.

This implementation is based on the density rather than temperature gradient extending the applicability to systems in which the density gradient may be generated by variation of composition rather than temperature. Further, the 1/Prt coefficient is replaced by Cg to provide more general control of model.

The default model coefficients are

    buoyantKEpsilonCoeffs
    {
        Cg              1.0;
    }

See also

Foam::RASModels::kEpsilon

Source files

• buoyantKEpsilon.H
• buoyantKEpsilon.C

Definition at line 79 of file buoyantKEpsilon.H.

Member Typedef Documentation

alphaField

template<class BasicTurbulenceModel>

typedef BasicTurbulenceModel::alphaField alphaField

Definition at line 114 of file buoyantKEpsilon.H.

rhoField

template<class BasicTurbulenceModel>

typedef BasicTurbulenceModel::rhoField rhoField

Definition at line 115 of file buoyantKEpsilon.H.

transportModel

template<class BasicTurbulenceModel>

typedef BasicTurbulenceModel::transportModel transportModel

Definition at line 116 of file buoyantKEpsilon.H.

Constructor & Destructor Documentation

buoyantKEpsilon()

template<class BasicTurbulenceModel>

buoyantKEpsilon	(	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 37 of file buoyantKEpsilon.C.

References alpha, Cg_, Foam::GlobalIOList< Tuple2< scalar, vector > >::typeName, phi, rho, and U.

~buoyantKEpsilon()

template<class BasicTurbulenceModel>

virtual ~buoyantKEpsilon ( )

virtualdefault

Destructor.

Member Function Documentation

Gcoef()

template<class BasicTurbulenceModel>

tmp< volScalarField > Gcoef ( ) const

protected

Definition at line 96 of file buoyantKEpsilon.C.

References Cg_, kEpsilon< BasicTurbulenceModel >::Cmu_, kEpsilon< BasicTurbulenceModel >::epsilon_, g, Foam::fvc::grad(), kEpsilon< BasicTurbulenceModel >::k_, and gravity::New().

Referenced by epsilonSource(), and kSource().

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kSource()

template<class BasicTurbulenceModel>

tmp< fvScalarMatrix > kSource ( ) const

protectedvirtual

Reimplemented from kEpsilon< BasicTurbulenceModel >.

Definition at line 109 of file buoyantKEpsilon.C.

References g, Gcoef(), kEpsilon< BasicTurbulenceModel >::k_, kEpsilon< BasicTurbulenceModel >::kSource(), Foam::mag(), gravity::New(), and Foam::fvm::SuSp().

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epsilonSource()

template<class BasicTurbulenceModel>

tmp< fvScalarMatrix > epsilonSource ( ) const

protectedvirtual

Reimplemented from kEpsilon< BasicTurbulenceModel >.

Definition at line 125 of file buoyantKEpsilon.C.

References kEpsilon< BasicTurbulenceModel >::C1_, Foam::dimVelocity, kEpsilon< BasicTurbulenceModel >::epsilon_, kEpsilon< BasicTurbulenceModel >::epsilonSource(), g, Gcoef(), Foam::mag(), gravity::New(), Foam::fvm::SuSp(), and Foam::tanh().

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TypeName()

template<class BasicTurbulenceModel>

TypeName

(

"buoyantKEpsilon< BasicTurbulenceModel >"

)

Runtime type information.

read()

template<class BasicTurbulenceModel>

bool read ( )

virtual

Re-read model coefficients if they have changed.

Reimplemented from kEpsilon< BasicTurbulenceModel >.

Definition at line 81 of file buoyantKEpsilon.C.

References Cg_, and kEpsilon< BasicTurbulenceModel >::read().

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Member Data Documentation

Cg_

template<class BasicTurbulenceModel>

dimensionedScalar Cg_

protected

Definition at line 102 of file buoyantKEpsilon.H.

Referenced by buoyantKEpsilon(), Gcoef(), and read().

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

• src/TurbulenceModels/compressible/RAS/buoyantKEpsilon/buoyantKEpsilon.H
• src/TurbulenceModels/compressible/RAS/buoyantKEpsilon/buoyantKEpsilon.C