Differential SGS Stress Equation Model for incompressible and compressible flows. More...

Inheritance diagram for DeardorffDiffStress< BasicTurbulenceModel >:

Collaboration diagram for DeardorffDiffStress< BasicTurbulenceModel >:

Public Types
typedef BasicTurbulenceModel::alphaField	alphaField

typedef BasicTurbulenceModel::rhoField	rhoField

typedef BasicTurbulenceModel::transportModel	transportModel

Public Types inherited from ReynoldsStress< LESModel< BasicTurbulenceModel > >
typedef LESModel< BasicTurbulenceModel >::alphaField	alphaField

typedef LESModel< BasicTurbulenceModel >::rhoField	rhoField

typedef LESModel< BasicTurbulenceModel >::transportModel	transportModel

Public Types inherited from LESModel< BasicTurbulenceModel >
typedef BasicTurbulenceModel::alphaField	alphaField

typedef BasicTurbulenceModel::rhoField	rhoField

typedef BasicTurbulenceModel::transportModel	transportModel

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

	DeardorffDiffStress (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)
	Constructor from components. More...

virtual	~DeardorffDiffStress ()
	Destructor. More...

virtual bool	read ()
	Read model coefficients if they have changed. More...

virtual tmp< volScalarField >	epsilon () const
	Return the turbulence kinetic energy dissipation rate. More...

virtual void	correct ()
	Correct sub-grid stress, eddy-Viscosity and related properties. More...

Public Member Functions inherited from ReynoldsStress< LESModel< BasicTurbulenceModel > >
	ReynoldsStress (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	~ReynoldsStress ()
	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< volScalarField >	k () const
	Return the turbulence kinetic energy. More...

virtual tmp< volSymmTensorField >	R () const
	Return the Reynolds stress tensor. More...

virtual tmp< volSymmTensorField >	devRhoReff () const
	Return the effective stress tensor. More...

virtual tmp< fvVectorMatrix >	divDevRhoReff (volVectorField &U) const
	Return the source term for the momentum equation. More...

virtual tmp< fvVectorMatrix >	divDevRhoReff (const volScalarField &rho, volVectorField &U) const
	Return the source term for the momentum equation. More...

virtual void	validate ()
	Validate the turbulence fields after construction. More...

Public Member Functions inherited from LESModel< BasicTurbulenceModel >
	TypeName ("LES")
	Runtime type information. More...

	declareRunTimeSelectionTable (autoPtr, LESModel, 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))

	LESModel (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	~LESModel ()
	Destructor. More...

virtual const dictionary &	coeffDict () const
	Const access to the coefficients dictionary. More...

const dimensionedScalar &	kMin () const
	Return the lower allowable limit for k (default: SMALL) More...

dimensionedScalar &	kMin ()
	Allow kMin to be changed. More...

const volScalarField &	delta () const
	Access function to filter width. More...

virtual tmp< volScalarField >	nuEff () const
	Return the effective viscosity. More...

virtual tmp< scalarField >	nuEff (const label patchi) const
	Return the effective viscosity on patch. More...

Protected Member Functions
virtual void	correctNut ()
	Update the eddy-viscosity. More...

Protected Member Functions inherited from ReynoldsStress< LESModel< BasicTurbulenceModel > >
void	boundNormalStress (volSymmTensorField &R) const

void	correctWallShearStress (volSymmTensorField &R) const

Protected Member Functions inherited from LESModel< BasicTurbulenceModel >
virtual void	printCoeffs (const word &type)
	Print model coefficients. More...

Protected Attributes
dimensionedScalar	Ck_

dimensionedScalar	Cm_

dimensionedScalar	Ce_

dimensionedScalar	Cs_

Protected Attributes inherited from ReynoldsStress< LESModel< BasicTurbulenceModel > >
dimensionedScalar	couplingFactor_

volSymmTensorField	R_

volScalarField	nut_

Protected Attributes inherited from LESModel< BasicTurbulenceModel >
dictionary	LESDict_
	LES 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...

autoPtr< Foam::LESdelta >	delta_
	Run-time selectable delta model. More...

Additional Inherited Members
Static Public Member Functions inherited from LESModel< BasicTurbulenceModel >
static autoPtr< LESModel >	New (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 LES model. More...

Detailed Description

template<class BasicTurbulenceModel>
class Foam::LESModels::DeardorffDiffStress< BasicTurbulenceModel >

Differential SGS Stress Equation Model for incompressible and compressible flows.

Reference:

    Deardorff, J. W. (1973).
    The use of subgrid transport equations in a three-dimensional model
    of atmospheric turbulence.
    Journal of Fluids Engineering, 95(3), 429-438.

This SGS model uses a full balance equation for the SGS stress tensor to simulate the behaviour of B.

This implementation is as described in the above paper except that the triple correlation model of Donaldson is replaced with the generalized gradient diffusion model of Daly and Harlow:

    Daly, B. J., & Harlow, F. H. (1970).
    Transport equations in turbulence.
    Physics of Fluids (1958-1988), 13(11), 2634-2649.

with the default value for the coefficient Cs of 0.25 from

    Launder, B. E., Reece, G. J., & Rodi, W. (1975).
    Progress in the development of a Reynolds-stress turbulence closure.
    Journal of fluid mechanics, 68(03), 537-566.

Source files

Definition at line 82 of file DeardorffDiffStress.H.

Member Typedef Documentation

typedef BasicTurbulenceModel::alphaField alphaField

Definition at line 113 of file DeardorffDiffStress.H.

typedef BasicTurbulenceModel::rhoField rhoField

Definition at line 114 of file DeardorffDiffStress.H.

typedef BasicTurbulenceModel::transportModel transportModel

Definition at line 115 of file DeardorffDiffStress.H.

Constructor & Destructor Documentation

DeardorffDiffStress	(	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`
	)

Constructor from components.

Definition at line 53 of file DeardorffDiffStress.C.

virtual ~DeardorffDiffStress ( )

inlinevirtual

Destructor.

Definition at line 139 of file DeardorffDiffStress.H.

References DeardorffDiffStress< BasicTurbulenceModel >::correct(), DeardorffDiffStress< BasicTurbulenceModel >::epsilon(), and DeardorffDiffStress< BasicTurbulenceModel >::read().

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Member Function Documentation

void correctNut ( )

protectedvirtual

Update the eddy-viscosity.

Implements ReynoldsStress< LESModel< BasicTurbulenceModel > >.

Definition at line 39 of file DeardorffDiffStress.C.

References optionList::correct(), delta, k, options::New(), and Foam::sqrt().

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TypeName ( "DeardorffDiffStress< BasicTurbulenceModel >" )

Runtime type information.

bool read ( )

virtual

Read model coefficients if they have changed.

Implements ReynoldsStress< LESModel< BasicTurbulenceModel > >.

Definition at line 124 of file DeardorffDiffStress.C.

References Foam::read().

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

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tmp< volScalarField > epsilon ( ) const

virtual

Return the turbulence kinetic energy dissipation rate.

Definition at line 143 of file DeardorffDiffStress.C.

References delta, IOobject::groupName(), k, IOobject::NO_READ, IOobject::NO_WRITE, and Foam::sqrt().

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

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void correct ( )

virtual

Correct sub-grid stress, eddy-Viscosity and related properties.

Implements ReynoldsStress< LESModel< BasicTurbulenceModel > >.

Definition at line 166 of file DeardorffDiffStress.C.

References optionList::constrain(), correct, optionList::correct(), Foam::fvm::ddt(), delta, Foam::fvm::div(), epsilon, fvOptions, Foam::fvc::grad(), Foam::I, k, Foam::fvm::laplacian(), options::New(), nu, R, tmp< T >::ref(), Foam::fvm::Sp(), Foam::sqrt(), Foam::symm(), and Foam::twoSymm().

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

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Member Data Documentation

dimensionedScalar Ck_

protected

Definition at line 99 of file DeardorffDiffStress.H.

dimensionedScalar Cm_

protected

Definition at line 100 of file DeardorffDiffStress.H.

dimensionedScalar Ce_

protected

Definition at line 101 of file DeardorffDiffStress.H.

dimensionedScalar Cs_

protected

Definition at line 102 of file DeardorffDiffStress.H.

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

src/TurbulenceModels/turbulenceModels/LES/DeardorffDiffStress/DeardorffDiffStress.H
src/TurbulenceModels/turbulenceModels/LES/DeardorffDiffStress/DeardorffDiffStress.C

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

template<class BasicTurbulenceModel> class Foam::LESModels::DeardorffDiffStress< BasicTurbulenceModel >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<class BasicTurbulenceModel>
class Foam::LESModels::DeardorffDiffStress< BasicTurbulenceModel >