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

Inheritance diagram for DeardorffDiffStress< BasicMomentumTransportModel >:

Collaboration diagram for DeardorffDiffStress< BasicMomentumTransportModel >:

Public Types
typedef BasicMomentumTransportModel::alphaField	alphaField

typedef BasicMomentumTransportModel::rhoField	rhoField

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

typedef BasicMomentumTransportModel::rhoField	rhoField

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

typedef BasicMomentumTransportModel::rhoField	rhoField

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 viscosity &viscosity, const word &type=typeName)
	Constructor from components. More...

	DeardorffDiffStress (const DeardorffDiffStress &)=delete
	Disallow default bitwise copy construction. 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 tmp< volScalarField >	omega () const
	Return the turbulence specific dissipation rate. More...

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

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

Public Member Functions inherited from ReynoldsStress< LESModel< BasicMomentumTransportModel > >
Foam::tmp< Foam::fvVectorMatrix >	DivDevRhoReff (const RhoFieldType &rho, volVectorField &U) const

	ReynoldsStress (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	~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 >	sigma () const
	Return the Reynolds stress tensor [m^2/s^2]. 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...

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

Public Member Functions inherited from LESModel< BasicMomentumTransportModel >
	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 viscosity &viscosity),(alpha, rho, U, alphaRhoPhi, phi, viscosity))

	LESModel (const word &type, const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity)
	Construct from components. More...

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

virtual	~LESModel ()
	Destructor. More...

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

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

virtual tmp< volScalarField >	nu () const
	Return the laminar viscosity. More...

virtual tmp< scalarField >	nu (const label patchi) const
	Return the laminar viscosity on patchi. 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...

virtual void	predict ()
	Predict the turbulence transport coefficients if possible. More...

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

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

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

void	correctWallShearStress (volSymmTensorField &R) const

virtual tmp< fvSymmTensorMatrix >	RSource () const
	Source term for the R equation. More...

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

Protected Member Functions inherited from LESModel< BasicMomentumTransportModel >
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< BasicMomentumTransportModel > >
dimensionedScalar	couplingFactor_

volSymmTensorField	R_

volScalarField	nut_

Protected Attributes inherited from LESModel< BasicMomentumTransportModel >
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	nutMaxCoeff_
	Upper limit coefficient for nut. More...

autoPtr< laminarModels::generalisedNewtonianViscosityModel >	viscosityModel_
	Run-time selectable generalised Newtonian viscosity model. More...

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

Additional Inherited Members
Static Public Member Functions inherited from LESModel< BasicMomentumTransportModel >
static autoPtr< LESModel >	New (const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity)
	Return a reference to the selected LES model. More...

Detailed Description

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

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 generalised 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 79 of file DeardorffDiffStress.H.

Member Typedef Documentation

◆ alphaField

typedef BasicMomentumTransportModel::alphaField alphaField

Definition at line 103 of file DeardorffDiffStress.H.

◆ rhoField

typedef BasicMomentumTransportModel::rhoField rhoField

Definition at line 104 of file DeardorffDiffStress.H.

Constructor & Destructor Documentation

◆ DeardorffDiffStress() [1/2]

DeardorffDiffStress	(	const alphaField &	alpha,
		const rhoField &	rho,
		const volVectorField &	U,
		const surfaceScalarField &	alphaRhoPhi,
		const surfaceScalarField &	phi,
		const viscosity &	viscosity,
		const word &	type = `typeName`
	)

Constructor from components.

Definition at line 51 of file DeardorffDiffStress.C.

References ReynoldsStress< LESModel< BasicMomentumTransportModel > >::boundNormalStress(), LESModel< BasicMomentumTransportModel >::printCoeffs(), ReynoldsStress< LESModel< BasicMomentumTransportModel > >::R_, and Foam::type().

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◆ DeardorffDiffStress() [2/2]

DeardorffDiffStress ( const DeardorffDiffStress< BasicMomentumTransportModel > & )

delete

Disallow default bitwise copy construction.

◆ ~DeardorffDiffStress()

virtual ~DeardorffDiffStress ( )

inlinevirtual

Destructor.

Definition at line 130 of file DeardorffDiffStress.H.

Member Function Documentation

◆ correctNut()

void correctNut

protectedvirtual

Update the eddy-viscosity.

Implements ReynoldsStress< LESModel< BasicMomentumTransportModel > >.

Definition at line 40 of file DeardorffDiffStress.C.

References delta, k, dictionary::New(), and Foam::sqrt().

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◆ TypeName()

TypeName ( "DeardorffDiffStress< BasicMomentumTransportModel >" )

Runtime type information.

◆ read()

bool read

virtual

Read model coefficients if they have changed.

Implements ReynoldsStress< LESModel< BasicMomentumTransportModel > >.

Definition at line 121 of file DeardorffDiffStress.C.

References Foam::read().

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◆ epsilon()

tmp< volScalarField > epsilon

virtual

Return the turbulence kinetic energy dissipation rate.

Definition at line 141 of file DeardorffDiffStress.C.

References delta, k, GeometricField< Type, PatchField, GeoMesh >::New(), and Foam::sqrt().

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◆ omega()

tmp< volScalarField > omega

virtual

Return the turbulence specific dissipation rate.

Definition at line 155 of file DeardorffDiffStress.C.

References delta, k, GeometricField< Type, PatchField, GeoMesh >::New(), and Foam::sqrt().

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◆ correct()

void correct

virtual

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

Implements ReynoldsStress< LESModel< BasicMomentumTransportModel > >.

Definition at line 168 of file DeardorffDiffStress.C.

References alpha(), fvConstraints::constrain(), Foam::MULES::correct(), D, Foam::fvm::ddt(), delta, Foam::fvm::div(), epsilon, fvConstraints(), fvModels(), Foam::fvc::grad(), Foam::I, k, Foam::fvm::laplacian(), dictionary::New(), Foam::R(), tmp< T >::ref(), rho, fvModels::source(), Foam::fvm::Sp(), Foam::sqrt(), Foam::symm(), Foam::twoSymm(), and U.

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◆ operator=()

void operator= ( const DeardorffDiffStress< BasicMomentumTransportModel > & )

delete

Disallow default bitwise assignment.

Member Data Documentation

◆ Ck_

dimensionedScalar Ck_

protected

Definition at line 89 of file DeardorffDiffStress.H.

◆ Cm_

dimensionedScalar Cm_

protected

Definition at line 90 of file DeardorffDiffStress.H.

◆ Ce_

dimensionedScalar Ce_

protected

Definition at line 91 of file DeardorffDiffStress.H.

◆ Cs_

dimensionedScalar Cs_

protected

Definition at line 92 of file DeardorffDiffStress.H.

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

src/MomentumTransportModels/momentumTransportModels/LES/DeardorffDiffStress/DeardorffDiffStress.H
src/MomentumTransportModels/momentumTransportModels/LES/DeardorffDiffStress/DeardorffDiffStress.C

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

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

Member Typedef Documentation

◆ alphaField

◆ rhoField

Constructor & Destructor Documentation

◆ DeardorffDiffStress() [1/2]

◆ DeardorffDiffStress() [2/2]

◆ ~DeardorffDiffStress()

Member Function Documentation

◆ correctNut()

◆ TypeName()

◆ read()

◆ epsilon()

◆ omega()

◆ correct()

◆ operator=()

Member Data Documentation

◆ Ck_

◆ Cm_

◆ Ce_

◆ Cs_

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