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

#include <DeardorffDiffStress.H>

Inheritance diagram for DeardorffDiffStress< BasicTurbulenceModel >:

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

Public Member Functions
	TypeName ("DeardorffDiffStress")
	Runtime type information.
	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.
virtual	~DeardorffDiffStress ()=default
	Destructor.
virtual bool	read ()
	Read model coefficients if they have changed.
virtual void	correct ()
	Correct sub-grid stress, eddy-Viscosity and related properties.
Public Member Functions inherited from ReynoldsStress< LESModel< BasicTurbulenceModel > >
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 transportModel &transport, const word &propertiesName)
	Construct from components.
virtual	~ReynoldsStress ()=default
	Destructor.
virtual tmp< volScalarField >	nut () const
	Return the turbulence viscosity.
virtual tmp< volScalarField >	k () const
	Return the turbulence kinetic energy.
virtual tmp< volSymmTensorField >	R () const
	Return the Reynolds stress tensor.
virtual tmp< volSymmTensorField >	devRhoReff () const
	Return the effective stress tensor.
virtual tmp< fvVectorMatrix >	divDevRhoReff (volVectorField &U) const
	Return the source term for the momentum equation.
virtual void	validate ()
	Validate the turbulence fields after construction.

Protected Member Functions
virtual void	correctNut ()
	Update the eddy-viscosity.
Protected Member Functions inherited from ReynoldsStress< LESModel< BasicTurbulenceModel > >
void	boundNormalStress (volSymmTensorField &R) const
void	correctWallShearStress (volSymmTensorField &R) const
void	checkRealizabilityConditions (const volSymmTensorField &R) const

Protected Attributes
dimensionedScalar	Ck_
dimensionedScalar	Cm_
dimensionedScalar	Ce_
dimensionedScalar	Cs_
Protected Attributes inherited from ReynoldsStress< LESModel< BasicTurbulenceModel > >
dimensionedScalar	couplingFactor_
volSymmTensorField	R_
volScalarField	nut_

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 81 of file DeardorffDiffStress.H.

Member Typedef Documentation

◆ alphaField

template<class BasicTurbulenceModel>

typedef BasicTurbulenceModel::alphaField alphaField

Definition at line 120 of file DeardorffDiffStress.H.

◆ rhoField

template<class BasicTurbulenceModel>

typedef BasicTurbulenceModel::rhoField rhoField

Definition at line 121 of file DeardorffDiffStress.H.

◆ transportModel

template<class BasicTurbulenceModel>

typedef BasicTurbulenceModel::transportModel transportModel

Definition at line 122 of file DeardorffDiffStress.H.

Constructor & Destructor Documentation

◆ DeardorffDiffStress()

template<class BasicTurbulenceModel>

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 49 of file DeardorffDiffStress.C.

References alpha, ReynoldsStress< LESModel< BasicTurbulenceModel > >::boundNormalStress(), Ce_, Ck_, Cm_, Cs_, Foam::GlobalIOList< Tuple2< scalar, vector > >::typeName, phi, ReynoldsStress< LESModel< BasicTurbulenceModel > >::R_, ReynoldsStress< LESModel< BasicTurbulenceModel > >::ReynoldsStress(), rho, and U.

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◆ ~DeardorffDiffStress()

template<class BasicTurbulenceModel>

virtual ~DeardorffDiffStress ( )

virtualdefault

Destructor.

Member Function Documentation

◆ correctNut()

template<class BasicTurbulenceModel>

void correctNut ( )

protectedvirtual

Update the eddy-viscosity.

Implements ReynoldsStress< LESModel< BasicTurbulenceModel > >.

Definition at line 36 of file DeardorffDiffStress.C.

References Ck_, optionList::correct(), delta, k, options::New(), ReynoldsStress< LESModel< BasicTurbulenceModel > >::nut_, and Foam::sqrt().

Referenced by correct().

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◆ TypeName()

template<class BasicTurbulenceModel>

TypeName ( "DeardorffDiffStress< BasicTurbulenceModel >" )

Runtime type information.

◆ read()

template<class BasicTurbulenceModel>

bool read ( )

virtual

Read model coefficients if they have changed.

Implements ReynoldsStress< LESModel< BasicTurbulenceModel > >.

Definition at line 121 of file DeardorffDiffStress.C.

References Ce_, Ck_, Cm_, Cs_, read(), and ReynoldsStress< LESModel< BasicTurbulenceModel > >::ReynoldsStress().

Referenced by read().

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◆ correct()

template<class BasicTurbulenceModel>

void correct ( )

virtual

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

Implements ReynoldsStress< LESModel< BasicTurbulenceModel > >.

Definition at line 138 of file DeardorffDiffStress.C.

References alpha, ReynoldsStress< LESModel< BasicTurbulenceModel > >::boundNormalStress(), Ce_, Cm_, correct(), correctNut(), Cs_, D, Foam::fvm::ddt(), delta, Foam::fvm::div(), epsilon, fvOptions, Foam::fvc::grad(), Foam::I, ReynoldsStress< LESModel< BasicTurbulenceModel > >::k(), k, Foam::fvm::laplacian(), options::New(), nu, ReynoldsStress< LESModel< BasicTurbulenceModel > >::R(), ReynoldsStress< LESModel< BasicTurbulenceModel > >::R_, tmp< T >::ref(), ReynoldsStress< LESModel< BasicTurbulenceModel > >::ReynoldsStress(), rho, Foam::fvm::Sp(), Foam::sqrt(), Foam::symm(), Foam::twoSymm(), and U.

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Member Data Documentation

◆ Ck_

template<class BasicTurbulenceModel>

dimensionedScalar Ck_

protected

Definition at line 104 of file DeardorffDiffStress.H.

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

◆ Cm_

template<class BasicTurbulenceModel>

dimensionedScalar Cm_

protected

Definition at line 105 of file DeardorffDiffStress.H.

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

◆ Ce_

template<class BasicTurbulenceModel>

dimensionedScalar Ce_

protected

Definition at line 106 of file DeardorffDiffStress.H.

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

◆ Cs_

template<class BasicTurbulenceModel>

dimensionedScalar Cs_

protected

Definition at line 107 of file DeardorffDiffStress.H.

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

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

Detailed Description

Member Typedef Documentation

◆ alphaField

◆ rhoField

◆ transportModel

Constructor & Destructor Documentation

◆ DeardorffDiffStress()

◆ ~DeardorffDiffStress()

Member Function Documentation

◆ correctNut()

◆ TypeName()

◆ read()

◆ correct()

Member Data Documentation

◆ Ck_

◆ Cm_

◆ Ce_

◆ Cs_