This boundary condition provides a wall constraint on the turbulent kinematic viscosity, i.e. nut, when using wall functions based on a blending of laminar sub-layer and log region contributions. More...

Inheritance diagram for nutUBlendedWallFunctionFvPatchScalarField:

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Collaboration diagram for nutUBlendedWallFunctionFvPatchScalarField:

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

	nutUBlendedWallFunctionFvPatchScalarField (const fvPatch &, const DimensionedField< scalar, volMesh > &)
	Construct from patch and internal field. More...

	nutUBlendedWallFunctionFvPatchScalarField (const fvPatch &, const DimensionedField< scalar, volMesh > &, const dictionary &)
	Construct from patch, internal field and dictionary. More...

	nutUBlendedWallFunctionFvPatchScalarField (const nutUBlendedWallFunctionFvPatchScalarField &, const fvPatch &, const DimensionedField< scalar, volMesh > &, const fvPatchFieldMapper &)

	nutUBlendedWallFunctionFvPatchScalarField (const nutUBlendedWallFunctionFvPatchScalarField &)
	Construct as copy. More...

virtual tmp< fvPatchScalarField >	clone () const
	Construct and return a clone. More...

	nutUBlendedWallFunctionFvPatchScalarField (const nutUBlendedWallFunctionFvPatchScalarField &, const DimensionedField< scalar, volMesh > &)
	Construct as copy setting internal field reference. More...

virtual tmp< fvPatchScalarField >	clone (const DimensionedField< scalar, volMesh > &iF) const
	Construct and return a clone setting internal field reference. More...

virtual tmp< scalarField >	yPlus () const
	Calculate and return the yPlus at the boundary. More...

virtual void	write (Ostream &os) const
	Write. More...

Public Member Functions inherited from nutWallFunctionFvPatchScalarField
	TypeName ("nutWallFunction")
	Runtime type information. More...

	nutWallFunctionFvPatchScalarField (const fvPatch &, const DimensionedField< scalar, volMesh > &)
	Construct from patch and internal field. More...

	nutWallFunctionFvPatchScalarField (const fvPatch &, const DimensionedField< scalar, volMesh > &, const dictionary &)
	Construct from patch, internal field and dictionary. More...

	nutWallFunctionFvPatchScalarField (const nutWallFunctionFvPatchScalarField &, const fvPatch &, const DimensionedField< scalar, volMesh > &, const fvPatchFieldMapper &)

	nutWallFunctionFvPatchScalarField (const nutWallFunctionFvPatchScalarField &)
	Construct as copy. More...

	nutWallFunctionFvPatchScalarField (const nutWallFunctionFvPatchScalarField &, const DimensionedField< scalar, volMesh > &)
	Construct as copy setting internal field reference. More...

scalar	Cmu () const
	Return Cmu. More...

scalar	kappa () const
	Return kappa. More...

scalar	E () const
	Return E. More...

scalar	yPlusLam () const
	Return the y+ at the edge of the viscous sublayer. More...

virtual void	updateCoeffs ()
	Update the coefficients associated with the patch field. More...

Protected Member Functions
virtual tmp< scalarField >	calcNut () const
	Calculate the turbulence viscosity. More...

virtual tmp< scalarField >	calcUTau (const scalarField &magGradU) const
	Calculate the friction velocity. More...

Protected Member Functions inherited from nutWallFunctionFvPatchScalarField
virtual const volVectorField &	U (const turbulenceModel &turb) const

virtual void	checkType ()
	Check the type of the patch. More...

virtual void	writeLocalEntries (Ostream &) const
	Write local wall function variables. More...

Protected Attributes
scalar	n_
	Model coefficient; default = 4. More...

Protected Attributes inherited from nutWallFunctionFvPatchScalarField
word	UName_
	Name of velocity field. More...

scalar	Cmu_
	Cmu coefficient. More...

scalar	kappa_
	Von Karman constant. More...

scalar	E_
	E coefficient. More...

scalar	yPlusLam_
	Estimated y+ value at the edge of the viscous sublayer. More...

Additional Inherited Members
Static Public Member Functions inherited from nutWallFunctionFvPatchScalarField
static const nutWallFunctionFvPatchScalarField &	nutw (const turbulenceModel &turbModel, const label patchi)
	Return the nut patchField for the given wall patch. More...

static scalar	yPlusLam (const scalar kappa, const scalar E)
	Calculate the y+ at the edge of the viscous sublayer. More...

Detailed Description

This boundary condition provides a wall constraint on the turbulent kinematic viscosity, i.e. nut, when using wall functions based on a blending of laminar sub-layer and log region contributions.

\[ u_\tau = (u_{\tau,v}^n + u_{\tau,l}^n)^{1/n} \]

where

\( u_\tau \)	=	friction velocity
\( u_{\tau,v} \)	=	friction velocity in the viscous region
\( u_{\tau,l} \)	=	friction velocity in the log region

Reference: See the section that describes 'automatic wall treatment'

        Menter, F., Ferreira, J. C., Esch, T., Konno, B. (2003).
        The SST Turbulence Model with Improved Wall Treatment
        for Heat Transfer Predictions in Gas Turbines.
        Proceedings of the International Gas Turbine Congress 2003 Tokyo

Usage

Property	Description	Required	Default value
`Cmu`	Model coefficient	no	0.09
`kappa`	Von Karman constant	no	0.41
`E`	Model coefficient	no	9.8

Example of the boundary condition specification:

    <patchName>
    {
        // Mandatory entries
        type            nutUBlendedWallFunction;

        // Optional entries
     }

Note: The full 'automatic wall treatment' description also requires use of the Foam::omegaWallFunction with the blended flag set to 'on'

Suffers from non-exact restart since correctNut() (called through turbulence->validate) returns a slightly different value every time it is called. See nutUSpaldingWallFunctionFvPatchScalarField.C

See also: Foam::nutWallFunctionFvPatchScalarField Foam::omegaWallFunctionFvPatchScalarField

Source files

Definition at line 138 of file nutUBlendedWallFunctionFvPatchScalarField.H.

Constructor & Destructor Documentation

◆ nutUBlendedWallFunctionFvPatchScalarField() [1/5]

nutUBlendedWallFunctionFvPatchScalarField	(	const fvPatch &	p,
		const DimensionedField< scalar, volMesh > &	iF
	)

Construct from patch and internal field.

Definition at line 125 of file nutUBlendedWallFunctionFvPatchScalarField.C.

Referenced by nutUBlendedWallFunctionFvPatchScalarField::clone().

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◆ nutUBlendedWallFunctionFvPatchScalarField() [2/5]

nutUBlendedWallFunctionFvPatchScalarField	(	const fvPatch &	p,
		const DimensionedField< scalar, volMesh > &	iF,
		const dictionary &	dict
	)

Construct from patch, internal field and dictionary.

Definition at line 151 of file nutUBlendedWallFunctionFvPatchScalarField.C.

◆ nutUBlendedWallFunctionFvPatchScalarField() [3/5]

nutUBlendedWallFunctionFvPatchScalarField	(	const nutUBlendedWallFunctionFvPatchScalarField &	ptf,
		const fvPatch &	p,
		const DimensionedField< scalar, volMesh > &	iF,
		const fvPatchFieldMapper &	mapper
	)

Construct by mapping given nutUBlendedWallFunctionFvPatchScalarField onto a new patch

Definition at line 137 of file nutUBlendedWallFunctionFvPatchScalarField.C.

◆ nutUBlendedWallFunctionFvPatchScalarField() [4/5]

nutUBlendedWallFunctionFvPatchScalarField ( const nutUBlendedWallFunctionFvPatchScalarField & wfpsf )

Construct as copy.

Definition at line 164 of file nutUBlendedWallFunctionFvPatchScalarField.C.

◆ nutUBlendedWallFunctionFvPatchScalarField() [5/5]

nutUBlendedWallFunctionFvPatchScalarField	(	const nutUBlendedWallFunctionFvPatchScalarField &	wfpsf,
		const DimensionedField< scalar, volMesh > &	iF
	)

Construct as copy setting internal field reference.

Definition at line 175 of file nutUBlendedWallFunctionFvPatchScalarField.C.

Member Function Documentation

◆ calcNut()

Foam::tmp< Foam::scalarField > calcNut ( ) const

protectedvirtual

Calculate the turbulence viscosity.

Implements nutWallFunctionFvPatchScalarField.

Definition at line 37 of file nutUBlendedWallFunctionFvPatchScalarField.C.

References GeometricField< Type, PatchField, GeoMesh >::boundaryField(), nutUBlendedWallFunctionFvPatchScalarField::calcUTau(), Foam::constant::atomic::group, IOobject::groupName(), Foam::mag(), Foam::max(), turbulenceModel::nu(), Foam::foamVersion::patch, turbulenceModel::propertiesName, Foam::sqr(), and nutWallFunctionFvPatchScalarField::U().

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◆ calcUTau()

Foam::tmp< Foam::scalarField > calcUTau ( const scalarField & magGradU ) const

protectedvirtual

Calculate the friction velocity.

Definition at line 64 of file nutUBlendedWallFunctionFvPatchScalarField.C.

References forAll, Foam::constant::atomic::group, IOobject::groupName(), Foam::log(), Foam::mag(), magUp, n, turbulenceModel::nu(), Foam::foamVersion::patch, fvPatchField< Type >::patchInternalField(), Foam::pow(), turbulenceModel::propertiesName, tmp< T >::ref(), Foam::sqrt(), U, y, turbulenceModel::y(), yPlus, and Foam::Zero.

Referenced by nutUBlendedWallFunctionFvPatchScalarField::calcNut().

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◆ TypeName()

TypeName ( "nutUBlendedWallFunction" )

Runtime type information.

◆ clone() [1/2]

virtual tmp<fvPatchScalarField> clone ( ) const

inlinevirtual

Construct and return a clone.

Definition at line 200 of file nutUBlendedWallFunctionFvPatchScalarField.H.

References nutUBlendedWallFunctionFvPatchScalarField::nutUBlendedWallFunctionFvPatchScalarField().

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◆ clone() [2/2]

virtual tmp<fvPatchScalarField> clone ( const DimensionedField< scalar, volMesh > & iF ) const

inlinevirtual

Construct and return a clone setting internal field reference.

Definition at line 217 of file nutUBlendedWallFunctionFvPatchScalarField.H.

References nutUBlendedWallFunctionFvPatchScalarField::nutUBlendedWallFunctionFvPatchScalarField().

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◆ yPlus()

Foam::tmp< Foam::scalarField > yPlus ( ) const

virtual

Calculate and return the yPlus at the boundary.

Implements nutWallFunctionFvPatchScalarField.

Definition at line 188 of file nutUBlendedWallFunctionFvPatchScalarField.C.

References Foam::constant::atomic::group, IOobject::groupName(), Foam::mag(), turbulenceModel::nu(), Foam::foamVersion::patch, turbulenceModel::propertiesName, fvPatchField< Type >::snGrad(), U, y, and turbulenceModel::y().

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◆ write()

void write ( Ostream & os ) const

virtual

Write.

Reimplemented from nutWallFunctionFvPatchScalarField.

Definition at line 211 of file nutUBlendedWallFunctionFvPatchScalarField.C.

References fvPatchField< Type >::write(), and Ostream::writeEntry().

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Member Data Documentation

◆ n_

scalar n_

protected

Model coefficient; default = 4.

Definition at line 147 of file nutUBlendedWallFunctionFvPatchScalarField.H.

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

src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/nutWallFunctions/nutUBlendedWallFunction/nutUBlendedWallFunctionFvPatchScalarField.H
src/TurbulenceModels/turbulenceModels/derivedFvPatchFields/wallFunctions/nutWallFunctions/nutUBlendedWallFunction/nutUBlendedWallFunctionFvPatchScalarField.C

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ nutUBlendedWallFunctionFvPatchScalarField() [1/5]

◆ nutUBlendedWallFunctionFvPatchScalarField() [2/5]

◆ nutUBlendedWallFunctionFvPatchScalarField() [3/5]

◆ nutUBlendedWallFunctionFvPatchScalarField() [4/5]

◆ nutUBlendedWallFunctionFvPatchScalarField() [5/5]

Member Function Documentation

◆ calcNut()

◆ calcUTau()

◆ TypeName()

◆ clone() [1/2]

◆ clone() [2/2]

◆ yPlus()

◆ write()

Member Data Documentation

◆ n_