This boundary condition provides a wall function for the turbulent viscosity (i.e. nut) based on velocity (i.e. U) using a binomial-function wall-function blending method between the viscous and inertial sublayer predictions of nut for low- and high-Reynolds number applications. 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 &)
	Construct by mapping given nutUBlendedWallFunctionFvPatchScalarField onto a new patch. More...

	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 &)
	Construct by mapping given nutWallFunctionFvPatchScalarField onto a new patch. More...

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

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

const wallFunctionCoefficients &	wallCoeffs () const noexcept
	Return wallFunctionCoefficients. More...

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

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

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

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

Protected Member Functions inherited from nutWallFunctionFvPatchScalarField
virtual const volVectorField &	U (const turbulenceModel &turb) const
	Helper to return the velocity field either from the turbulence model (default) or the mesh database. More...

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

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...

wallFunctionCoefficients	wallCoeffs_
	Wall-function coefficients. 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...

Detailed Description

This boundary condition provides a wall function for the turbulent viscosity (i.e. nut) based on velocity (i.e. U) using a binomial-function wall-function blending method between the viscous and inertial sublayer predictions of nut for low- and high-Reynolds number applications.

$u_\tau = (u_{\tau,vis}^n + u_{\tau,log}^n)^{1/n}$

where

$u_\tau$	=	Friction velocity
$u_{\tau,vis}$	=	Friction velocity in the viscous sublayer
$u_{\tau,log}$	=	Friction velocity in the inertial sublayer

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.
            In Proceedings of the International Gas Turbine Congress.
            November, 2003. Tokyo, Japan. pp. 2-7.

Usage

Example of the boundary condition specification:

<patchName>
{
    // Mandatory entries
    type            nutUBlendedWallFunction;

    // Optional entries
    n               4.0;

    // Inherited entries
    ...
 }

where the entries mean:

Property	Description	Type	Reqd	Deflt
`type`	Type name: nutUBlendedWallFunction	word	yes	-
`n`	Blending factor	scalar	no	4.0

The inherited entries are elaborated in:

nutWallFunctionFvPatchScalarField.H

Note

The full 'automatic wall treatment' description also requires use of the omegaWallFunctionFvPatchScalarField.H with the blending option binomial or with the deprecated 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.

Source files

Definition at line 139 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 133 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 159 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 145 of file nutUBlendedWallFunctionFvPatchScalarField.C.

◆ nutUBlendedWallFunctionFvPatchScalarField() [4/5]

nutUBlendedWallFunctionFvPatchScalarField ( const nutUBlendedWallFunctionFvPatchScalarField & wfpsf )

Construct as copy.

Definition at line 172 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 183 of file nutUBlendedWallFunctionFvPatchScalarField.C.

Member Function Documentation

◆ calcNut()

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

protectedvirtual

Calculate the turbulent viscosity.

Implements nutWallFunctionFvPatchScalarField.

Definition at line 30 of file nutUBlendedWallFunctionFvPatchScalarField.C.

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

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◆ calcUTau()

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

protected

Calculate the friction velocity.

Definition at line 59 of file nutUBlendedWallFunctionFvPatchScalarField.C.

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

Referenced by nutUBlendedWallFunctionFvPatchScalarField::calcNut().

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◆ writeLocalEntries()

void writeLocalEntries ( Ostream & os ) const

protected

Write local wall function variables.

Definition at line 121 of file nutUBlendedWallFunctionFvPatchScalarField.C.

References os(), and Ostream::writeEntryIfDifferent().

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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 224 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 245 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 196 of file nutUBlendedWallFunctionFvPatchScalarField.C.

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

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◆ write()

void write ( Ostream & os ) const

virtual

Write.

Reimplemented from nutWallFunctionFvPatchScalarField.

Definition at line 222 of file nutUBlendedWallFunctionFvPatchScalarField.C.

References os(), nutWallFunctionFvPatchScalarField::write(), and fvPatchField< Type >::writeValueEntry().

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Member Data Documentation

◆ n_

scalar n_

protected

Model coefficient; default = 4.

Definition at line 150 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()

◆ writeLocalEntries()

◆ TypeName()

◆ clone() [1/2]

◆ clone() [2/2]

◆ yPlus()

◆ write()

Member Data Documentation

◆ n_