This boundary condition provides a wall constraint on 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 turbulence models. More...

Inheritance diagram for nutUBlendedWallFunctionFvPatchScalarField:

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Collaboration diagram for nutUBlendedWallFunctionFvPatchScalarField:

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Public Member Functions
	TypeName ("nutUBlendedWallFunction")

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

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

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

	nutUBlendedWallFunctionFvPatchScalarField (const nutUBlendedWallFunctionFvPatchScalarField &)

virtual tmp< fvPatchScalarField >	clone () const

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

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

virtual tmp< scalarField >	yPlus () const

virtual void	write (Ostream &os) const

Public Member Functions inherited from nutWallFunctionFvPatchScalarField
	TypeName ("nutWallFunction")

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

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

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

	nutWallFunctionFvPatchScalarField (const nutWallFunctionFvPatchScalarField &)

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

scalar	Cmu () const

scalar	kappa () const

scalar	E () const

scalar	yPlusLam () const

scalar	blend (const scalar nutVis, const scalar nutLog, const scalar yPlus) const

virtual void	updateCoeffs ()

Protected Member Functions
virtual tmp< scalarField >	calcNut () const

virtual tmp< scalarField >	calcUTau (const scalarField &magGradU) const

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

virtual void	checkType ()

virtual void	writeLocalEntries (Ostream &) const

Protected Attributes
scalar	n_

Protected Attributes inherited from nutWallFunctionFvPatchScalarField
enum blendingType	blending_

const scalar	n_

word	UName_

scalar	Cmu_

scalar	kappa_

scalar	E_

scalar	yPlusLam_

Additional Inherited Members
Static Public Member Functions inherited from nutWallFunctionFvPatchScalarField
static const nutWallFunctionFvPatchScalarField &	nutw (const turbulenceModel &turbModel, const label patchi)

static scalar	yPlusLam (const scalar kappa, const scalar E)

Protected Types inherited from nutWallFunctionFvPatchScalarField
enum	blendingType { STEPWISE, MAX, BINOMIAL, EXPONENTIAL }

Static Protected Attributes inherited from nutWallFunctionFvPatchScalarField
static const Enum< blendingType >	blendingTypeNames

Detailed Description

This boundary condition provides a wall constraint on 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 turbulence models.

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

where

$u_\tau$	=	Friction velocity
$u_{\tau,v}$	=	Friction velocity in the viscous sublayer
$u_{\tau,l}$	=	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 (unmodifiable)
    type            nutUBlendedWallFunction;

    // Optional entries (unmodifiable)
    n               4.0;

    // Optional (inherited) entries
    ...
 }

where the entries mean:

Property	Description	Type	Req'd	Dflt
`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.

See also

Source files

Definition at line 143 of file nutUBlendedWallFunctionFvPatchScalarField.H.

Constructor & Destructor Documentation

◆ nutUBlendedWallFunctionFvPatchScalarField() [1/5]

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

Definition at line 118 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
	)

Definition at line 144 of file nutUBlendedWallFunctionFvPatchScalarField.C.

◆ nutUBlendedWallFunctionFvPatchScalarField() [3/5]

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

Definition at line 130 of file nutUBlendedWallFunctionFvPatchScalarField.C.

◆ nutUBlendedWallFunctionFvPatchScalarField() [4/5]

nutUBlendedWallFunctionFvPatchScalarField ( const nutUBlendedWallFunctionFvPatchScalarField & wfpsf )

Definition at line 157 of file nutUBlendedWallFunctionFvPatchScalarField.C.

◆ nutUBlendedWallFunctionFvPatchScalarField() [5/5]

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

Definition at line 168 of file nutUBlendedWallFunctionFvPatchScalarField.C.

Member Function Documentation

◆ calcNut()

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

protectedvirtual

Implements nutWallFunctionFvPatchScalarField.

Definition at line 30 of file nutUBlendedWallFunctionFvPatchScalarField.C.

References GeometricField::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

Definition at line 57 of file nutUBlendedWallFunctionFvPatchScalarField.C.

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

Referenced by nutUBlendedWallFunctionFvPatchScalarField::calcNut().

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◆ TypeName()

TypeName ( "nutUBlendedWallFunction" )

◆ clone() [1/2]

virtual tmp<fvPatchScalarField> clone ( ) const

inlinevirtual

Definition at line 205 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

Definition at line 222 of file nutUBlendedWallFunctionFvPatchScalarField.H.

References nutUBlendedWallFunctionFvPatchScalarField::nutUBlendedWallFunctionFvPatchScalarField().

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◆ yPlus()

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

virtual

Implements nutWallFunctionFvPatchScalarField.

Definition at line 181 of file nutUBlendedWallFunctionFvPatchScalarField.C.

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

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◆ write()

void write ( Ostream & os ) const

virtual

Reimplemented from nutWallFunctionFvPatchScalarField.

Definition at line 204 of file nutUBlendedWallFunctionFvPatchScalarField.C.

References os(), fvPatchField::write(), and Ostream::writeEntry().

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Member Data Documentation

◆ n_

scalar n_

protected

Definition at line 152 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_