This boundary condition applies a heat flux condition to temperature on an external wall. Heat flux can be specified in the following ways: More...

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

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

	externalTemperatureFvPatchScalarField (const externalTemperatureFvPatchScalarField &, const fvPatch &, const DimensionedField< scalar, volMesh > &, const fieldMapper &)
	Construct by mapping given. More...

	externalTemperatureFvPatchScalarField (const externalTemperatureFvPatchScalarField &)=delete
	Disallow copy without setting internal field reference. More...

	externalTemperatureFvPatchScalarField (const externalTemperatureFvPatchScalarField &, const DimensionedField< scalar, volMesh > &)
	Copy constructor 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 bool	fixesValue () const
	Disallow manipulation of the boundary values. More...

virtual void	map (const fvPatchScalarField &, const fieldMapper &)
	Map the given fvPatchField onto this fvPatchField. More...

virtual void	reset (const fvPatchScalarField &)
	Reset the fvPatchField to the given fvPatchField. More...

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

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

Protected Member Functions
virtual void	getKappa (scalarField &kappa, scalarField &sumKappaTByDelta, scalarField &sumKappaByDelta, scalarField &Tref, scalarField &Tw, scalarField &sumq, scalarField &qByKappa) const
	Get the patch kappa, kappa*Tc/delta, kappa/delta,. More...

Detailed Description

This boundary condition applies a heat flux condition to temperature on an external wall. Heat flux can be specified in the following ways:

Fixed power: requires Q
Fixed heat flux: requires q
Fixed heat transfer coefficient: requires h and Ta

where:

	=	Power Function1 of time [W]
	=	Heat flux Function1 of time [W/m^2]
	=	Heat transfer coefficient Function1 of time [W/m^2/K]
	=	Ambient temperature Function1 of time [K]

Only one of Q or q may be specified, if h and Ta are also specified the corresponding heat-flux is added.

If the heat transfer coefficient h is specified an optional thin thermal layer resistances can also be specified through thicknessLayers and kappaLayers entries.

The patch thermal conductivity kappa is obtained from the region thermophysicalTransportModel so that this boundary condition can be applied directly to either fluid or solid regions.

Usage

Property	Description	Required	Default value
`Q`	Power [W]	no
`q`	Heat flux [W/m^2]	no
`h`	Heat transfer coefficient [W/m^2/K]	no
`Ta`	Ambient temperature [K]	if h is given
`thicknessLayers`	Layer thicknesses [m]	no
`kappaLayers`	Layer thermal conductivities [W/m/K]	no
`relaxation`	Relaxation for the wall temperature	no	1
`emissivity`	Surface emissivity for radiative flux to ambient	no	0
`qr`	Name of the radiative field	no	none
`qrRelaxation`	Relaxation factor for radiative field	no	1

Example of the boundary condition specification:

    <patchName>
    {
        type            externalTemperature;

        Ta              constant 300.0;
        h               uniform 10.0;
        thicknessLayers (0.1 0.2 0.3 0.4);
        kappaLayers     (1 2 3 4);

        value           $internalField;
    }

See also: Foam::mixedFvPatchScalarField Foam::Function1

Source files

Definition at line 178 of file externalTemperatureFvPatchScalarField.H.

Constructor & Destructor Documentation

◆ externalTemperatureFvPatchScalarField() [1/4]

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

Construct from patch, internal field and dictionary.

Definition at line 68 of file externalTemperatureFvPatchScalarField.C.

References dict, DimensionedField< Type, GeoMesh >::dimensions(), Foam::dimLength, Foam::exit(), Foam::FatalIOError, FatalIOErrorInFunction, fvPatchField< Type >::operator, p, List< T >::size(), and Foam::unitFraction.

Referenced by externalTemperatureFvPatchScalarField::clone().

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◆ externalTemperatureFvPatchScalarField() [2/4]

externalTemperatureFvPatchScalarField	(	const externalTemperatureFvPatchScalarField &	ptf,
		const fvPatch &	p,
		const DimensionedField< scalar, volMesh > &	iF,
		const fieldMapper &	mapper
	)

Construct by mapping given.

externalTemperatureFvPatchScalarField onto a new patch

Definition at line 199 of file externalTemperatureFvPatchScalarField.C.

◆ externalTemperatureFvPatchScalarField() [3/4]

externalTemperatureFvPatchScalarField ( const externalTemperatureFvPatchScalarField & )

delete

Disallow copy without setting internal field reference.

◆ externalTemperatureFvPatchScalarField() [4/4]

externalTemperatureFvPatchScalarField	(	const externalTemperatureFvPatchScalarField &	tppsf,
		const DimensionedField< scalar, volMesh > &	iF
	)

Copy constructor setting internal field reference.

Definition at line 231 of file externalTemperatureFvPatchScalarField.C.

Member Function Documentation

◆ getKappa()

void getKappa	(	scalarField &	kappa,
		scalarField &	sumKappaTByDelta,
		scalarField &	sumKappaByDelta,
		scalarField &	Tref,
		scalarField &	Tw,
		scalarField &	sumq,
		scalarField &	qByKappa
	)		const

protectedvirtual

Get the patch kappa, kappa*Tc/delta, kappa/delta,.

reference T, current wall T and also the heat-flux/delta obtained from the sum heat-flux provided

Reimplemented in multiphaseExternalTemperatureFvPatchScalarField.

Definition at line 36 of file externalTemperatureFvPatchScalarField.C.

References Foam::constant::electromagnetic::kappa, thermophysicalTransportModel::kappaEff(), thermophysicalTransportModel::qCorr(), and tmp< T >::valid().

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◆ TypeName()

TypeName ( "externalTemperature" )

Runtime type information.

◆ clone()

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

inlinevirtual

Construct and return a clone setting internal field reference.

Reimplemented in multiphaseExternalTemperatureFvPatchScalarField.

Definition at line 299 of file externalTemperatureFvPatchScalarField.H.

References externalTemperatureFvPatchScalarField::externalTemperatureFvPatchScalarField().

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◆ fixesValue()

virtual bool fixesValue ( ) const

inlinevirtual

Disallow manipulation of the boundary values.

The boundary temperature is evaluated only by this boundary condition

Definition at line 318 of file externalTemperatureFvPatchScalarField.H.

◆ map()

void map	(	const fvPatchScalarField &	ptf,
		const fieldMapper &	mapper
	)

virtual

Map the given fvPatchField onto this fvPatchField.

Definition at line 258 of file externalTemperatureFvPatchScalarField.C.

References word::null.

◆ reset()

void reset ( const fvPatchScalarField & ptf )

virtual

Reset the fvPatchField to the given fvPatchField.

Used for mesh to mesh mapping

Definition at line 276 of file externalTemperatureFvPatchScalarField.C.

References word::null.

◆ updateCoeffs()

void updateCoeffs ( )

virtual

Update the coefficients associated with the patch field.

Definition at line 293 of file externalTemperatureFvPatchScalarField.C.

References Foam::endl(), f(), forAll, Foam::gAverage(), Foam::gMax(), Foam::gMin(), Foam::gSum(), Foam::constant::universal::h, Foam::Info, Foam::constant::electromagnetic::kappa, word::null, Foam::pow3(), Foam::constant::physicoChemical::sigma, Foam::fvc::snGrad(), and dimensioned< Type >::value().

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◆ write()

void write ( Ostream & os ) const

Write.

Definition at line 418 of file externalTemperatureFvPatchScalarField.C.

References Foam::dimArea, Foam::dimPower, Foam::dimTemperature, word::null, fvPatchField< Type >::write(), Foam::writeEntry(), and Foam::writeEntryIfDifferent().

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

src/ThermophysicalTransportModels/coupledThermophysicalTransportModels/externalTemperature/externalTemperatureFvPatchScalarField.H
src/ThermophysicalTransportModels/coupledThermophysicalTransportModels/externalTemperature/externalTemperatureFvPatchScalarField.C

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ externalTemperatureFvPatchScalarField() [1/4]

◆ externalTemperatureFvPatchScalarField() [2/4]

◆ externalTemperatureFvPatchScalarField() [3/4]

◆ externalTemperatureFvPatchScalarField() [4/4]

Member Function Documentation

◆ getKappa()

◆ TypeName()

◆ clone()

◆ fixesValue()

◆ map()

◆ reset()

◆ updateCoeffs()

◆ write()