Velocity outlet boundary condition which corrects the extrapolated velocity to match the specified flow rate. More...

Inheritance diagram for flowRateOutletVelocityFvPatchVectorField:

Collaboration diagram for flowRateOutletVelocityFvPatchVectorField:

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

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

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

	flowRateOutletVelocityFvPatchVectorField (const this_bctype &, const fvPatch &, const DimensionedField< vector, volMesh > &, const fvPatchFieldMapper &)
	Construct by mapping onto a new patch. More...

	flowRateOutletVelocityFvPatchVectorField (const this_bctype &, const DimensionedField< vector, volMesh > &)
	Construct as copy setting internal field reference. More...

	flowRateOutletVelocityFvPatchVectorField (const this_bctype &)=delete
	No copy without an internal field. More...

virtual tmp< fvPatchField< vector > >	clone (const DimensionedField< vector, volMesh > &iF) const
	Clone with an internal field reference. More...

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

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

Detailed Description

Velocity outlet boundary condition which corrects the extrapolated velocity to match the specified flow rate.

For a mass-based flux:

the flow rate should be provided in kg/s
if rho is "none" the flow rate is in m^3/s
otherwise rho should correspond to the name of the density field
if the density field cannot be found in the database, the user must specify the outlet density using the rhoOutlet entry

For a volumetric-based flux:

the flow rate is in m^3/s

Usage

Property	Description	Required	Default value
`massFlowRate`	mass flow rate [kg/s]	no
`volumetricFlowRate`	volumetric flow rate [m^3/s]	no
`rho`	density field name	no	rho
`rhoOutlet`	outlet density	no

Example of the boundary condition specification for a volumetric flow rate:

    <patchName>
    {
        type                flowRateOutletVelocity;
        volumetricFlowRate  0.2;
        value               uniform (0 0 0);
    }

Example of the boundary condition specification for a mass flow rate:

    <patchName>
    {
        type                flowRateOutletVelocity;
        massFlowRate        0.2;
        rhoOutlet           1.0;
        value               uniform (0 0 0);
    }

The flowRate entry is a Function1 of time, see Foam::Function1Types.

Note

rhoOutlet is required for the case of a mass flow rate, where the density field is not available at start-up
The value is positive out of the domain (as an outlet)
May not work correctly for transonic outlets
Strange behaviour with potentialFoam since the U equation is not solved

See also: Foam::fixedValueFvPatchField Foam::Function1Types Foam::flowRateInletVelocityFvPatchVectorField

Source files

Definition at line 130 of file flowRateOutletVelocityFvPatchVectorField.H.

Constructor & Destructor Documentation

◆ flowRateOutletVelocityFvPatchVectorField() [1/5]

flowRateOutletVelocityFvPatchVectorField	(	const fvPatch &	,
		const DimensionedField< vector, volMesh > &
	)

Construct from patch and internal field.

◆ flowRateOutletVelocityFvPatchVectorField() [2/5]

flowRateOutletVelocityFvPatchVectorField	(	const fvPatch &	,
		const DimensionedField< vector, volMesh > &	,
		const dictionary &
	)

Construct from patch, internal field and dictionary.

◆ flowRateOutletVelocityFvPatchVectorField() [3/5]

flowRateOutletVelocityFvPatchVectorField	(	const this_bctype &	,
		const fvPatch &	,
		const DimensionedField< vector, volMesh > &	,
		const fvPatchFieldMapper &
	)

Construct by mapping onto a new patch.

◆ flowRateOutletVelocityFvPatchVectorField() [4/5]

flowRateOutletVelocityFvPatchVectorField	(	const this_bctype &	,
		const DimensionedField< vector, volMesh > &
	)

Construct as copy setting internal field reference.

◆ flowRateOutletVelocityFvPatchVectorField() [5/5]

flowRateOutletVelocityFvPatchVectorField ( const this_bctype & )

delete

No copy without an internal field.

Member Function Documentation

◆ TypeName()

TypeName ( "flowRateOutletVelocity" )

Runtime type information.

◆ clone()

virtual tmp<fvPatchField<vector> > clone ( const DimensionedField< vector, volMesh > & iF ) const

inlinevirtual

Clone with an internal field reference.

Definition at line 227 of file flowRateOutletVelocityFvPatchVectorField.H.

References fvPatchField< Type >::Clone().

Here is the call graph for this function:

◆ updateCoeffs()

virtual void updateCoeffs ( )

virtual

Update the coefficients associated with the patch field.

◆ write()

virtual void write ( Ostream & ) const