This boundary condition is applied to the flow velocity, to simulate the opening or closure of a baffle due to local pressure or force changes, by merging the behaviours of wall and cyclic conditions. More...

Inheritance diagram for activePressureForceBaffleVelocityFvPatchVectorField:

[legend]

Collaboration diagram for activePressureForceBaffleVelocityFvPatchVectorField:

[legend]

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

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

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

	activePressureForceBaffleVelocityFvPatchVectorField (const activePressureForceBaffleVelocityFvPatchVectorField &, const fvPatch &, const DimensionedField< vector, volMesh > &, const fvPatchFieldMapper &)
	Construct by mapping. More...

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

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

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

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

virtual void	autoMap (const fvPatchFieldMapper &)
	Map (and resize as needed) from self given a mapping object. More...

virtual void	rmap (const fvPatchVectorField &, const labelList &)
	Reverse map the given fvPatchField onto this fvPatchField. More...

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

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

Private Attributes
word	pName_
	Name of the pressure field used to calculate the force. More...

word	cyclicPatchName_
	Name of the cyclic patch used when the active baffle is open. More...

label	cyclicPatchLabel_
	Index of the cyclic patch used when the active baffle is open. More...

label	orientation_
	Orientation (1 or -1) of the active baffle mode. More...

vectorField	initWallSf_
	Initial wall patch areas. More...

vectorField	initCyclicSf_
	Initial cyclic patch areas. More...

vectorField	nbrCyclicSf_
	Initial neighbour-side cyclic patch areas. More...

scalar	openFraction_
	Current fraction of the active baffle which is open. More...

scalar	openingTime_
	Time taken for the active baffle to open. More...

scalar	maxOpenFractionDelta_
	Maximum fractional change to the active baffle openness. More...

label	curTimeIndex_

scalar	minThresholdValue_
	Minimum value for the active baffle to start opening. More...

bool	fBased_
	Force based active baffle. More...

bool	baffleActivated_
	Baffle is activated. More...

Detailed Description

This boundary condition is applied to the flow velocity, to simulate the opening or closure of a baffle due to local pressure or force changes, by merging the behaviours of wall and cyclic conditions.

The baffle joins two mesh regions, where the open fraction determines the interpolation weights applied to each cyclic- and neighbour-patch contribution. This means that this is boundary condition is meant to be used in an extra wall beyond an existing cyclic patch pair. See PDRMesh for more details.

Once the threshold is crossed, this condition activated and continues to open or close at a fixed rate using

$x = x_{old} + s \times \frac{dt}{DT}$

where

	=	baffle open fraction [0-1]
$x_{old}$	=	baffle open fraction on previous evaluation
	=	sign for orientation: 1 to open or -1 to close
	=	simulation time step
	=	time taken to open the baffle

The open fraction is then applied to scale the patch areas.

Patch usage

Property	Description	Required	Default value
`p`	pressure field name	no	p
`cyclicPatch`	cyclic patch name	yes
`orientation`	1 to open or -1 to close	yes
`openFraction`	current open fraction [0-1]	yes
`openingTime`	time taken to open or close the baffle	yes
`maxOpenFractionDelta`	max fraction change per timestep	yes
`minThresholdValue`	minimum absolute pressure or
`force` difference for activation	yes
`forceBased`	force (true) or pressure-based (false) activation	yes

Example of the boundary condition specification:

    myPatch
    {
        type            activePressureForceBaffleVelocity;
        p               p;
        cyclicPatch     cyclic1;
        orientation     1;
        openFraction    0.2;
        openingTime     5.0;
        maxOpenFractionDelta 0.1;
        minThresholdValue 0.01;
        forceBased      false;
    }

Source files

Definition at line 177 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Constructor & Destructor Documentation

◆ activePressureForceBaffleVelocityFvPatchVectorField() [1/5]

activePressureForceBaffleVelocityFvPatchVectorField	(	const fvPatch &	p,
		const DimensionedField< vector, volMesh > &	iF
	)

Construct from patch and internal field.

Definition at line 36 of file activePressureForceBaffleVelocityFvPatchVectorField.C.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::clone().

Here is the caller graph for this function:

◆ activePressureForceBaffleVelocityFvPatchVectorField() [2/5]

activePressureForceBaffleVelocityFvPatchVectorField	(	const fvPatch &	p,
		const DimensionedField< vector, volMesh > &	iF,
		const dictionary &	dict
	)

Construct from patch, internal field and dictionary.

Definition at line 88 of file activePressureForceBaffleVelocityFvPatchVectorField.C.

References dict, and p.

◆ activePressureForceBaffleVelocityFvPatchVectorField() [3/5]

activePressureForceBaffleVelocityFvPatchVectorField	(	const activePressureForceBaffleVelocityFvPatchVectorField &	ptf,
		const fvPatch &	p,
		const DimensionedField< vector, volMesh > &	iF,
		const fvPatchFieldMapper &	mapper
	)

Construct by mapping.

Definition at line 61 of file activePressureForceBaffleVelocityFvPatchVectorField.C.

◆ activePressureForceBaffleVelocityFvPatchVectorField() [4/5]

activePressureForceBaffleVelocityFvPatchVectorField ( const activePressureForceBaffleVelocityFvPatchVectorField & ptf )

Construct as copy.

Definition at line 131 of file activePressureForceBaffleVelocityFvPatchVectorField.C.

◆ activePressureForceBaffleVelocityFvPatchVectorField() [5/5]

activePressureForceBaffleVelocityFvPatchVectorField	(	const activePressureForceBaffleVelocityFvPatchVectorField &	ptf,
		const DimensionedField< vector, volMesh > &	iF
	)

Construct as copy setting internal field reference.

Definition at line 155 of file activePressureForceBaffleVelocityFvPatchVectorField.C.

Member Function Documentation

◆ TypeName()

TypeName ( "activePressureForceBaffleVelocity" )

Runtime type information.

◆ clone() [1/2]

virtual tmp<fvPatchVectorField> clone ( ) const

inlinevirtual

Construct and return a clone.

Definition at line 267 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

References activePressureForceBaffleVelocityFvPatchVectorField::activePressureForceBaffleVelocityFvPatchVectorField().

Here is the call graph for this function:

◆ clone() [2/2]

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

inlinevirtual

Construct and return a clone setting internal field reference.

Definition at line 284 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

◆ autoMap()

void autoMap ( const fvPatchFieldMapper & m )

virtual

Map (and resize as needed) from self given a mapping object.

Note: cannot map field from cyclic patch anyway so just recalculate

Areas should be consistent when doing autoMap except in case of topo changes. ! Note: we don't want to use Sf here since triggers rebuilding of /*! fvMesh::S() which will give problems when mapped (since already on new mesh)

Definition at line 181 of file activePressureForceBaffleVelocityFvPatchVectorField.C.

References Foam::endl(), forAll, Foam::Info, Foam::mag(), and mesh.

Here is the call graph for this function:

◆ rmap()

void rmap	(	const fvPatchVectorField &	ptf,
		const labelList &	addr
	)

virtual

Reverse map the given fvPatchField onto this fvPatchField.

Definition at line 219 of file activePressureForceBaffleVelocityFvPatchVectorField.C.

◆ updateCoeffs()

void updateCoeffs ( )

virtual

Update the coefficients associated with the patch field.

Definition at line 243 of file activePressureForceBaffleVelocityFvPatchVectorField.C.

Here is the call graph for this function:

◆ write()

void write ( Ostream & os ) const

virtual

Write.

Definition at line 354 of file activePressureForceBaffleVelocityFvPatchVectorField.C.

References token::END_STATEMENT, Foam::nl, fvPatchField::write(), and Ostream::writeKeyword().

Here is the call graph for this function:

Field Documentation

◆ pName_

word pName_

private

Name of the pressure field used to calculate the force.

on the active baffle

Definition at line 185 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ cyclicPatchName_

word cyclicPatchName_

private

Name of the cyclic patch used when the active baffle is open.

Definition at line 188 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

◆ cyclicPatchLabel_

label cyclicPatchLabel_

private

Index of the cyclic patch used when the active baffle is open.

Definition at line 191 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ orientation_

label orientation_

private

Orientation (1 or -1) of the active baffle mode.

Used to change the direction of opening or closing the baffle

Definition at line 195 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ initWallSf_

vectorField initWallSf_

private

Initial wall patch areas.

Definition at line 198 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ initCyclicSf_

vectorField initCyclicSf_

private

Initial cyclic patch areas.

Definition at line 201 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ nbrCyclicSf_

vectorField nbrCyclicSf_

private

Initial neighbour-side cyclic patch areas.

Definition at line 204 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ openFraction_

scalar openFraction_

private

Current fraction of the active baffle which is open.

Definition at line 207 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ openingTime_

scalar openingTime_

private

Time taken for the active baffle to open.

Definition at line 210 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ maxOpenFractionDelta_

scalar maxOpenFractionDelta_

private

Maximum fractional change to the active baffle openness.

per time-step

Definition at line 214 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ curTimeIndex_

label curTimeIndex_

private

Definition at line 216 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ minThresholdValue_

scalar minThresholdValue_

private

Minimum value for the active baffle to start opening.

Definition at line 219 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ fBased_

bool fBased_

private

Force based active baffle.

Definition at line 222 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

◆ baffleActivated_

bool baffleActivated_

private

Baffle is activated.

Definition at line 225 of file activePressureForceBaffleVelocityFvPatchVectorField.H.

Referenced by activePressureForceBaffleVelocityFvPatchVectorField::updateCoeffs().

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

src/finiteVolume/fields/fvPatchFields/derived/activePressureForceBaffleVelocity/activePressureForceBaffleVelocityFvPatchVectorField.H
src/finiteVolume/fields/fvPatchFields/derived/activePressureForceBaffleVelocity/activePressureForceBaffleVelocityFvPatchVectorField.C

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ activePressureForceBaffleVelocityFvPatchVectorField() [1/5]

◆ activePressureForceBaffleVelocityFvPatchVectorField() [2/5]

◆ activePressureForceBaffleVelocityFvPatchVectorField() [3/5]

◆ activePressureForceBaffleVelocityFvPatchVectorField() [4/5]

◆ activePressureForceBaffleVelocityFvPatchVectorField() [5/5]

Member Function Documentation

◆ TypeName()

◆ clone() [1/2]

◆ clone() [2/2]

◆ autoMap()

◆ rmap()

◆ updateCoeffs()

◆ write()

Field Documentation

◆ pName_

◆ cyclicPatchName_

◆ cyclicPatchLabel_

◆ orientation_

◆ initWallSf_

◆ initCyclicSf_

◆ nbrCyclicSf_

◆ openFraction_

◆ openingTime_

◆ maxOpenFractionDelta_

◆ curTimeIndex_

◆ minThresholdValue_

◆ fBased_

◆ baffleActivated_