wallDampingModel Class Reference

Wall damping models can be used to filter interfacial models near the walls. This is particularly useful for the lift force because of its dependence on the velocity gradient. More...

Inheritance diagram for wallDampingModel:

Collaboration diagram for wallDampingModel:

Public Member Functions
	TypeName ("wallDampingModel")
	Runtime type information. More...
	declareRunTimeSelectionTable (autoPtr, wallDampingModel, dictionary,(const dictionary &dict, const phasePair &pair),(dict, pair))
	wallDampingModel (const dictionary &dict, const phasePair &pair)
	Construct from components. More...
virtual	~wallDampingModel ()
	Destructor. More...
virtual tmp< volScalarField >	damping () const
	Return damped coefficient. More...
virtual tmp< surfaceScalarField >	dampingf () const
	Return damped face coefficient. More...
Public Member Functions inherited from wallDependentModel
	wallDependentModel (const fvMesh &mesh)
	Construct from a mesh. More...
	wallDependentModel (const wallDependentModel &)=delete
	Disallow default bitwise copy construction. More...
virtual	~wallDependentModel ()
	Destructor. More...
const volScalarField &	yWall () const
	Return the wall distance, creating and storing it if necessary. More...
const volVectorField &	nWall () const
	Return the wall normal, creating and storing it if necessary. More...
void	operator= (const wallDependentModel &)=delete
	Disallow default bitwise assignment. More...

Static Public Member Functions
static autoPtr< wallDampingModel >	New (const dictionary &dict, const phasePair &pair)

Static Public Attributes
static const dimensionSet	dimF
	Coefficient dimensions. More...

Protected Member Functions
virtual tmp< volScalarField >	limiter () const =0
	Return the force limiter field. More...

Protected Attributes
const phasePair &	pair_
	Phase pair. More...
const dimensionedScalar	Cd_
	Diameter coefficient. More...
const dimensionedScalar	zeroWallDist_
	Distance from wall below which the field is damped to zero. More...
const Switch	zeroInNearWallCells_
	Set the value to zero in wall-adjacent cells. More...

Detailed Description

Wall damping models can be used to filter interfacial models near the walls. This is particularly useful for the lift force because of its dependence on the velocity gradient.

All damping functions accept the following parameters:

• Cd: A coefficient for filtering the distance from the wall based on the dispersed phase diameter. This can be useful to correct gradient sampling error when the dispersed phase diameter is significantly larger than near wall mesh resolution.
• zeroWallDist: A constant offset from the wall for the zero point of the damping function. Below this distance, the damping will reduce the value to zero.
• zeroInNearWallCells: A switch which sets the value to zero in near wall cells regardless of the other parameters. This is recommended to be set if a lift force is applied together with turbulent wall functions.

Usage

Property	Description	Required	Default value
Cd	Diameter coefficient	yes	none
zeroWallDist	Offset from wall	no	0
zeroInNearWallCells	Zero near wall cells	no	no

Source files

• wallDampingModel.H
• wallDampingModel.C
• wallDampingModelNew.C

Definition at line 97 of file wallDampingModel.H.

Constructor & Destructor Documentation

wallDampingModel()

wallDampingModel	(	const dictionary &	dict,
		const phasePair &	pair
	)

Construct from components.

~wallDampingModel()

virtual ~wallDampingModel ( )

virtual

Destructor.

Member Function Documentation

limiter()

virtual tmp<volScalarField> limiter ( ) const

protectedpure virtual

Return the force limiter field.

Implemented in cosine, linear, and sine.

TypeName()

TypeName

(

"wallDampingModel"

)

Runtime type information.

declareRunTimeSelectionTable()

declareRunTimeSelectionTable	(	autoPtr	,
		wallDampingModel	,
		dictionary	,
		(const dictionary &dict, const phasePair &pair)	,
		(dict, pair)
	)

New()

static autoPtr<wallDampingModel> New ( const dictionary &  dict, const phasePair &  pair  )

static

damping()

virtual tmp<volScalarField> damping ( ) const

virtual

Return damped coefficient.

dampingf()

virtual tmp<surfaceScalarField> dampingf ( ) const

virtual

Return damped face coefficient.

Member Data Documentation

pair_

const phasePair& pair_

protected

Phase pair.

Definition at line 106 of file wallDampingModel.H.

Cd_

const dimensionedScalar Cd_

protected

Diameter coefficient.

Definition at line 109 of file wallDampingModel.H.

zeroWallDist_

const dimensionedScalar zeroWallDist_

protected

Distance from wall below which the field is damped to zero.

Definition at line 112 of file wallDampingModel.H.

zeroInNearWallCells_

const Switch zeroInNearWallCells_

protected

Set the value to zero in wall-adjacent cells.

Definition at line 115 of file wallDampingModel.H.

dimF

const dimensionSet dimF

static

Coefficient dimensions.

Definition at line 148 of file wallDampingModel.H.

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

• applications/solvers/multiphase/multiphaseEulerFoam/interfacialModels/wallDampingModels/wallDampingModel/wallDampingModel.H