Public Member Functions | Private Attributes
turbulentMixingLengthDissipationRateInletFvPatchScalarField Class Reference
RAS turbulence » RAS boundary conditions

This boundary condition provides a turbulence dissipation, $\epsilon$ (epsilon) inlet condition based on a specified mixing length. The patch values are calculated using: More...

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Public Member Functions

 TypeName ("turbulentMixingLengthDissipationRateInlet")
 Runtime type information. More...
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField (const fvPatch &, const DimensionedField< scalar, volMesh > &)
 Construct from patch and internal field. More...
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField (const fvPatch &, const DimensionedField< scalar, volMesh > &, const dictionary &)
 Construct from patch, internal field and dictionary. More...
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField (const turbulentMixingLengthDissipationRateInletFvPatchScalarField &, const fvPatch &, const DimensionedField< scalar, volMesh > &, const fvPatchFieldMapper &)
 Construct by mapping given. More...
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField (const turbulentMixingLengthDissipationRateInletFvPatchScalarField &)
 Construct as copy. More...
 
virtual tmp< fvPatchScalarField > clone () const
 Construct and return a clone. More...
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField (const turbulentMixingLengthDissipationRateInletFvPatchScalarField &, const DimensionedField< scalar, volMesh > &)
 Construct as copy 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 void updateCoeffs ()
 Update the coefficients associated with the patch field. More...
 
virtual void write (Ostream &) const
 Write. More...
 

Private Attributes

scalar mixingLength_
 Turbulent length scale. More...
 
word kName_
 Name of the turbulent kinetic energy field. More...
 

Detailed Description

This boundary condition provides a turbulence dissipation, $\epsilon$ (epsilon) inlet condition based on a specified mixing length. The patch values are calculated using:

\[ \epsilon_p = \frac{C_{\mu}^{0.75} k^{1.5}}{L} \]

where

$ \epsilon_p $ = patch epsilon values
$ C_{\mu} $ = Model coefficient, set to 0.09
$ k $ = turbulence kinetic energy
$ L $ = length scale


Patch usage

Property Description Required Default value
mixingLength Length scale [m] yes
phi flux field name no phi
k turbulence kinetic energy field name no k

Example of the boundary condition specification: 

    myPatch
    {
        type            turbulentMixingLengthDissipationRateInlet;
        mixingLength    0.005;
        value           uniform 200;   // placeholder
    }
Note
In the event of reverse flow, a zero-gradient condition is applied
See also
Foam::inletOutletFvPatchField
Source files

Definition at line 127 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.H.

Constructor & Destructor Documentation

◆ turbulentMixingLengthDissipationRateInletFvPatchScalarField() [1/5]

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

Construct from patch and internal field.

Definition at line 42 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.C.

◆ turbulentMixingLengthDissipationRateInletFvPatchScalarField() [2/5]

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

Construct from patch, internal field and dictionary.

Definition at line 74 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.C.

References dict, dictionary::lookupOrDefault(), fvPatchField::operator=(), and p.

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◆ turbulentMixingLengthDissipationRateInletFvPatchScalarField() [3/5]

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

Construct by mapping given.

turbulentMixingLengthDissipationRateInletFvPatchScalarField onto a new patch

Definition at line 59 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.C.

◆ turbulentMixingLengthDissipationRateInletFvPatchScalarField() [4/5]

turbulentMixingLengthDissipationRateInletFvPatchScalarField ( const turbulentMixingLengthDissipationRateInletFvPatchScalarField &  ptf)

Construct as copy.

Definition at line 96 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.C.

◆ turbulentMixingLengthDissipationRateInletFvPatchScalarField() [5/5]

turbulentMixingLengthDissipationRateInletFvPatchScalarField ( const turbulentMixingLengthDissipationRateInletFvPatchScalarField &  ptf,
const DimensionedField< scalar, volMesh > &  iF 
)

Construct as copy setting internal field reference.

Definition at line 108 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.C.

Member Function Documentation

◆ TypeName()

TypeName ( "turbulentMixingLengthDissipationRateInlet"  )

Runtime type information.

◆ clone() [1/2]

virtual tmp<fvPatchScalarField> clone ( ) const
inlinevirtual

Construct and return a clone.

Definition at line 181 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.H.

◆ clone() [2/2]

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

Construct and return a clone setting internal field reference.

Definition at line 201 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.H.

◆ updateCoeffs()

void updateCoeffs ( )
virtual

Update the coefficients associated with the patch field.

Definition at line 121 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.C.

References turbulenceModel::coeffDict(), dimensionedInternalField(), Foam::constant::atomic::group, IOobject::groupName(), turbulentMixingLengthDissipationRateInletFvPatchScalarField::kName_, dictionary::lookupOrDefault(), turbulentMixingLengthDissipationRateInletFvPatchScalarField::mixingLength_, Foam::pos(), Foam::pow(), turbulenceModel::propertiesName, and Foam::sqrt().

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◆ write()

void write ( Ostream &  os) const
virtual

Write.

Definition at line 157 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.C.

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

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Field Documentation

◆ mixingLength_

scalar mixingLength_
private

Turbulent length scale.

Definition at line 134 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.H.

Referenced by turbulentMixingLengthDissipationRateInletFvPatchScalarField::updateCoeffs().

◆ kName_

word kName_
private

Name of the turbulent kinetic energy field.

Definition at line 137 of file turbulentMixingLengthDissipationRateInletFvPatchScalarField.H.

Referenced by turbulentMixingLengthDissipationRateInletFvPatchScalarField::updateCoeffs().

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

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