BACKPORT: turbulent inlets handled as inletOutlet

src/finiteVolume/fields/fvPatchFields/derived/turbulentIntensityKineticEnergyInlet/turbulentIntensityKineticEnergyInletFvPatchScalarField.C

@@ -39,11 +39,15 @@ turbulentIntensityKineticEnergyInletFvPatchScalarField
     const DimensionedField<scalar, volMesh>& iF
 )
 :
-    fixedValueFvPatchField<scalar>(p, iF),
+    inletOutletFvPatchScalarField(p, iF),
-    UName_("U"),
+    intensity_(0.0),
-    intensity_(0.05)
+    UName_("undefined-U"),
-{}
+    phiName_("undefined-phi")
-
+{
+    this->refValue() = 0.0;
+    this->refGrad() = 0.0;
+    this->valueFraction() = 0.0;
+}
 
 Foam::turbulentIntensityKineticEnergyInletFvPatchScalarField::
 turbulentIntensityKineticEnergyInletFvPatchScalarField
@@ -54,9 +58,10 @@ turbulentIntensityKineticEnergyInletFvPatchScalarField
     const fvPatchFieldMapper& mapper
 )
 :
-    fixedValueFvPatchField<scalar>(ptf, p, iF, mapper),
+    inletOutletFvPatchScalarField(ptf, p, iF, mapper),
+    intensity_(ptf.intensity_),
     UName_(ptf.UName_),
-    intensity_(ptf.intensity_)
+    phiName_(ptf.phiName_)
 {}
 
 
@@ -68,9 +73,10 @@ turbulentIntensityKineticEnergyInletFvPatchScalarField
     const dictionary& dict
 )
 :
-    fixedValueFvPatchField<scalar>(p, iF, dict),
+    inletOutletFvPatchScalarField(p, iF),
+    intensity_(readScalar(dict.lookup("intensity"))),
     UName_(dict.lookupOrDefault<word>("U", "U")),
-    intensity_(readScalar(dict.lookup("intensity")))
+    phiName_(dict.lookupOrDefault<word>("phi", "phi"))
 {
     if (intensity_ < 0 || intensity_ > 1)
     {
@@ -88,8 +94,13 @@ turbulentIntensityKineticEnergyInletFvPatchScalarField
             << " in file " << this->dimensionedInternalField().objectPath()
             << exit(FatalError);
     }
-}
 
+    fvPatchScalarField::operator=(scalarField("value", dict, p.size()));
+
+    this->refValue() = 0.0;
+    this->refGrad() = 0.0;
+    this->valueFraction() = 0.0;
+}
 
 Foam::turbulentIntensityKineticEnergyInletFvPatchScalarField::
 turbulentIntensityKineticEnergyInletFvPatchScalarField
@@ -97,9 +108,10 @@ turbulentIntensityKineticEnergyInletFvPatchScalarField
     const turbulentIntensityKineticEnergyInletFvPatchScalarField& ptf
 )
 :
-    fixedValueFvPatchField<scalar>(ptf),
+    inletOutletFvPatchScalarField(ptf),
+    intensity_(ptf.intensity_),
     UName_(ptf.UName_),
-    intensity_(ptf.intensity_)
+    phiName_(ptf.phiName_)
 {}
 
 
@@ -110,16 +122,16 @@ turbulentIntensityKineticEnergyInletFvPatchScalarField
     const DimensionedField<scalar, volMesh>& iF
 )
 :
-    fixedValueFvPatchField<scalar>(ptf, iF),
+    inletOutletFvPatchScalarField(ptf, iF),
+    intensity_(ptf.intensity_),
     UName_(ptf.UName_),
-    intensity_(ptf.intensity_)
+    phiName_(ptf.phiName_)
 {}
 
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-void
+void Foam::turbulentIntensityKineticEnergyInletFvPatchScalarField::
-Foam::turbulentIntensityKineticEnergyInletFvPatchScalarField::
 updateCoeffs()
 {
     if (updated())
@@ -127,12 +139,16 @@ updateCoeffs()
         return;
     }
 
-    const fvPatchField<vector>& Up =
+    const fvPatchVectorField& Up =
-        lookupPatchField<volVectorField, vector>(UName_);
+        patch().lookupPatchField<volVectorField, vector>(UName_);
 
-    operator==(1.5*sqr(intensity_)*magSqr(Up));
+    const fvsPatchScalarField& phip =
+        patch().lookupPatchField<surfaceScalarField, scalar>(phiName_);
 
-    fixedValueFvPatchField<scalar>::updateCoeffs();
+    this->refValue() = SMALL + 1.5*sqr(intensity_)*magSqr(Up);
+    this->valueFraction() = neg(phip);
+
+    inletOutletFvPatchScalarField::updateCoeffs();
 }
 
 
@@ -141,12 +157,10 @@ void Foam::turbulentIntensityKineticEnergyInletFvPatchScalarField::write
     Ostream& os
 ) const
 {
-    fvPatchField<scalar>::write(os);
+    fvPatchScalarField::write(os);
-    if (UName_ != "U")
-    {
-        os.writeKeyword("U") << UName_ << token::END_STATEMENT << nl;
-    }
     os.writeKeyword("intensity") << intensity_ << token::END_STATEMENT << nl;
+    os.writeKeyword("U") << UName_ << token::END_STATEMENT << nl;
+    os.writeKeyword("phi") << phiName_ << token::END_STATEMENT << nl;
     writeEntry("value", os);
 }
 

src/finiteVolume/fields/fvPatchFields/derived/turbulentIntensityKineticEnergyInlet/turbulentIntensityKineticEnergyInletFvPatchScalarField.H

@@ -30,7 +30,7 @@ Description
     fraction of the mean velocity
 
     Example of the boundary condition specification:
-    @verbatim
+    \verbatim
         inlet
         {
             type        turbulentIntensityKineticEnergyInlet;
@@ -38,7 +38,7 @@ Description
             intensity   0.05;           // 5% turbulence
             value       uniform 1;      // placeholder
         }
-    @endverbatim
+    \endverbatim
 
 SourceFiles
     turbulentIntensityKineticEnergyInletFvPatchScalarField.C
@@ -48,7 +48,7 @@ SourceFiles
 #ifndef turbulentIntensityKineticEnergyInletFvPatchScalarField_H
 #define turbulentIntensityKineticEnergyInletFvPatchScalarField_H
 
-#include "fixedValueFvPatchFields.H"
+#include "inletOutletFvPatchFields.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -61,16 +61,19 @@ namespace Foam
 
 class turbulentIntensityKineticEnergyInletFvPatchScalarField
 :
-    public fixedValueFvPatchScalarField
+    public inletOutletFvPatchScalarField
 {
     // Private data
 
-        //- Name of velocity field
-        word UName_;
-
         //- Turbulent intensity as fraction of mean velocity
         scalar intensity_;
 
+        //- Name of the velocity field
+        word UName_;
+
+        //- Name of the flux field
+        word phiName_;
+
 
 public:
 

src/turbulenceModels/compressible/RAS/derivedFvPatchFields/turbulentMixingLengthDissipationRateInlet/turbulentMixingLengthDissipationRateInletFvPatchScalarField.C

@@ -47,9 +47,15 @@ turbulentMixingLengthDissipationRateInletFvPatchScalarField
     const DimensionedField<scalar, volMesh>& iF
 )
 :
-    fixedValueFvPatchField<scalar>(p, iF),
+    inletOutletFvPatchScalarField(p, iF),
-    mixingLength_(0.001)
+    mixingLength_(0.0),
-{}
+    phiName_("undefined-phi"),
+    kName_("undefined-k")
+{
+    this->refValue() = 0.0;
+    this->refGrad() = 0.0;
+    this->valueFraction() = 0.0;
+}
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField::
 turbulentMixingLengthDissipationRateInletFvPatchScalarField
@@ -60,8 +66,10 @@ turbulentMixingLengthDissipationRateInletFvPatchScalarField
     const fvPatchFieldMapper& mapper
 )
 :
-    fixedValueFvPatchField<scalar>(ptf, p, iF, mapper),
+    inletOutletFvPatchScalarField(ptf, p, iF, mapper),
-    mixingLength_(ptf.mixingLength_)
+    mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
+    kName_(ptf.kName_)
 {}
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField::
@@ -72,9 +80,17 @@ turbulentMixingLengthDissipationRateInletFvPatchScalarField
     const dictionary& dict
 )
 :
-    fixedValueFvPatchField<scalar>(p, iF, dict),
+    inletOutletFvPatchScalarField(p, iF),
-    mixingLength_(readScalar(dict.lookup("mixingLength")))
+    mixingLength_(readScalar(dict.lookup("mixingLength"))),
-{}
+    phiName_(dict.lookupOrDefault<word>("phi", "phi")),
+    kName_(dict.lookupOrDefault<word>("k", "k"))
+{
+    fvPatchScalarField::operator=(scalarField("value", dict, p.size()));
+
+    this->refValue() = 0.0;
+    this->refGrad() = 0.0;
+    this->valueFraction() = 0.0;
+}
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField::
 turbulentMixingLengthDissipationRateInletFvPatchScalarField
@@ -82,8 +98,10 @@ turbulentMixingLengthDissipationRateInletFvPatchScalarField
     const turbulentMixingLengthDissipationRateInletFvPatchScalarField& ptf
 )
 :
-    fixedValueFvPatchField<scalar>(ptf),
+    inletOutletFvPatchScalarField(ptf),
-    mixingLength_(ptf.mixingLength_)
+    mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
+    kName_(ptf.kName_)
 {}
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField::
@@ -93,8 +111,10 @@ turbulentMixingLengthDissipationRateInletFvPatchScalarField
     const DimensionedField<scalar, volMesh>& iF
 )
 :
-    fixedValueFvPatchField<scalar>(ptf, iF),
+    inletOutletFvPatchScalarField(ptf, iF),
-    mixingLength_(ptf.mixingLength_)
+    mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
+    kName_(ptf.kName_)
 {}
 
 
@@ -115,12 +135,16 @@ void turbulentMixingLengthDissipationRateInletFvPatchScalarField::updateCoeffs()
 
     const scalar Cmu75 = pow(Cmu, 0.75);
 
-    const fvPatchField<scalar>& kp =
+    const fvPatchScalarField& kp =
-        lookupPatchField<volScalarField, scalar>("k");
+        patch().lookupPatchField<volScalarField, scalar>(kName_);
 
-    operator==(Cmu75*kp*sqrt(kp)/mixingLength_);
+    const fvsPatchScalarField& phip =
+        patch().lookupPatchField<surfaceScalarField, scalar>(phiName_);
 
-    fixedValueFvPatchField<scalar>::updateCoeffs();
+    this->refValue() = Cmu75*kp*sqrt(kp)/mixingLength_;
+    this->valueFraction() = neg(phip);
+
+    inletOutletFvPatchScalarField::updateCoeffs();
 }
 
 
@@ -129,9 +153,11 @@ void turbulentMixingLengthDissipationRateInletFvPatchScalarField::write
     Ostream& os
 ) const
 {
-    fvPatchField<scalar>::write(os);
+    fvPatchScalarField::write(os);
     os.writeKeyword("mixingLength")
         << mixingLength_ << token::END_STATEMENT << nl;
+    os.writeKeyword("phi") << phiName_ << token::END_STATEMENT << nl;
+    os.writeKeyword("k") << kName_ << token::END_STATEMENT << nl;
     writeEntry("value", os);
 }
 

src/turbulenceModels/compressible/RAS/derivedFvPatchFields/turbulentMixingLengthDissipationRateInlet/turbulentMixingLengthDissipationRateInletFvPatchScalarField.H

@@ -30,14 +30,14 @@ Description
     Calculate epsilon via the mixing length [m]
 
     Example of the boundary condition specification:
-    @verbatim
+    \verbatim
         inlet
         {
             type            compressible::turbulentMixingLengthDissipationRateInlet;
             mixingLength    0.005;         // 5 mm
             value           uniform 200;   // placeholder
         }
-    @endverbatim
+    \endverbatim
 
 SourceFiles
     turbulentMixingLengthDissipationRateInletFvPatchScalarField.C
@@ -47,7 +47,7 @@ SourceFiles
 #ifndef compressibleturbulentMixingLengthDissipationRateInletFvPatchField_H
 #define compressibleturbulentMixingLengthDissipationRateInletFvPatchField_H
 
-#include "fixedValueFvPatchFields.H"
+#include "inletOutletFvPatchFields.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -62,13 +62,20 @@ namespace compressible
 
 class turbulentMixingLengthDissipationRateInletFvPatchScalarField
 :
-    public fixedValueFvPatchScalarField
+    public inletOutletFvPatchScalarField
 {
     // Private data
 
         //- turbulent length scale
         scalar mixingLength_;
 
+        //- Name of the flux field
+        word phiName_;
+
+        //- Name of the turbulent kinetic energy field
+        word kName_;
+
+
 public:
 
     //- Runtime type information

src/turbulenceModels/compressible/RAS/derivedFvPatchFields/turbulentMixingLengthFrequencyInlet/turbulentMixingLengthFrequencyInletFvPatchScalarField.C

@@ -47,10 +47,15 @@ turbulentMixingLengthFrequencyInletFvPatchScalarField
     const DimensionedField<scalar, volMesh>& iF
 )
 :
-    fixedValueFvPatchField<scalar>(p, iF),
+    inletOutletFvPatchScalarField(p, iF),
     mixingLength_(0.0),
-    kName_("k")
+    phiName_("undefined-phi"),
-{}
+    kName_("undefined-k")
+{
+    this->refValue() = 0.0;
+    this->refGrad() = 0.0;
+    this->valueFraction() = 0.0;
+}
 
 turbulentMixingLengthFrequencyInletFvPatchScalarField::
 turbulentMixingLengthFrequencyInletFvPatchScalarField
@@ -61,8 +66,9 @@ turbulentMixingLengthFrequencyInletFvPatchScalarField
     const fvPatchFieldMapper& mapper
 )
 :
-    fixedValueFvPatchField<scalar>(ptf, p, iF, mapper),
+    inletOutletFvPatchScalarField(ptf, p, iF, mapper),
     mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
     kName_(ptf.kName_)
 {}
 
@@ -74,10 +80,17 @@ turbulentMixingLengthFrequencyInletFvPatchScalarField
     const dictionary& dict
 )
 :
-    fixedValueFvPatchField<scalar>(p, iF, dict),
+    inletOutletFvPatchScalarField(p, iF),
     mixingLength_(readScalar(dict.lookup("mixingLength"))),
+    phiName_(dict.lookupOrDefault<word>("phi", "phi")),
     kName_(dict.lookupOrDefault<word>("k", "k"))
-{}
+{
+    fvPatchScalarField::operator=(scalarField("value", dict, p.size()));
+
+    this->refValue() = 0.0;
+    this->refGrad() = 0.0;
+    this->valueFraction() = 0.0;
+}
 
 turbulentMixingLengthFrequencyInletFvPatchScalarField::
 turbulentMixingLengthFrequencyInletFvPatchScalarField
@@ -85,8 +98,9 @@ turbulentMixingLengthFrequencyInletFvPatchScalarField
     const turbulentMixingLengthFrequencyInletFvPatchScalarField& ptf
 )
 :
-    fixedValueFvPatchField<scalar>(ptf),
+    inletOutletFvPatchScalarField(ptf),
     mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
     kName_(ptf.kName_)
 {}
 
@@ -97,8 +111,9 @@ turbulentMixingLengthFrequencyInletFvPatchScalarField
     const DimensionedField<scalar, volMesh>& iF
 )
 :
-    fixedValueFvPatchField<scalar>(ptf, iF),
+    inletOutletFvPatchScalarField(ptf, iF),
     mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
     kName_(ptf.kName_)
 {}
 
@@ -120,12 +135,16 @@ void turbulentMixingLengthFrequencyInletFvPatchScalarField::updateCoeffs()
 
     const scalar Cmu25 = pow(Cmu, 0.25);
 
-    const fvPatchField<scalar>& kp =
+    const fvPatchScalarField& kp =
-        lookupPatchField<volScalarField, scalar>(kName_);
+        patch().lookupPatchField<volScalarField, scalar>(kName_);
 
-    operator==(sqrt(kp)/(Cmu25*mixingLength_));
+    const fvsPatchScalarField& phip =
+        patch().lookupPatchField<surfaceScalarField, scalar>(phiName_);
 
-    fixedValueFvPatchField<scalar>::updateCoeffs();
+    this->refValue() = sqrt(kp)/(Cmu25*mixingLength_);
+    this->valueFraction() = neg(phip);
+
+    inletOutletFvPatchScalarField::updateCoeffs();
 }
 
 
@@ -134,9 +153,10 @@ void turbulentMixingLengthFrequencyInletFvPatchScalarField::write
     Ostream& os
 ) const
 {
-    fvPatchField<scalar>::write(os);
+    fvPatchScalarField::write(os);
     os.writeKeyword("mixingLength")
         << mixingLength_ << token::END_STATEMENT << nl;
+    os.writeKeyword("phi") << phiName_ << token::END_STATEMENT << nl;
     os.writeKeyword("k") << kName_ << token::END_STATEMENT << nl;
     writeEntry("value", os);
 }

src/turbulenceModels/compressible/RAS/derivedFvPatchFields/turbulentMixingLengthFrequencyInlet/turbulentMixingLengthFrequencyInletFvPatchScalarField.H

@@ -25,19 +25,52 @@ License
 Class
     Foam::compressible::turbulentMixingLengthFrequencyInletFvPatchScalarField
 
+Group
+    grpIcoRASBoundaryConditions grpInletBoundaryConditions
+
 Description
-    Calculate omega via the mixing length
+    This boundary condition provides a turbulence specific dissipation,
+    \f$\omega\f$ (omega) inlet condition based on a specified mixing length.
+    The patch values are calculated using:
+
+        \f[
+            \omega_p = \frac{k^{0.5}}{C_{\mu}^{0.25} L}
+        \f]
+   
+    where
+
+    \vartable
+        \omega_p | patch omega values
+        C_{\mu} | Model coefficient, set to 0.09
+        k       | turbulence kinetic energy
+        L       | length scale
+    \endvartable
+
+    \heading Patch usage
+
+    \table
+        Property     | Description             | Required    | Default value
+        mixingLength | Length scale [m]        | yes         |
+        phi          | flux field name         | no          | phi
+        k            | turbulence kinetic energy field name | no | k
+    \endtable
 
     Example of the boundary condition specification:
-    @verbatim
+    \verbatim
-        inlet
+    myPatch
-        {
+    {
-            type            compressible::turbulentMixingLengthFrequencyInlet;
+        type            turbulentMixingLengthFrequencyInlet;
-            mixingLength    0.005;         // 5 mm
+        mixingLength    0.005;
-            k               k;             // turbulent k field
+        value           uniform 200;   // placeholder
-            value           uniform 5;     // initial value
+    }
-        }
+    \endverbatim
-    @endverbatim
+
+Note
+    In the event of reverse flow, a zero-gradient condition is applied
+
+SeeAlso
+    Foam::inletOutletFvPatchField
+
 
 SourceFiles
     turbulentMixingLengthFrequencyInletFvPatchScalarField.C
@@ -47,7 +80,7 @@ SourceFiles
 #ifndef compressibleturbulentMixingLengthFrequencyInletFvPatchScalarField_H
 #define compressibleturbulentMixingLengthFrequencyInletFvPatchScalarField_H
 
-#include "fixedValueFvPatchFields.H"
+#include "inletOutletFvPatchFields.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -62,13 +95,16 @@ namespace compressible
 
 class turbulentMixingLengthFrequencyInletFvPatchScalarField
 :
-    public fixedValueFvPatchScalarField
+    public inletOutletFvPatchScalarField
 {
     // Private data
 
         //- Turbulent length scale
         scalar mixingLength_;
 
+        //- Name of the flux field
+        word phiName_;
+
         //- Name of the turbulent kinetic energy field
         word kName_;
 

src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/turbulentMixingLengthDissipationRateInlet/turbulentMixingLengthDissipationRateInletFvPatchScalarField.C

@@ -47,9 +47,15 @@ turbulentMixingLengthDissipationRateInletFvPatchScalarField
     const DimensionedField<scalar, volMesh>& iF
 )
 :
-    fixedValueFvPatchField<scalar>(p, iF),
+    inletOutletFvPatchScalarField(p, iF),
-    mixingLength_(0.001)
+    mixingLength_(0.0),
-{}
+    phiName_("undefined-phi"),
+    kName_("undefined-k")
+{
+    this->refValue() = 0.0;
+    this->refGrad() = 0.0;
+    this->valueFraction() = 0.0;
+}
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField::
 turbulentMixingLengthDissipationRateInletFvPatchScalarField
@@ -60,8 +66,10 @@ turbulentMixingLengthDissipationRateInletFvPatchScalarField
     const fvPatchFieldMapper& mapper
 )
 :
-    fixedValueFvPatchField<scalar>(ptf, p, iF, mapper),
+    inletOutletFvPatchScalarField(ptf, p, iF, mapper),
-    mixingLength_(ptf.mixingLength_)
+    mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
+    kName_(ptf.kName_)
 {}
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField::
@@ -72,9 +80,17 @@ turbulentMixingLengthDissipationRateInletFvPatchScalarField
     const dictionary& dict
 )
 :
-    fixedValueFvPatchField<scalar>(p, iF, dict),
+    inletOutletFvPatchScalarField(p, iF),
-    mixingLength_(readScalar(dict.lookup("mixingLength")))
+    mixingLength_(readScalar(dict.lookup("mixingLength"))),
-{}
+    phiName_(dict.lookupOrDefault<word>("phi", "phi")),
+    kName_(dict.lookupOrDefault<word>("k", "k"))
+{
+    fvPatchScalarField::operator=(scalarField("value", dict, p.size()));
+
+    this->refValue() = 0.0;
+    this->refGrad() = 0.0;
+    this->valueFraction() = 0.0;
+}
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField::
 turbulentMixingLengthDissipationRateInletFvPatchScalarField
@@ -82,8 +98,10 @@ turbulentMixingLengthDissipationRateInletFvPatchScalarField
     const turbulentMixingLengthDissipationRateInletFvPatchScalarField& ptf
 )
 :
-    fixedValueFvPatchField<scalar>(ptf),
+    inletOutletFvPatchScalarField(ptf),
-    mixingLength_(ptf.mixingLength_)
+    mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
+    kName_(ptf.kName_)
 {}
 
 turbulentMixingLengthDissipationRateInletFvPatchScalarField::
@@ -93,8 +111,10 @@ turbulentMixingLengthDissipationRateInletFvPatchScalarField
     const DimensionedField<scalar, volMesh>& iF
 )
 :
-    fixedValueFvPatchField<scalar>(ptf, iF),
+    inletOutletFvPatchScalarField(ptf, iF),
-    mixingLength_(ptf.mixingLength_)
+    mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
+    kName_(ptf.kName_)
 {}
 
 
@@ -115,12 +135,16 @@ void turbulentMixingLengthDissipationRateInletFvPatchScalarField::updateCoeffs()
 
     const scalar Cmu75 = pow(Cmu, 0.75);
 
-    const fvPatchField<scalar>& kp =
+    const fvPatchScalarField& kp =
-        lookupPatchField<volScalarField, scalar>("k");
+        patch().lookupPatchField<volScalarField, scalar>(kName_);
 
-    operator==(Cmu75*kp*sqrt(kp)/mixingLength_);
+    const fvsPatchScalarField& phip =
+        patch().lookupPatchField<surfaceScalarField, scalar>(phiName_);
 
-    fixedValueFvPatchField<scalar>::updateCoeffs();
+    this->refValue() = Cmu75*kp*sqrt(kp)/mixingLength_;
+    this->valueFraction() = neg(phip);
+
+    inletOutletFvPatchScalarField::updateCoeffs();
 }
 
 
@@ -129,9 +153,11 @@ void turbulentMixingLengthDissipationRateInletFvPatchScalarField::write
     Ostream& os
 ) const
 {
-    fvPatchField<scalar>::write(os);
+    fvPatchScalarField::write(os);
     os.writeKeyword("mixingLength")
         << mixingLength_ << token::END_STATEMENT << nl;
+    os.writeKeyword("phi") << phiName_ << token::END_STATEMENT << nl;
+    os.writeKeyword("k") << kName_ << token::END_STATEMENT << nl;
     writeEntry("value", os);
 }
 

src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/turbulentMixingLengthDissipationRateInlet/turbulentMixingLengthDissipationRateInletFvPatchScalarField.H

@@ -30,14 +30,14 @@ Description
     Calculate epsilon via the mixing length [m]
 
     Example of the boundary condition specification:
-    @verbatim
+    \verbatim
         inlet
         {
             type            turbulentMixingLengthDissipationRateInlet;
             mixingLength    0.005;         // 5 mm
             value           uniform 200;   // placeholder
         }
-    @endverbatim
+    \endverbatim
 
 SourceFiles
     turbulentMixingLengthDissipationRateInletFvPatchScalarField.C
@@ -47,7 +47,7 @@ SourceFiles
 #ifndef incompressibleturbulentMixingLengthDissipationRateInlet_H
 #define incompressibleturbulentMixingLengthDissipationRateInlet_H
 
-#include "fixedValueFvPatchFields.H"
+#include "inletOutletFvPatchFields.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -62,13 +62,20 @@ namespace incompressible
 
 class turbulentMixingLengthDissipationRateInletFvPatchScalarField
 :
-    public fixedValueFvPatchScalarField
+    public inletOutletFvPatchScalarField
 {
     // Private data
 
         //- turbulent length scale
         scalar mixingLength_;
 
+        //- Name of the flux field
+        word phiName_;
+
+        //- Name of the turbulent kinetic energy field
+        word kName_;
+
+
 public:
 
     //- Runtime type information

src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/turbulentMixingLengthFrequencyInlet/turbulentMixingLengthFrequencyInletFvPatchScalarField.C

@@ -47,10 +47,15 @@ turbulentMixingLengthFrequencyInletFvPatchScalarField
     const DimensionedField<scalar, volMesh>& iF
 )
 :
-    fixedValueFvPatchField<scalar>(p, iF),
+    inletOutletFvPatchScalarField(p, iF),
     mixingLength_(0.0),
+    phiName_("undefined-phi"),
     kName_("undefined-k")
-{}
+{
+    this->refValue() = 0.0;
+    this->refGrad() = 0.0;
+    this->valueFraction() = 0.0;
+}
 
 turbulentMixingLengthFrequencyInletFvPatchScalarField::
 turbulentMixingLengthFrequencyInletFvPatchScalarField
@@ -61,8 +66,9 @@ turbulentMixingLengthFrequencyInletFvPatchScalarField
     const fvPatchFieldMapper& mapper
 )
 :
-    fixedValueFvPatchField<scalar>(ptf, p, iF, mapper),
+    inletOutletFvPatchScalarField(ptf, p, iF, mapper),
     mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
     kName_(ptf.kName_)
 {}
 
@@ -74,10 +80,17 @@ turbulentMixingLengthFrequencyInletFvPatchScalarField
     const dictionary& dict
 )
 :
-    fixedValueFvPatchField<scalar>(p, iF, dict),
+    inletOutletFvPatchScalarField(p, iF),
     mixingLength_(readScalar(dict.lookup("mixingLength"))),
+    phiName_(dict.lookupOrDefault<word>("phi", "phi")),
     kName_(dict.lookupOrDefault<word>("k", "k"))
-{}
+{
+    fvPatchScalarField::operator=(scalarField("value", dict, p.size()));
+
+    this->refValue() = 0.0;
+    this->refGrad() = 0.0;
+    this->valueFraction() = 0.0;
+}
 
 turbulentMixingLengthFrequencyInletFvPatchScalarField::
 turbulentMixingLengthFrequencyInletFvPatchScalarField
@@ -85,8 +98,9 @@ turbulentMixingLengthFrequencyInletFvPatchScalarField
     const turbulentMixingLengthFrequencyInletFvPatchScalarField& ptf
 )
 :
-    fixedValueFvPatchField<scalar>(ptf),
+    inletOutletFvPatchScalarField(ptf),
     mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
     kName_(ptf.kName_)
 {}
 
@@ -97,8 +111,9 @@ turbulentMixingLengthFrequencyInletFvPatchScalarField
     const DimensionedField<scalar, volMesh>& iF
 )
 :
-    fixedValueFvPatchField<scalar>(ptf, iF),
+    inletOutletFvPatchScalarField(ptf, iF),
     mixingLength_(ptf.mixingLength_),
+    phiName_(ptf.phiName_),
     kName_(ptf.kName_)
 {}
 
@@ -120,12 +135,16 @@ void turbulentMixingLengthFrequencyInletFvPatchScalarField::updateCoeffs()
 
     const scalar Cmu25 = pow(Cmu, 0.25);
 
-    const fvPatchField<scalar>& kp =
+    const fvPatchScalarField& kp =
-        lookupPatchField<volScalarField, scalar>(kName_);
+        patch().lookupPatchField<volScalarField, scalar>(kName_);
 
-    operator==(sqrt(kp)/(Cmu25*mixingLength_));
+    const fvsPatchScalarField& phip =
+        patch().lookupPatchField<surfaceScalarField, scalar>(phiName_);
 
-    fixedValueFvPatchField<scalar>::updateCoeffs();
+    this->refValue() = sqrt(kp)/(Cmu25*mixingLength_);
+    this->valueFraction() = neg(phip);
+
+    inletOutletFvPatchScalarField::updateCoeffs();
 }
 
 
@@ -134,9 +153,10 @@ void turbulentMixingLengthFrequencyInletFvPatchScalarField::write
     Ostream& os
 ) const
 {
-    fvPatchField<scalar>::write(os);
+    fvPatchScalarField::write(os);
     os.writeKeyword("mixingLength")
         << mixingLength_ << token::END_STATEMENT << nl;
+    os.writeKeyword("phi") << phiName_ << token::END_STATEMENT << nl;
     os.writeKeyword("k") << kName_ << token::END_STATEMENT << nl;
     writeEntry("value", os);
 }

src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/turbulentMixingLengthFrequencyInlet/turbulentMixingLengthFrequencyInletFvPatchScalarField.H

@@ -25,19 +25,52 @@ License
 Class
     Foam::incompressible::turbulentMixingLengthFrequencyInletFvPatchScalarField
 
+Group
+    grpIcoRASBoundaryConditions grpInletBoundaryConditions
+
 Description
-    Calculate omega via the mixing length
+    This boundary condition provides a turbulence specific dissipation,
+    \f$\omega\f$ (omega) inlet condition based on a specified mixing length.
+    The patch values are calculated using:
+
+        \f[
+            \omega_p = \frac{k^{0.5}}{C_{\mu}^{0.25} L}
+        \f]
+   
+    where
+
+    \vartable
+        \omega_p | patch omega values
+        C_{\mu} | Model coefficient, set to 0.09
+        k       | turbulence kinetic energy
+        L       | length scale
+    \endvartable
+
+    \heading Patch usage
+
+    \table
+        Property     | Description             | Required    | Default value
+        mixingLength | Length scale [m]        | yes         |
+        phi          | flux field name         | no          | phi
+        k            | turbulence kinetic energy field name | no | k
+    \endtable
 
     Example of the boundary condition specification:
-    @verbatim
+    \verbatim
-        inlet
+    myPatch
-        {
+    {
-            type            turbulentMixingLengthFrequencyInlet;
+        type            turbulentMixingLengthFrequencyInlet;
-            mixingLength    0.005;         // 5 mm
+        mixingLength    0.005;
-            k               k;             // turbulent k field
+        value           uniform 200;   // placeholder
-            value           uniform 5;     // initial value
+    }
-        }
+    \endverbatim
-    @endverbatim
+
+Note
+    In the event of reverse flow, a zero-gradient condition is applied
+
+SeeAlso
+    Foam::inletOutletFvPatchField
+
 
 SourceFiles
     turbulentMixingLengthFrequencyInletFvPatchScalarField.C
@@ -47,7 +80,7 @@ SourceFiles
 #ifndef incompressibleturbulentMixingLengthFrequencyInletFvPatchScalarField_H
 #define incompressibleturbulentMixingLengthFrequencyInletFvPatchScalarField_H
 
-#include "fixedValueFvPatchFields.H"
+#include "inletOutletFvPatchFields.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -62,13 +95,16 @@ namespace incompressible
 
 class turbulentMixingLengthFrequencyInletFvPatchScalarField
 :
-    public fixedValueFvPatchScalarField
+    public inletOutletFvPatchScalarField
 {
     // Private data
 
         //- Turbulent length scale
         scalar mixingLength_;
 
+        //- Name of the flux field
+        word phiName_;
+
         //- Name of the turbulent kinetic energy field
         word kName_;