diff --git a/src/turbulenceModels/incompressible/RAS/Make/files b/src/turbulenceModels/incompressible/RAS/Make/files
index 7ddd1d4e3b24fa0d6156d5f6fed061beebf8ace1..f6107822dfbc1cee80f472537f5ef4448d187c6d 100644
--- a/src/turbulenceModels/incompressible/RAS/Make/files
+++ b/src/turbulenceModels/incompressible/RAS/Make/files
@@ -43,6 +43,7 @@ $(kqRWallFunctions)/kqRWallFunction/kqRWallFunctionFvPatchFields.C
derivedFvPatchFields/turbulentHeatFluxTemperature/turbulentHeatFluxTemperatureFvPatchScalarField.C
derivedFvPatchFields/turbulentMixingLengthDissipationRateInlet/turbulentMixingLengthDissipationRateInletFvPatchScalarField.C
derivedFvPatchFields/turbulentMixingLengthFrequencyInlet/turbulentMixingLengthFrequencyInletFvPatchScalarField.C
+derivedFvPatchFields/fixedShearStress/fixedShearStressFvPatchVectorField.C
backwardsCompatibility/wallFunctions/backwardsCompatibilityWallFunctions.C
diff --git a/src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/fixedShearStress/fixedShearStressFvPatchVectorField.C b/src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/fixedShearStress/fixedShearStressFvPatchVectorField.C
new file mode 100644
index 0000000000000000000000000000000000000000..0397d52fae48f2550a1dde5e662fa914e4b4ac2e
--- /dev/null
+++ b/src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/fixedShearStress/fixedShearStressFvPatchVectorField.C
@@ -0,0 +1,164 @@
+/*---------------------------------------------------------------------------*\
+ ========= |
+ \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
+ \\ / O peration |
+ \\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
+ \\/ M anipulation |
+-------------------------------------------------------------------------------
+License
+ This file is part of OpenFOAM.
+
+ OpenFOAM is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 2 of the License, or (at your
+ option) any later version.
+
+ OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with OpenFOAM; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+\*---------------------------------------------------------------------------*/
+
+#include "fixedShearStressFvPatchVectorField.H"
+#include "addToRunTimeSelectionTable.H"
+#include "fvPatchFieldMapper.H"
+#include "volFields.H"
+#include "RASModel.H"
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace incompressible
+{
+
+// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
+
+fixedShearStressFvPatchVectorField::
+fixedShearStressFvPatchVectorField
+(
+ const fvPatch& p,
+ const DimensionedField<vector, volMesh>& iF
+)
+:
+ fixedValueFvPatchVectorField(p, iF),
+ tau0_(vector::zero)
+{}
+
+
+fixedShearStressFvPatchVectorField::
+fixedShearStressFvPatchVectorField
+(
+ const fvPatch& p,
+ const DimensionedField<vector, volMesh>& iF,
+ const dictionary& dict
+)
+:
+ fixedValueFvPatchVectorField(p, iF),
+ tau0_(dict.lookupOrDefault<vector>("tau", vector::zero))
+{
+ fvPatchField<vector>::operator=(patchInternalField());
+}
+
+
+fixedShearStressFvPatchVectorField::
+fixedShearStressFvPatchVectorField
+(
+ const fixedShearStressFvPatchVectorField& ptf,
+ const fvPatch& p,
+ const DimensionedField<vector, volMesh>& iF,
+ const fvPatchFieldMapper& mapper
+)
+:
+ fixedValueFvPatchVectorField(ptf, p, iF, mapper),
+ tau0_(ptf.tau0_)
+{}
+
+
+fixedShearStressFvPatchVectorField::
+fixedShearStressFvPatchVectorField
+(
+ const fixedShearStressFvPatchVectorField& ptf
+)
+:
+ fixedValueFvPatchVectorField(ptf),
+ tau0_(ptf.tau0_)
+{}
+
+
+fixedShearStressFvPatchVectorField::
+fixedShearStressFvPatchVectorField
+(
+ const fixedShearStressFvPatchVectorField& ptf,
+ const DimensionedField<vector, volMesh>& iF
+)
+:
+ fixedValueFvPatchVectorField(ptf, iF),
+ tau0_(ptf.tau0_)
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
+
+void fixedShearStressFvPatchVectorField::updateCoeffs()
+{
+ if (updated())
+ {
+ return;
+ }
+
+ const label patchI = patch().index();
+
+ const RASModel& rasModel = db().lookupObject<RASModel>("RASProperties");
+
+ const fvPatchVectorField& Uw = rasModel.U().boundaryField()[patchI];
+
+ const vectorField Ui = Uw.patchInternalField();
+
+ vector tauHat = tau0_/mag(tau0_);
+
+ const scalarField& ry = patch().deltaCoeffs();
+
+ scalarField nuEffw = rasModel.nuEff()().boundaryField()[patchI];
+
+ vectorField UwUpdated =
+ tauHat*(tauHat & (tau0_*(1.0/(ry*nuEffw)) + Ui));
+
+ operator==(UwUpdated);
+
+ if (debug)
+ {
+ vectorField nHat = this->patch().nf();
+ volSymmTensorField Reff = rasModel.devReff();
+ Info << "tau : " << (nHat & Reff.boundaryField()[patchI])() << endl;
+ }
+
+ fixedValueFvPatchVectorField::updateCoeffs();
+}
+
+
+void fixedShearStressFvPatchVectorField::write(Ostream& os) const
+{
+ fixedValueFvPatchVectorField::write(os);
+ os.writeKeyword("tau") << tau0_ << token::END_STATEMENT << nl;
+ writeEntry("value", os);
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+makePatchTypeField
+(
+ fvPatchVectorField,
+ fixedShearStressFvPatchVectorField
+);
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace incompressible
+} // End namespace Foam
+// ************************************************************************* //
diff --git a/src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/fixedShearStress/fixedShearStressFvPatchVectorField.H b/src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/fixedShearStress/fixedShearStressFvPatchVectorField.H
new file mode 100644
index 0000000000000000000000000000000000000000..25e65f4bbf2c54efd64f3509be1ee3ffa0f9575a
--- /dev/null
+++ b/src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/fixedShearStress/fixedShearStressFvPatchVectorField.H
@@ -0,0 +1,147 @@
+/*---------------------------------------------------------------------------*\
+ ========= |
+ \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
+ \\ / O peration |
+ \\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
+ \\/ M anipulation |
+-------------------------------------------------------------------------------
+License
+ This file is part of OpenFOAM.
+
+ OpenFOAM is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 2 of the License, or (at your
+ option) any later version.
+
+ OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with OpenFOAM; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+Class
+ Foam::fixedShearStressFvPatchVectorField
+
+Description
+ Set a constant shear stress as tau0 = -nuEff dU/dn.
+
+SourceFiles
+ fixedShearStressFvPatchVectorField.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef fixedShearStressFvPatchVectorField_H
+#define fixedShearStressFvPatchVectorField_H
+
+#include "fvPatchFields.H"
+#include "fixedValueFvPatchFields.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace incompressible
+{
+/*---------------------------------------------------------------------------*\
+ Class fixedShearStressFvPatchVectorField Declaration
+\*---------------------------------------------------------------------------*/
+
+class fixedShearStressFvPatchVectorField
+:
+ public fixedValueFvPatchVectorField
+{
+ // Private data
+
+ //- Constant shear stress
+ vector tau0_;
+
+
+public:
+
+ //- Runtime type information
+ TypeName("fixedShearStress");
+
+
+ // Constructors
+
+ //- Construct from patch and internal field
+ fixedShearStressFvPatchVectorField
+ (
+ const fvPatch&,
+ const DimensionedField<vector, volMesh>&
+ );
+
+ //- Construct from patch, internal field and dictionary
+ fixedShearStressFvPatchVectorField
+ (
+ const fvPatch&,
+ const DimensionedField<vector, volMesh>&,
+ const dictionary&
+ );
+
+ //- Construct by mapping given
+ fixedShearStressFvPatchVectorField
+ (
+ const fixedShearStressFvPatchVectorField&,
+ const fvPatch&,
+ const DimensionedField<vector, volMesh>&,
+ const fvPatchFieldMapper&
+ );
+
+ //- Construct as copy
+ fixedShearStressFvPatchVectorField
+ (
+ const fixedShearStressFvPatchVectorField&
+ );
+
+ //- Construct and return a clone
+ virtual tmp<fvPatchVectorField> clone() const
+ {
+ return tmp<fvPatchVectorField>
+ (
+ new fixedShearStressFvPatchVectorField(*this)
+ );
+ }
+
+ //- Construct as copy setting internal field reference
+ fixedShearStressFvPatchVectorField
+ (
+ const fixedShearStressFvPatchVectorField&,
+ const DimensionedField<vector, volMesh>&
+ );
+
+ //- Construct and return a clone setting internal field reference
+ virtual tmp<fvPatchVectorField> clone
+ (
+ const DimensionedField<vector, volMesh>& iF
+ ) const
+ {
+ return tmp<fvPatchVectorField>
+ (
+ new fixedShearStressFvPatchVectorField(*this, iF)
+ );
+ }
+
+
+ // Member functions
+
+ //- Update the coefficients associated with the patch field
+ virtual void updateCoeffs();
+
+ //- Write
+ virtual void write(Ostream&) const;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace incompressible
+} // End namespace Foam
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //