ENH: fixedShearStress for incompressible flows

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
 

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
+// ************************************************************************* //

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
+
+// ************************************************************************* //