ENH: Added new Lambda2 function object

src/postProcessing/functionObjects/utilities/Lambda2/IOLambda2.H

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2012 OpenFOAM Foundation
+     \\/     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 3 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, see <http://www.gnu.org/licenses/>.
+
+Typedef
+    Foam::IOLambda2
+
+Description
+    Instance of the generic IOOutputFilter for Lambda2.
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef IOLambda2_H
+#define IOLambda2_H
+
+#include "Lambda2.H"
+#include "IOOutputFilter.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    typedef IOOutputFilter<Lambda2> IOLambda2;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

src/postProcessing/functionObjects/utilities/Lambda2/Lambda2.C

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2012 OpenFOAM Foundation
+     \\/     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 3 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, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "Lambda2.H"
+#include "volFields.H"
+#include "dictionary.H"
+#include "zeroGradientFvPatchFields.H"
+#include "fvcGrad.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+defineTypeNameAndDebug(Foam::Lambda2, 0);
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::Lambda2::Lambda2
+(
+    const word& name,
+    const objectRegistry& obr,
+    const dictionary& dict,
+    const bool loadFromFiles
+)
+:
+    name_(name),
+    obr_(obr),
+    active_(true),
+    UName_("U")
+{
+    // Check if the available mesh is an fvMesh, otherwise deactivate
+    if (!isA<fvMesh>(obr_))
+    {
+        active_ = false;
+        WarningIn
+        (
+            "Lambda2::Lambda2"
+            "("
+                "const word&, "
+                "const objectRegistry&, "
+                "const dictionary&, "
+                "const bool"
+            ")"
+        )   << "No fvMesh available, deactivating." << nl
+            << endl;
+    }
+
+    read(dict);
+
+    if (active_)
+    {
+        const fvMesh& mesh = refCast<const fvMesh>(obr_);
+
+        volScalarField* Lambda2Ptr
+        (
+            new volScalarField
+            (
+                IOobject
+                (
+                    type(),
+                    mesh.time().timeName(),
+                    mesh,
+                    IOobject::NO_READ,
+                    IOobject::NO_WRITE
+                ),
+                mesh,
+                dimensionedScalar("0", dimless, 0.0),
+                zeroGradientFvPatchScalarField::typeName
+            )
+        );
+
+        mesh.objectRegistry::store(Lambda2Ptr);
+    }
+}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::Lambda2::~Lambda2()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+void Foam::Lambda2::read(const dictionary& dict)
+{
+    if (active_)
+    {
+        UName_ = dict.lookupOrDefault<word>("UName", "U");
+    }
+}
+
+
+void Foam::Lambda2::execute()
+{
+    // Do nothing - only valid on write
+}
+
+
+void Foam::Lambda2::end()
+{
+    // Do nothing - only valid on write
+}
+
+
+void Foam::Lambda2::write()
+{
+    if (active_)
+    {
+        const fvMesh& mesh = refCast<const fvMesh>(obr_);
+
+        const volVectorField& U =
+            mesh.lookupObject<volVectorField>(UName_);
+
+        const volTensorField gradU(fvc::grad(U));
+
+        const volTensorField SSplusWW
+        (
+            (symm(gradU) & symm(gradU))
+          + (skew(gradU) & skew(gradU))
+        );
+
+        volScalarField& Lambda2 =
+            const_cast<volScalarField&>
+            (
+                mesh.lookupObject<volScalarField>(type())
+            );
+
+        scalarField& iField = Lambda2.internalField();
+
+        iField = -eigenValues(SSplusWW)().component(vector::Y);
+
+        Lambda2.correctBoundaryConditions();
+
+        Lambda2.write();
+
+        Info<< type() << " output:" << nl
+            << "    writing " << Lambda2.name() << " field" << nl << endl;
+    }
+}
+
+
+// ************************************************************************* //

src/postProcessing/functionObjects/utilities/Lambda2/Lambda2.H

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2012 OpenFOAM Foundation
+     \\/     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 3 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, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::Lambda2
+
+Group
+    grpUtilitiesFunctionObjects
+
+Description
+    This function object calculates and outputs the second largest eigenvalue
+    of the sum of the square of the symmetrical and anti-symmetrical parts of
+    the velocity gradient tensor.
+
+SourceFiles
+    Lambda2.C
+    IOLambda2.H
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef Lambda2_H
+#define Lambda2_H
+
+#include "volFieldsFwd.H"
+#include "surfaceFieldsFwd.H"
+#include "pointFieldFwd.H"
+#include "OFstream.H"
+#include "Switch.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// Forward declaration of classes
+class objectRegistry;
+class dictionary;
+class mapPolyMesh;
+
+/*---------------------------------------------------------------------------*\
+                          Class Lambda2 Declaration
+\*---------------------------------------------------------------------------*/
+
+class Lambda2
+{
+    // Private data
+
+        //- Name of this set of Lambda2 objects
+        word name_;
+
+        //- Reference to the database
+        const objectRegistry& obr_;
+
+        //- On/off switch
+        bool active_;
+
+        //- Name of velocity field, default is "U"
+        word UName_;
+
+
+    // Private Member Functions
+
+        //- Disallow default bitwise copy construct
+        Lambda2(const Lambda2&);
+
+        //- Disallow default bitwise assignment
+        void operator=(const Lambda2&);
+
+
+public:
+
+    //- Runtime type information
+    TypeName("Lambda2");
+
+
+    // Constructors
+
+        //- Construct for given objectRegistry and dictionary.
+        //  Allow the possibility to load fields from files
+        Lambda2
+        (
+            const word& name,
+            const objectRegistry&,
+            const dictionary&,
+            const bool loadFromFiles = false
+        );
+
+
+    //- Destructor
+    virtual ~Lambda2();
+
+
+    // Member Functions
+
+        //- Return name of the set of Lambda2
+        virtual const word& name() const
+        {
+            return name_;
+        }
+
+        //- Read the Lambda2 data
+        virtual void read(const dictionary&);
+
+        //- Execute, currently does nothing
+        virtual void execute();
+
+        //- Execute at the final time-loop, currently does nothing
+        virtual void end();
+
+        //- Calculate the Lambda2 and write
+        virtual void write();
+
+        //- Update for changes of mesh
+        virtual void updateMesh(const mapPolyMesh&)
+        {}
+
+        //- Update for changes of mesh
+        virtual void movePoints(const pointField&)
+        {}
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

src/postProcessing/functionObjects/utilities/Lambda2/Lambda2FunctionObject.C

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2012 OpenFOAM Foundation
+     \\/     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 3 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, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "Lambda2FunctionObject.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    defineNamedTemplateTypeNameAndDebug(Lambda2FunctionObject, 0);
+
+    addToRunTimeSelectionTable
+    (
+        functionObject,
+        Lambda2FunctionObject,
+        dictionary
+    );
+}
+
+// ************************************************************************* //

src/postProcessing/functionObjects/utilities/Lambda2/Lambda2FunctionObject.H

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2012 OpenFOAM Foundation
+     \\/     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 3 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, see <http://www.gnu.org/licenses/>.
+
+Typedef
+    Foam::Lambda2FunctionObject
+
+Description
+    FunctionObject wrapper around Lambda2 to allow it to be created
+    via the functions entry within controlDict.
+
+SourceFiles
+    Lambda2FunctionObject.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef Lambda2FunctionObject_H
+#define Lambda2FunctionObject_H
+
+#include "Lambda2.H"
+#include "OutputFilterFunctionObject.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    typedef OutputFilterFunctionObject<Lambda2> Lambda2FunctionObject;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

src/postProcessing/functionObjects/utilities/Make/files

@@ -3,6 +3,9 @@ codedFunctionObject/codedFunctionObject.C
 CourantNo/CourantNo.C
 CourantNo/CourantNoFunctionObject.C
 
+Lambda2/Lambda2.C
+Lambda2/Lambda2FunctionObject.C
+
 DESModelRegions/DESModelRegions.C
 DESModelRegions/DESModelRegionsFunctionObject.C