functionObjects: Simplified and reorganised using the fieldExpression base-class

src/postProcessing/functionObjects/field/CourantNo/CourantNo.C

@@ -0,0 +1,158 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2013-2016 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 "CourantNo.H"
+#include "surfaceFields.H"
+#include "fvcSurfaceIntegrate.H"
+#include "zeroGradientFvPatchFields.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace functionObjects
+{
+    defineTypeNameAndDebug(CourantNo, 0);
+
+    addToRunTimeSelectionTable
+    (
+        functionObject,
+        CourantNo,
+        dictionary
+    );
+}
+}
+
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+Foam::tmp<Foam::volScalarField::Internal>
+Foam::functionObjects::CourantNo::byRho
+(
+    const tmp<volScalarField::Internal>& Co
+) const
+{
+    if (Co().dimensions() == dimDensity)
+    {
+        return Co/obr_.lookupObject<volScalarField>(rhoName_);
+    }
+    else
+    {
+        return Co;
+    }
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::functionObjects::CourantNo::CourantNo
+(
+    const word& name,
+    const Time& runTime,
+    const dictionary& dict
+)
+:
+    fvMeshFunctionObject(name, runTime, dict)
+{
+    read(dict);
+
+    volScalarField* CourantNoPtr
+    (
+        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(CourantNoPtr);
+}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::functionObjects::CourantNo::~CourantNo()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+bool Foam::functionObjects::CourantNo::read(const dictionary& dict)
+{
+    phiName_ = dict.lookupOrDefault<word>("phi", "phi");
+    rhoName_ = dict.lookupOrDefault<word>("rho", "rho");
+
+    return true;
+}
+
+
+bool Foam::functionObjects::CourantNo::execute(const bool postProcess)
+{
+    const surfaceScalarField& phi =
+        mesh_.lookupObject<surfaceScalarField>(phiName_);
+
+    volScalarField& Co = const_cast<volScalarField&>
+    (
+        mesh_.lookupObject<volScalarField>(type())
+    );
+
+    Co.ref() = byRho
+    (
+        (0.5*mesh_.time().deltaT())
+       *fvc::surfaceSum(mag(phi))()()
+       /mesh_.V()
+    );
+    Co.correctBoundaryConditions();
+
+    return true;
+}
+
+
+bool Foam::functionObjects::CourantNo::write(const bool postProcess)
+{
+    const volScalarField& CourantNo =
+        obr_.lookupObject<volScalarField>(type());
+
+    Info<< type() << " " << name() << " output:" << nl
+        << "    writing field " << CourantNo.name() << nl
+        << endl;
+
+    CourantNo.write();
+
+    return true;
+}
+
+
+// ************************************************************************* //

src/postProcessing/functionObjects/field/CourantNo/CourantNo.H

@@ -0,0 +1,131 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2013-2016 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::functionObjects::CourantNo
+
+Group
+    grpUtilitiesFunctionObjects
+
+Description
+    This function object calculates and outputs the Courant number as a
+    volScalarField.  The field is stored on the mesh database so that it can
+    be retrieved and used for other applications.
+
+SeeAlso
+    Foam::functionObjects::fvMeshFunctionObject
+
+SourceFiles
+    CourantNo.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef functionObjects_CourantNo_H
+#define functionObjects_CourantNo_H
+
+#include "fvMeshFunctionObject.H"
+#include "volFields.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace functionObjects
+{
+
+/*---------------------------------------------------------------------------*\
+                          Class CourantNo Declaration
+\*---------------------------------------------------------------------------*/
+
+class CourantNo
+:
+    public fvMeshFunctionObject
+{
+    // Private data
+
+        //- Name of flux field, default is "phi"
+        word phiName_;
+
+        //- Name of density field (optional)
+        word rhoName_;
+
+
+    // Private Member Functions
+
+        //- Divide Co by rho if required
+        tmp<volScalarField::Internal> byRho
+        (
+            const tmp<volScalarField::Internal>& Co
+        ) const;
+
+        //- Disallow default bitwise copy construct
+        CourantNo(const CourantNo&);
+
+        //- Disallow default bitwise assignment
+        void operator=(const CourantNo&);
+
+
+public:
+
+    //- Runtime type information
+    TypeName("CourantNo");
+
+
+    // Constructors
+
+        //- Construct from Time and dictionary
+        CourantNo
+        (
+            const word& name,
+            const Time&,
+            const dictionary&
+        );
+
+
+    //- Destructor
+    virtual ~CourantNo();
+
+
+    // Member Functions
+
+        //- Read the CourantNo data
+        virtual bool read(const dictionary&);
+
+        //- Execute, currently does nothing
+        virtual bool execute(const bool postProcess = false);
+
+        //- Calculate the CourantNo and write
+        virtual bool write(const bool postProcess = false);
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace functionObjects
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

src/postProcessing/functionObjects/field/Lambda2/Lambda2.C

@@ -0,0 +1,140 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2013-2016 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 "zeroGradientFvPatchFields.H"
+#include "fvcGrad.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace functionObjects
+{
+    defineTypeNameAndDebug(Lambda2, 0);
+
+    addToRunTimeSelectionTable
+    (
+        functionObject,
+        Lambda2,
+        dictionary
+    );
+}
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::functionObjects::Lambda2::Lambda2
+(
+    const word& name,
+    const Time& runTime,
+    const dictionary& dict
+)
+:
+    fvMeshFunctionObject(name, runTime, dict)
+{
+    read(dict);
+
+    volScalarField* Lambda2Ptr
+    (
+        new volScalarField
+        (
+            IOobject
+            (
+                type(),
+                mesh_.time().timeName(),
+                mesh_,
+                IOobject::NO_READ,
+                IOobject::NO_WRITE
+            ),
+            mesh_,
+            dimensionedScalar("0", dimless/sqr(dimTime), 0.0)
+        )
+    );
+
+    mesh_.objectRegistry::store(Lambda2Ptr);
+}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::functionObjects::Lambda2::~Lambda2()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+bool Foam::functionObjects::Lambda2::read(const dictionary& dict)
+{
+    UName_ = dict.lookupOrDefault<word>("U", "U");
+
+    return true;
+}
+
+
+bool Foam::functionObjects::Lambda2::execute(const bool postProcess)
+{
+    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())
+        );
+
+    Lambda2 = -eigenValues(SSplusWW)().component(vector::Y);
+
+    return true;
+}
+
+
+bool Foam::functionObjects::Lambda2::write(const bool postProcess)
+{
+    const volScalarField& Lambda2 =
+        obr_.lookupObject<volScalarField>(type());
+
+    Info<< type() << " " << name() << " output:" << nl
+        << "    writing field " << Lambda2.name() << nl
+        << endl;
+
+    Lambda2.write();
+
+    return true;
+}
+
+
+// ************************************************************************* //

src/postProcessing/functionObjects/field/Lambda2/Lambda2.H

@@ -0,0 +1,122 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2013-2016 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::functionObjects::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.
+
+SeeAlso
+    Foam::functionObjects::fvMeshFunctionObject
+
+SourceFiles
+    Lambda2.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef functionObjects_Lambda2_H
+#define functionObjects_Lambda2_H
+
+#include "fvMeshFunctionObject.H"
+#include "volFieldsFwd.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace functionObjects
+{
+
+/*---------------------------------------------------------------------------*\
+                          Class Lambda2 Declaration
+\*---------------------------------------------------------------------------*/
+
+class Lambda2
+:
+    public fvMeshFunctionObject
+{
+    // Private data
+
+        //- 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 from Time and dictionary
+        Lambda2
+        (
+            const word& name,
+            const Time& runTime,
+            const dictionary& dict
+        );
+
+
+    //- Destructor
+    virtual ~Lambda2();
+
+
+    // Member Functions
+
+        //- Read the Lambda2 data
+        virtual bool read(const dictionary&);
+
+        //- Calculate Lambda2
+        virtual bool execute(const bool postProcess = false);
+
+        //- Write Lambda2
+        virtual bool write(const bool postProcess = false);
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace functionObjects
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

src/postProcessing/functionObjects/field/Make/files

@@ -36,5 +36,9 @@ fieldExpression/fieldExpression.C
 div/div.C
 grad/grad.C
 mag/mag.C
+vorticity/vorticity.C
+Q/Q.C
+Lambda2/Lambda2.C
+CourantNo/CourantNo.C
 
 LIB = $(FOAM_LIBBIN)/libfieldFunctionObjects

src/postProcessing/functionObjects/field/Q/Q.C

@@ -0,0 +1,90 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2013-2016 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 "Q.H"
+#include "fvcGrad.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace functionObjects
+{
+    defineTypeNameAndDebug(Q, 0);
+
+    addToRunTimeSelectionTable
+    (
+        functionObject,
+        Q,
+        dictionary
+    );
+}
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::functionObjects::Q::Q
+(
+    const word& name,
+    const Time& runTime,
+    const dictionary& dict
+)
+:
+    fieldExpression(name, runTime, dict, "U", "Q")
+{}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::functionObjects::Q::~Q()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+bool Foam::functionObjects::Q::execute(const bool postProcess)
+{
+    if (foundField<volVectorField>(fieldName_))
+    {
+        const volVectorField& U = lookupField<volVectorField>(fieldName_);
+        const tmp<volTensorField> tgradU(fvc::grad(U));
+        const volTensorField& gradU = tgradU();
+
+        return store
+        (
+            resultName_,
+            0.5*(sqr(tr(gradU)) - tr(((gradU) & (gradU))))
+        );
+    }
+    else
+    {
+        return false;
+    }
+}
+
+
+// ************************************************************************* //

src/postProcessing/functionObjects/field/Q/Q.H

@@ -0,0 +1,105 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2013-2016 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::functionObjects::Q
+
+Group
+    grpUtilitiesFunctionObjects
+
+Description
+    This function object calculates and outputs the second invariant of the
+    velocity gradient tensor [1/s^2].
+
+    \f[
+        Q = 0.5(sqr(tr(\nabla U)) - tr(((\nabla U) \cdot (\nabla U))))
+    \f]
+
+SeeAlso
+    Foam::functionObjects::fieldExpression
+    Foam::functionObjects::fvMeshFunctionObject
+
+SourceFiles
+    Q.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef functionObjects_Q_H
+#define functionObjects_Q_H
+
+#include "fieldExpression.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace functionObjects
+{
+
+/*---------------------------------------------------------------------------*\
+                          Class Q Declaration
+\*---------------------------------------------------------------------------*/
+
+class Q
+:
+    public fieldExpression
+{
+
+public:
+
+    //- Runtime type information
+    TypeName("Q");
+
+
+    // Constructors
+
+        //- Construct from Time and dictionary
+        Q
+        (
+            const word& name,
+            const Time& runTime,
+            const dictionary& dict
+        );
+
+
+    //- Destructor
+    virtual ~Q();
+
+
+    // Member Functions
+
+        //- Calculate the Q-field
+        virtual bool execute(const bool postProcess = false);
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace functionObjects
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

src/postProcessing/functionObjects/field/div/div.H

@@ -33,6 +33,7 @@ Description
     volScalarField.
 
 SeeAlso
+    Foam::functionObjects::fieldExpression
     Foam::functionObjects::fvMeshFunctionObject
 
 SourceFiles

src/postProcessing/functionObjects/field/fieldExpression/fieldExpression.C

@@ -42,10 +42,14 @@ Foam::functionObjects::fieldExpression::fieldExpression
 (
     const word& name,
     const Time& runTime,
-    const dictionary& dict
+    const dictionary& dict,
+    const word& fieldName,
+    const word& resultName
 )
 :
-    fvMeshFunctionObject(name, runTime, dict)
+    fvMeshFunctionObject(name, runTime, dict),
+    fieldName_(fieldName),
+    resultName_(resultName)
 {
     read(dict);
 }
@@ -61,7 +65,10 @@ Foam::functionObjects::fieldExpression::~fieldExpression()
 
 bool Foam::functionObjects::fieldExpression::read(const dictionary& dict)
 {
-    dict.lookup("field") >> fieldName_;
+    if (fieldName_ == word::null || dict.found("field"))
+    {
+        dict.lookup("field") >> fieldName_;
+    }
 
     if (dict.found("result"))
     {

src/postProcessing/functionObjects/field/fieldExpression/fieldExpression.H

@@ -93,7 +93,9 @@ public:
         (
             const word& name,
             const Time& runTime,
-            const dictionary& dict
+            const dictionary& dict,
+            const word& fieldName = word::null,
+            const word& resultName = word::null
         );
 
 

src/postProcessing/functionObjects/field/vorticity/vorticity.C

@@ -0,0 +1,134 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2014-2016 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 "vorticity.H"
+#include "volFields.H"
+#include "fvcCurl.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace functionObjects
+{
+    defineTypeNameAndDebug(vorticity, 0);
+
+    addToRunTimeSelectionTable
+    (
+        functionObject,
+        vorticity,
+        dictionary
+    );
+}
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::functionObjects::vorticity::vorticity
+(
+    const word& name,
+    const Time& runTime,
+    const dictionary& dict
+)
+:
+    fvMeshFunctionObject(name, runTime, dict),
+    outputName_(typeName)
+{
+    read(dict);
+
+    volVectorField* vorticityPtr
+    (
+        new volVectorField
+        (
+            IOobject
+            (
+                outputName_,
+                mesh_.time().timeName(),
+                mesh_,
+                IOobject::NO_READ,
+                IOobject::NO_WRITE
+            ),
+            mesh_,
+            dimensionedVector("0", dimless/dimTime, Zero)
+        )
+    );
+
+    mesh_.objectRegistry::store(vorticityPtr);
+}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::functionObjects::vorticity::~vorticity()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+bool Foam::functionObjects::vorticity::read(const dictionary& dict)
+{
+    UName_ = dict.lookupOrDefault<word>("U", "U");
+    if (UName_ != "U")
+    {
+        outputName_ = typeName + "(" + UName_ + ")";
+    }
+
+    return true;
+}
+
+
+bool Foam::functionObjects::vorticity::execute(const bool postProcess)
+{
+    const volVectorField& U = mesh_.lookupObject<volVectorField>(UName_);
+
+    volVectorField& vorticity = const_cast<volVectorField&>
+    (
+        mesh_.lookupObject<volVectorField>(outputName_)
+    );
+
+    vorticity = fvc::curl(U);
+
+    return true;
+}
+
+
+bool Foam::functionObjects::vorticity::write(const bool postProcess)
+{
+    const volVectorField& vorticity =
+        mesh_.lookupObject<volVectorField>(outputName_);
+
+    Info<< type() << " " << name() << " output:" << nl
+        << "    writing field " << vorticity.name() << nl
+        << endl;
+
+    vorticity.write();
+
+    return true;
+}
+
+
+// ************************************************************************* //

src/postProcessing/functionObjects/field/vorticity/vorticity.H

@@ -0,0 +1,123 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2014-2016 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::functionObjects::vorticity
+
+Group
+    grpUtilitiesFunctionObjects
+
+Description
+    This function object calculates the vorticity, the curl of the velocity.
+
+SeeAlso
+    Foam::functionObjects::fvMeshFunctionObject
+
+SourceFiles
+    vorticity.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef functionObjects_vorticity_H
+#define functionObjects_vorticity_H
+
+#include "fvMeshFunctionObject.H"
+#include "volFieldsFwd.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace functionObjects
+{
+
+/*---------------------------------------------------------------------------*\
+                          Class vorticity Declaration
+\*---------------------------------------------------------------------------*/
+
+class vorticity
+:
+    public fvMeshFunctionObject
+{
+    // Private data
+
+        //- Name of velocity field, default is "U"
+        word UName_;
+
+        //- Name of vorticity field
+        word outputName_;
+
+
+    // Private Member Functions
+
+        //- Disallow default bitwise copy construct
+        vorticity(const vorticity&);
+
+        //- Disallow default bitwise assignment
+        void operator=(const vorticity&);
+
+
+public:
+
+    //- Runtime type information
+    TypeName("vorticity");
+
+
+    // Constructors
+
+        //- Construct from Time and dictionary
+        vorticity
+        (
+            const word& name,
+            const Time& runTime,
+            const dictionary& dict
+        );
+
+
+    //- Destructor
+    virtual ~vorticity();
+
+
+    // Member Functions
+
+        //- Read the vorticity data
+        virtual bool read(const dictionary&);
+
+        //- Execute, currently does nothing
+        virtual bool execute(const bool postProcess = false);
+
+        //- Calculate the vorticity and write
+        virtual bool write(const bool postProcess = false);
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace functionObjects
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //