refineMesh: Added customizable direction fields to multiDirRefinement

Contribution provided by Bruno Santos
Resolves feature request http://www.openfoam.org/mantisbt/view.php?id=2004

tutorials/mesh/refineMesh/refineFieldDirs/calcRadiusField/Make/files

@@ -0,0 +1,3 @@
+calcRadiusField.C
+
+EXE = $(FOAM_USER_APPBIN)/calcRadiusField

tutorials/mesh/refineMesh/refineFieldDirs/calcRadiusField/Make/options

@@ -0,0 +1,5 @@
+EXE_INC = \
+    -I$(LIB_SRC)/finiteVolume/lnInclude
+
+EXE_LIBS = \
+    -lfiniteVolume

tutorials/mesh/refineMesh/refineFieldDirs/calcRadiusField/calcRadiusField.C

@@ -0,0 +1,164 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is derived from 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/>.
+
+Description
+    Write the volScalarField "radiusFieldXY" that has the distance to the
+    origin over X,Y.
+
+    And also write the direction fields based on the option "-calcDirections".
+    The resulting fields are:
+      - radialDirection
+      - angularDirection
+      - heightDirection
+
+    Derived from:
+      $FOAM_UTILITIES/postProcessing/miscellaneous/writeCellCentres
+
+\*---------------------------------------------------------------------------*/
+
+#include "argList.H"
+#include "timeSelector.H"
+#include "Time.H"
+#include "fvMesh.H"
+#include "vectorIOField.H"
+#include "volFields.H"
+
+using namespace Foam;
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    timeSelector::addOptions();
+    #include "addRegionOption.H"
+
+    argList::addBoolOption
+    (
+        "calcDirections",
+        "calculate the direction fields as well"
+    );
+
+    #include "setRootCase.H"
+    #include "createTime.H"
+
+    instantList timeDirs = timeSelector::select0(runTime, args);
+    const bool calcDirections = args.optionFound("calcDirections");
+
+    #include "createNamedMesh.H"
+
+    forAll(timeDirs, timeI)
+    {
+        runTime.setTime(timeDirs[timeI], timeI);
+
+        Info<< "Time = " << runTime.timeName() << endl;
+
+        // Check for new mesh
+        mesh.readUpdate();
+
+        Info<< "Writing radius field over X,Y in "
+            <<  runTime.timeName() << endl;
+
+        volScalarField radiusFieldXY
+        (
+            IOobject
+            (
+                "radiusFieldXY",
+                runTime.timeName(),
+                mesh,
+                IOobject::NO_READ,
+                IOobject::AUTO_WRITE
+            ),
+            sqrt
+            (
+                mesh.C().component(0)*mesh.C().component(0)
+              + mesh.C().component(1)*mesh.C().component(1)
+            )
+        );
+        radiusFieldXY.write();
+
+
+        if(calcDirections)
+        {
+
+            vectorIOField radialDirection
+            (
+                IOobject
+                (
+                    "radialDirection",
+                    runTime.timeName(),
+                    mesh,
+                    IOobject::NO_READ,
+                    IOobject::NO_WRITE
+                ),
+                mesh.C()/magSqr(mesh.C())
+            );
+            radialDirection.replace(vector::Z, scalar(0.0));
+            radialDirection /= sqrt(magSqr(radialDirection));
+            radialDirection.write();
+
+
+            const tensor transform2Tangencial
+            (
+                0, -1, 0,
+                1,  0, 0,
+                0,  0, 1
+            );
+            vectorIOField angularDirection
+            (
+                IOobject
+                (
+                    "angularDirection",
+                    runTime.timeName(),
+                    mesh,
+                    IOobject::NO_READ,
+                    IOobject::NO_WRITE
+                ),
+                transform2Tangencial & mesh.C()
+            );
+            angularDirection.replace(vector::Z, scalar(0.0));
+            angularDirection /= sqrt(magSqr(angularDirection));
+            angularDirection.write();
+
+            vectorIOField heightDirection
+            (
+                IOobject
+                (
+                    "heightDirection",
+                    runTime.timeName(),
+                    mesh,
+                    IOobject::NO_READ,
+                    IOobject::NO_WRITE
+                ),
+                radialDirection ^ angularDirection
+            );
+            heightDirection.write();
+        }
+    }
+
+    Info<< "\nEnd\n" << endl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //