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src/TurbulenceModels/turbulenceModels/LES/LESdeltas/cubeRootVolDelta/cubeRootVolDelta.C

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+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2011-2013 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 "cubeRootVolDelta.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    defineTypeNameAndDebug(cubeRootVolDelta, 0);
+    addToRunTimeSelectionTable(LESdelta, cubeRootVolDelta, dictionary);
+}
+
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+void Foam::cubeRootVolDelta::calcDelta()
+{
+    label nD = mesh().nGeometricD();
+
+    if (nD == 3)
+    {
+        delta_.internalField() = deltaCoeff_*pow(mesh().V(), 1.0/3.0);
+    }
+    else if (nD == 2)
+    {
+        WarningIn("cubeRootVolDelta::calcDelta()")
+            << "Case is 2D, LES is not strictly applicable\n"
+            << endl;
+
+        const Vector<label>& directions = mesh().geometricD();
+
+        scalar thickness = 0.0;
+        for (direction dir=0; dir<directions.nComponents; dir++)
+        {
+            if (directions[dir] == -1)
+            {
+                thickness = mesh().bounds().span()[dir];
+                break;
+            }
+        }
+
+        delta_.internalField() = deltaCoeff_*sqrt(mesh().V()/thickness);
+    }
+    else
+    {
+        FatalErrorIn("cubeRootVolDelta::calcDelta()")
+            << "Case is not 3D or 2D, LES is not applicable"
+            << exit(FatalError);
+    }
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::cubeRootVolDelta::cubeRootVolDelta
+(
+    const word& name,
+    const fvMesh& mesh,
+    const dictionary& dict
+)
+:
+    LESdelta(name, mesh),
+    deltaCoeff_
+    (
+        dict.subDict(type() + "Coeffs").lookupOrDefault<scalar>("deltaCoeff", 1)
+    )
+{
+    calcDelta();
+}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+void Foam::cubeRootVolDelta::read(const dictionary& dict)
+{
+    dict.subDict(type() + "Coeffs").readIfPresent<scalar>
+    (
+        "deltaCoeff",
+        deltaCoeff_
+    );
+
+    calcDelta();
+}
+
+
+void Foam::cubeRootVolDelta::correct()
+{
+    if (mesh_.changing())
+    {
+        calcDelta();
+    }
+}
+
+
+// ************************************************************************* //