[freeflow] Add TurbulenceModel enum

dumux/freeflow/navierstokes/model.hh

@@ -101,6 +101,10 @@ struct NavierStokesModelTraits
     //! The model does not include a turbulence model
     static constexpr bool usesTurbulenceModel() { return false; }
 
+    //! return the type of turbulence model used
+    static constexpr auto turbulenceModel()
+    { return TurbulenceModel::none; }
+
     //! the indices
     using Indices = NavierStokesIndices<dim()>;
 };

dumux/freeflow/properties.hh

@@ -28,6 +28,7 @@
 #include <dumux/common/properties.hh>
 #include <dumux/common/properties/model.hh>
 #include <dumux/flux/fourierslaw.hh>
+#include "turbulencemodel.hh"
 
 namespace Dumux {
 namespace Properties {

dumux/freeflow/turbulencemodel.hh

+// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+// vi: set et ts=4 sw=4 sts=4:
+/*****************************************************************************
+ *   See the file COPYING for full copying permissions.                      *
+ *                                                                           *
+ *   This program 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.                                     *
+ *                                                                           *
+ *   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.   *
+ *****************************************************************************/
+/*!
+ * \file
+ * \ingroup FreeflowModels
+ * \brief The available free flow turbulence models in Dumux
+ */
+#ifndef DUMUX_FREEFLOW_TURBLENCEMODEL_HH
+#define DUMUX_FREEFLOW_TURBLENCEMODEL_HH
+
+namespace Dumux {
+
+    /*!
+     * \brief The available free flow turbulence models in Dumux
+     * \ingroup FreeflowModels
+     * \note Use none for plain (Navier-) Stokes models (DNS)
+     */
+    enum class TurbulenceModel
+    {
+        none, zeroeq, oneeq, kepsilon, lowrekepsilon, komega
+    };
+
+    constexpr unsigned int numTurbulenceEq(TurbulenceModel model)
+    {
+        if (model == TurbulenceModel::none || model == TurbulenceModel::zeroeq)
+            return 0;
+        else if (model == TurbulenceModel::oneeq)
+            return 1;
+        else
+            return 2;
+    }
+
+} // end namespace Dumux
+
+#endif