Initialize at openlb-1-3

1 files changed, 71 insertions, 0 deletions

diff --git a/src/particles/forces/stokesDragForce3D.h b/src/particles/forces/stokesDragForce3D.h
new file mode 100644
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+++ b/src/particles/forces/stokesDragForce3D.h
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+/*  This file is part of the OpenLB library
+ *
+ *  Copyright (C) 2016 Thomas Henn
+ *  E-mail contact: info@openlb.net
+ *  The most recent release of OpenLB can be downloaded at
+ *  <http://www.openlb.net/>
+ *
+ *  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, write to the Free
+ *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+ */
+
+/* Formulation of Stokes drag force (6 pi mu r_p v_rel)
+ * for actual time step with particle velocity of the last time step
+ * with implicit Euler method. For more information see
+ * paper of Thomas Henn: "Parallel dilute particulate flow simulations
+ * in the human nasal cavity", Computers & Fluids, 2016.
+ **/
+
+#ifndef STOKESDRAGFORCE_3D_H
+#define STOKESDRAGFORCE_3D_H
+
+#include "functors/lattice/superLatticeLocalF3D.h"
+#include "particles/particleSystem3D.h"
+#include "force3D.h"
+
+namespace olb {
+
+template<typename T, template<typename U> class PARTICLETYPE>
+class ParticleSystem3D;
+
+template<typename T, template<typename U> class PARTICLETYPE, typename DESCRIPTOR>
+class StokesDragForce3D : public Force3D<T, PARTICLETYPE> {
+  
+public:
+  /// Constructor, FluidVelocity, physicalTimeStep, physicalDynamicViscosity
+  StokesDragForce3D(SuperLatticeInterpPhysVelocity3D<T, DESCRIPTOR>& getVel, T dT, T mu);
+  /// Constructor using values from converter
+  StokesDragForce3D(SuperLatticeInterpPhysVelocity3D<T, DESCRIPTOR>& getVel, UnitConverter<T, DESCRIPTOR> const& converter);
+  /// Constructor using values from converter
+  StokesDragForce3D(SuperLatticeInterpPhysVelocity3D<T, DESCRIPTOR>& getVel, UnitConverter<T, DESCRIPTOR> const& converter, T scaleFactor);
+  /// Destructor
+  ~StokesDragForce3D() override {}
+  void applyForce(typename std::deque<PARTICLETYPE<T> >::iterator p,
+                  int pInt, ParticleSystem3D<T, PARTICLETYPE>& psSys) override;
+
+  /// Compute Force for subgrid scale particles
+  void computeForce(int pInt, ParticleSystem3D<T, PARTICLETYPE>* psSys,
+                    T force[3]);
+private:
+  SuperLatticeInterpPhysVelocity3D<T, DESCRIPTOR>& _getVel;
+  T _C1; // helperVariable
+  T _mu; // dynamic viscosity
+  T _dTinv; // inverse timestep
+  T _scaleFactor;
+};
+
+}
+
+#endif /* STOKESDRAGFORCE_3D_H */