From 94d3e79a8617f88dc0219cfdeedfa3147833719d Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Mon, 24 Jun 2019 14:43:36 +0200
Subject: Initialize at openlb-1-3

---
 src/dynamics/SmagorinskyPowerLawBGKdynamics.h | 73 +++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 src/dynamics/SmagorinskyPowerLawBGKdynamics.h

(limited to 'src/dynamics/SmagorinskyPowerLawBGKdynamics.h')

diff --git a/src/dynamics/SmagorinskyPowerLawBGKdynamics.h b/src/dynamics/SmagorinskyPowerLawBGKdynamics.h
new file mode 100644
index 0000000..e0dad17
--- /dev/null
+++ b/src/dynamics/SmagorinskyPowerLawBGKdynamics.h
@@ -0,0 +1,73 @@
+/*  This file is part of the OpenLB library
+ *
+ *  Copyright (C) 2012, 2015 Mathias J. Krause, Vojtech Cvrcek, Davide Dapelo
+ *  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.
+*/
+
+/** \file
+ * Porous-particle BGK Dynamics with adjusted omega
+ * and Smagorinsky turbulence model -- header file.
+ * Strain rate similar to "J.Boyd, J. Buick and S.Green: A second-order accurate lattice Boltzmann non-Newtonian flow model"
+ * Power Law similar to "Huidan Yu, Sharath S. Girimaji, Li-Shi Luo - DNS and LES of decaying isotropic turbulence with and without frame rotation using lattice Boltzmann method"
+ *
+ */
+#ifndef SMAGORINSKY_POWER_LAW_BGK_DYNAMICS_H
+#define SMAGORINSKY_POWER_LAW_BGK_DYNAMICS_H
+
+#include "core/cell.h"
+
+namespace olb {
+
+/// Implementation of the BGK collision step
+template<typename T, typename DESCRIPTOR>
+class SmagorinskyPowerLawBGKdynamics : public SmagorinskyBGKdynamics<T,DESCRIPTOR>, PowerLawDynamics<T,DESCRIPTOR> {
+public:
+  /// Constructor
+  /// m,n...parameter in the power law model
+  SmagorinskyPowerLawBGKdynamics(T omega, Momenta<T,DESCRIPTOR>& momenta, T m=0.1, T n=.5, T nuMin=T(2.9686e-3), T nuMax=T(3.1667), T smagoConst=T(0.14));
+  /// Collision step
+  virtual void collide(Cell<T,DESCRIPTOR>& cell, LatticeStatistics<T>& statistics) override;
+  /// Computes the local smagorinsky relaxation parameter with omega0 as an input
+  virtual T computeEffectiveOmega(Cell<T,DESCRIPTOR>& cell, T omega0);
+protected:
+  /// Computes squared norm of non-equilibrium part of 2nd momentum (for power-law)
+  virtual T PiNeqNormSqr(Cell<T,DESCRIPTOR>& cell ) override;
+};
+
+/// Implementation of the ForcedBGK collision step
+template<typename T, typename DESCRIPTOR>
+class SmagorinskyPowerLawForcedBGKdynamics : public SmagorinskyForcedBGKdynamics<T,DESCRIPTOR>, public PowerLawDynamics<T,DESCRIPTOR> {
+public:
+  /// Constructor
+  /// m,n...parameter in the power law model
+  SmagorinskyPowerLawForcedBGKdynamics(T omega, Momenta<T,DESCRIPTOR>& momenta, T m=0.1, T n=.5, T nuMin=T(2.9686e-3), T nuMax=T(3.1667), T smagoConst=T(0.14));
+  /// Collision step
+  virtual void collide(Cell<T,DESCRIPTOR>& cell, LatticeStatistics<T>& statistics) override;
+
+protected:
+  /// Computes the local smagorinsky relaxation parameter with omega0 as an input
+  virtual T computeEffectiveOmega(Cell<T,DESCRIPTOR>& cell, T omega0);
+  /// Computes squared norm of non-equilibrium part of 2nd momentum (for power-law)
+  virtual T PiNeqNormSqr(Cell<T,DESCRIPTOR>& cell ) override;
+};
+
+}
+
+#endif
-- 
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