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/rtlbmDynamics.h | 90 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 90 insertions(+)
create mode 100644 src/dynamics/rtlbmDynamics.h
(limited to 'src/dynamics/rtlbmDynamics.h')
diff --git a/src/dynamics/rtlbmDynamics.h b/src/dynamics/rtlbmDynamics.h
new file mode 100644
index 0000000..393057c
--- /dev/null
+++ b/src/dynamics/rtlbmDynamics.h
@@ -0,0 +1,90 @@
+/* This file is part of the OpenLB library
+ *
+ * Copyright (C) 2017 Albert Mink, Christopher McHardy
+ * E-mail contact: info@openlb.net
+ * The most recent release of OpenLB can be downloaded at
+ *
+ *
+ * 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
+ * A collection of radiative transport dynamics classes -- header file.
+ */
+
+#ifndef RTLBM_DYNAMICS_H
+#define RTLBM_DYNAMICS_H
+
+#include "dynamics/dynamics.h"
+
+namespace olb {
+
+
+
+/**
+ * Solves RTE according Christopher McHardy et al 2016.
+ * absorption and scattering coefficient:
+ * \f$ \sigma_a \f$ and \f$ \sigma_s \f$
+ *
+ * \param omega change into beta the extinction coefficient
+ * \param singleScatAlbedo is the single scattering albedo, given by \f$ \frac{\sigma_s}{\sigma_a + \sigma_s} \f$
+ */
+template
+class RTLBMdynamicsMcHardy : public BasicDynamics {
+public:
+ /// Constructor
+ RTLBMdynamicsMcHardy( Momenta& momenta, T latticeAbsorption, T latticeScattering, std::array, DESCRIPTOR::q>& anisoMatrix );
+ /// Compute equilibrium distribution function
+ T computeEquilibrium( int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr ) const override;
+ /// Collision step
+ void collide( Cell& cell, LatticeStatistics& statistics ) override;
+ /// Get local relaxation parameter of the dynamics
+ T getOmega() const override;
+ /// Set local relaxation parameter of the dynamics
+ void setOmega( T omega ) override;
+ T getSink() const;
+
+protected:
+ T _absorption;
+ T _scattering;
+ std::array, DESCRIPTOR::q>& _anisoMatrix;
+};
+
+template
+class RTLBMdynamicsMcHardyRK : public BasicDynamics {
+public:
+ /// Constructor
+ RTLBMdynamicsMcHardyRK( Momenta& momenta, T latticeAbsorption, T latticeScattering, std::array, DESCRIPTOR::q>& anisoMatrix );
+ /// Compute equilibrium distribution function
+ T computeEquilibrium( int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr ) const override;
+ /// Collision step
+ void collide( Cell& cell, LatticeStatistics& statistics ) override;
+ /// Get local relaxation parameter of the dynamics
+ T getOmega() const override;
+ /// Set local relaxation parameter of the dynamics
+ void setOmega( T omega ) override;
+private:
+ void computeEquilibriumAniso( Cell& cell, std::array& feq );
+ std::array doCollision( Cell& cell, std::array& feq );
+ T _absorption;
+ T _scattering;
+ std::array, DESCRIPTOR::q>& _anisoMatrix;
+};
+
+
+} // namespace olb
+
+#endif
--
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