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/smagorinskyGuoZhaoDynamics.h | 75 +++++++++++++++++++++++++++++++
1 file changed, 75 insertions(+)
create mode 100644 src/dynamics/smagorinskyGuoZhaoDynamics.h
(limited to 'src/dynamics/smagorinskyGuoZhaoDynamics.h')
diff --git a/src/dynamics/smagorinskyGuoZhaoDynamics.h b/src/dynamics/smagorinskyGuoZhaoDynamics.h
new file mode 100644
index 0000000..224bf0b
--- /dev/null
+++ b/src/dynamics/smagorinskyGuoZhaoDynamics.h
@@ -0,0 +1,75 @@
+/* This file is part of the OpenLB library
+ *
+ * Copyright (C) 2016-2017 Davide Dapelo, Mathias J. Krause
+ * OpenLB 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
+ * Specific dynamics classes for Guo and Zhao (2002) porous model
+ * with a Smagorinsky LES turbulence model, with
+ * which a Cell object can be instantiated -- header file.
+ */
+#ifndef LB_SMAGO_GUOZHAO_DYNAMICS_H
+#define LB_SMAGO_GUOZHAO_DYNAMICS_H
+
+#include "dynamics/guoZhaoLatticeDescriptors.h"
+#include "core/util.h"
+#include "core/postProcessing.h"
+#include "core/latticeStatistics.h"
+
+namespace olb {
+
+/// Implementation of the BGK collision step with porous force according to
+/// Guo and Zhao (2012), described as an external force
+template
+class SmagorinskyGuoZhaoBGKdynamics : public GuoZhaoBGKdynamics {
+public:
+ /// Constructor.
+ //Passing default value for smagoConst_ because 2D boundary conditions accept only
+ //two-argument constructor for dynamics class.
+ SmagorinskyGuoZhaoBGKdynamics(T omega_, Momenta& momenta_, T smagoConst_ = 0.14,
+ T dx_ = 1, T dt_ = 1);
+ /// Collision step
+ virtual void collide(Cell& cell,
+ LatticeStatistics& statistics_);
+ /// Get local smagorinsky relaxation parameter of the dynamics
+ virtual T getSmagorinskyOmega(Cell& cell_);
+ /// Set local relaxation parameter of the dynamics
+ virtual void setOmega(T omega_);
+protected:
+ /// Computes a constant prefactor in order to speed up the computation
+ T computePreFactor(T omega_, T smagoConst_);
+ /// Computes the local smagorinsky relaxation parameter
+ T computeOmega(T omega0, T preFactor_, T rho,
+ T pi[util::TensorVal::n] );
+
+ /// effective collision time based upon Smagorisnky approach
+ T tau_eff;
+ /// Smagorinsky constant
+ T smagoConst;
+ /// Precomputed constant which speeeds up the computation
+ T preFactor;
+ T dx;
+ T dt;
+};
+
+}
+
+#endif
--
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