Initialize at openlb-1-3

4 files changed, 456 insertions, 0 deletions

diff --git a/examples/laminar/bstep2d/Makefile b/examples/laminar/bstep2d/Makefile
new file mode 100644
index 0000000..a953954
--- /dev/null
+++ b/examples/laminar/bstep2d/Makefile
@@ -0,0 +1,105 @@
+#  This file is part of the OpenLB library
+#
+#  Copyright (C) 2007 Mathias Krause
+#  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.
+
+###########################################################################
+## definitions
+
+include definitions.mk
+
+include $(ROOT)/global.mk
+
+OBJECTS    := $(foreach file, $(SRC), $(PWD)/$(file:.cpp=.o))
+DEPS       := $(foreach file, $(SRC), $(PWD)/$(file:.cpp=.d))
+
+###########################################################################
+## all
+
+all : depend compile link
+
+
+###########################################################################
+## dependencies
+
+depend : $(DEPS)
+
+$(PWD)/%.d : %.cpp
+	@echo Create dependencies for $<
+	@$(SHELL) -ec '$(CXX) -M $(CXXFLAGS) $(IDIR) $< \
+                       | sed -e "s!$*\.o!$(PWD)\/$*\.o!1" > .tmpfile; \
+                       cp -f .tmpfile $@;'
+
+###########################################################################
+## compile
+
+compile : $(OBJECTS)
+
+$(PWD)/%.o: %.cpp
+	@echo Compile $<
+	$(CXX) $(CXXFLAGS) $(IDIR) -c $< -o $@
+
+###########################################################################
+## clean
+
+clean : cleanrub cleanobj cleandep
+
+cleanrub:
+	@echo Clean rubbish files
+	@rm -f *~ core .tmpfile tmp/*.* $(OUTPUT)
+	@rm -f tmp/vtkData/*.* tmp/vtkData/data/*.* tmp/imageData/*.* tmp/gnuplotData/*.* tmp/gnuplotData/data/*.*
+
+cleanobj:
+	@echo Clean object files
+	@rm -f $(OBJECTS)
+
+cleandep:
+	@echo Clean dependencies files
+	@rm -f $(DEPS)
+
+cleanbuild:
+	@cd $(ROOT); \
+	 $(MAKE) cleanlib;
+
+###########################################################################
+## update lib
+
+$(ROOT)/$(LIBDIR)/lib$(LIB).a :
+	@cd $(ROOT); \
+	$(MAKE) all
+
+###########################################################################
+## link
+
+link: $(OUTPUT)
+
+$(OUTPUT): $(OBJECTS) $(ROOT)/$(LIBDIR)/lib$(LIB).a
+	@echo Link $@
+	$(CXX) $(foreach file, $(SRC), $(file:.cpp=.o)) $(LDFLAGS) -L$(ROOT)/$(LIBDIR) -l$(LIB) -lz -o $@
+
+###########################################################################
+## include dependencies
+
+ifneq "$(strip $(wildcard *.d))" ""
+   include $(foreach file,$(DEPS),$(file))
+endif
+
+###########################################################################
+###########################################################################
diff --git a/examples/laminar/bstep2d/bstep2d.cpp b/examples/laminar/bstep2d/bstep2d.cpp
new file mode 100644
index 0000000..89bbcba
--- /dev/null
+++ b/examples/laminar/bstep2d/bstep2d.cpp
@@ -0,0 +1,292 @@
+/*  Lattice Boltzmann sample, written in C++, using the OpenLB
+ *  library
+ *
+ *  Copyright (C) 2006, 2007, 2012 Jonas Latt, Mathias J. Krause
+ *  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.
+ */
+
+/* bstep2d.cpp:
+ * The implementation of a backward facing step. It is furthermore
+ * shown how to use checkpointing to save the state of the
+ * simulation regularly.
+ */
+
+
+#include "olb2D.h"
+#ifndef OLB_PRECOMPILED // Unless precompiled version is used,
+#include "olb2D.hh"   // include full template code
+#endif
+
+#include <cmath>
+#include <iostream>
+#include <fstream>
+
+using namespace olb;
+using namespace olb::descriptors;
+
+
+typedef double T;
+#define DESCRIPTOR D2Q9<>
+
+
+// Parameters for the simulation setup
+const T lx1   = 5.0;    // length of step in meter
+const T ly1   = 0.75;   // height of step in meter
+const T lx0   = 20.0;   // length of channel in meter
+const T ly0   = 1.5;    // height of channel in meter
+const int N = 60;        // resolution of the model
+const int M = 50;        // resolution of the model
+const T maxPhysT = 40.; // max. simulation time in s, SI unit
+
+
+// Stores geometry information in form of material numbers
+SuperGeometry2D<T> prepareGeometry( UnitConverter<T,DESCRIPTOR> const& converter )
+{
+  OstreamManager clout( std::cout,"prepareGeometry" );
+  clout << "Prepare Geometry ..." << std::endl;
+
+  // set number of cuboids/blocks
+#ifdef PARALLEL_MODE_MPI
+  const int noOfCuboids = singleton::mpi().getSize();
+#else
+  const int noOfCuboids = 6;
+#endif
+
+  // setup channel
+  Vector<T,2> extendChannel( lx0,ly0 );
+  Vector<T,2> originChannel( 0, 0 );
+  std::shared_ptr<IndicatorF2D<T>> channel = std::make_shared<IndicatorCuboid2D<T>>( extendChannel, originChannel );
+
+  // setup step
+  Vector<T,2> extendStep( lx1,ly1 );
+  Vector<T,2> originStep( 0, 0 );
+  std::shared_ptr<IndicatorF2D<T>> step = std::make_shared<IndicatorCuboid2D<T>>( extendStep, originStep );
+
+  CuboidGeometry2D<T>* cuboidGeometry = new CuboidGeometry2D<T>( *(channel-step), converter.getConversionFactorLength(), noOfCuboids );
+  HeuristicLoadBalancer<T>* loadBalancer = new HeuristicLoadBalancer<T>( *cuboidGeometry );
+  // Instantiation of a superGeometry
+  SuperGeometry2D<T> superGeometry( *cuboidGeometry, *loadBalancer, 2 );
+
+  // material numbers from zero to 2 inside geometry defined by indicator
+  superGeometry.rename( 0,2 );
+  superGeometry.rename( 2,1,1,1 );
+
+  Vector<T,2> extendBC( 0,ly0 );
+  Vector<T,2> originBC;
+  IndicatorCuboid2D<T> inflow( extendBC, originBC );
+  // Set material number for inflow
+  superGeometry.rename( 2,3,1,inflow );
+  originBC[0] = lx0;
+  IndicatorCuboid2D<T> outflow( extendBC, originBC );
+  // Set material number for outflow
+  superGeometry.rename( 2,4,1,outflow );
+  // Removes all not needed boundary voxels outside the surface
+  superGeometry.clean();
+  // Removes all not needed boundary voxels inside the surface
+  superGeometry.innerClean();
+  superGeometry.checkForErrors();
+  superGeometry.getStatistics().print();
+  clout << "Prepare Geometry ... OK" << std::endl;
+  return superGeometry;
+}
+
+// Set up the geometry of the simulation
+void prepareLattice( UnitConverter<T,DESCRIPTOR> const& converter,
+                     SuperLattice2D<T,DESCRIPTOR>& sLattice,
+                     Dynamics<T,DESCRIPTOR>& bulkDynamics,
+                     sOnLatticeBoundaryCondition2D<T,DESCRIPTOR>& bc,
+                     SuperGeometry2D<T>& superGeometry ) {
+  OstreamManager clout( std::cout,"prepareLattice" );
+  clout << "Prepare Lattice ..." << std::endl;
+
+  auto bulkIndicator = superGeometry.getMaterialIndicator({1, 3, 4});
+
+  // Material=0 -->do nothing
+  sLattice.defineDynamics( superGeometry, 0, &instances::getNoDynamics<T,DESCRIPTOR>() );
+  // Material=1 -->bulk dynamics
+  // Material=3 -->bulk dynamics (inflow)
+  // Material=4 -->bulk dynamics (outflow)
+  sLattice.defineDynamics( bulkIndicator, &bulkDynamics );
+  // Material=2 -->bounce back
+  sLattice.defineDynamics( superGeometry, 2, &instances::getBounceBack<T,DESCRIPTOR>() );
+
+  // Setting of the boundary conditions
+  bc.addVelocityBoundary( superGeometry, 3, converter.getLatticeRelaxationFrequency() );
+  bc.addPressureBoundary( superGeometry, 4, converter.getLatticeRelaxationFrequency() );
+
+  // Initial conditions
+  AnalyticalConst2D<T,T> ux( 0. );
+  AnalyticalConst2D<T,T> uy( 0. );
+  AnalyticalConst2D<T,T> rho( 1. );
+  AnalyticalComposed2D<T,T> u( ux,uy );
+
+  //Initialize all values of distribution functions to their local equilibrium
+  sLattice.defineRhoU( bulkIndicator, rho, u );
+  sLattice.iniEquilibrium( bulkIndicator, rho, u );
+
+  // Make the lattice ready for simulation
+  sLattice.initialize();
+
+  clout << "Prepare Lattice ... OK" << std::endl;
+}
+
+// Generates a slowly increasing inflow for the first iTMaxStart timesteps
+void setBoundaryValues( UnitConverter<T,DESCRIPTOR> const& converter,
+                        SuperLattice2D<T,DESCRIPTOR>& sLattice, int iT,
+                        SuperGeometry2D<T>& superGeometry ) {
+  OstreamManager clout( std::cout,"setBoundaryValues" );
+
+  // time for smooth start-up
+  int iTmaxStart = converter.getLatticeTime( maxPhysT*0.2 );
+  int iTupdate = 5;
+
+  if ( iT%iTupdate == 0 && iT<= iTmaxStart ) {
+    // Smooth start curve, sinus
+    // SinusStartScale<T,int> StartScale(iTmaxStart, T(1));
+    // Smooth start curve, polynomial
+    PolynomialStartScale<T,int> StartScale( iTmaxStart, T( 1 ) );
+    // Creates and sets the Poiseuille inflow profile using functors
+    int iTvec[1] = {iT};
+    T frac[1] = {};
+    StartScale( frac,iTvec );
+    T maxVelocity = converter.getCharLatticeVelocity()*3./2.*frac[0];
+    T distance2Wall = converter.getConversionFactorLength()/2.;
+    Poiseuille2D<T> poiseuilleU( superGeometry, 3, maxVelocity, distance2Wall );
+    // define lattice speed on inflow
+    sLattice.defineU( superGeometry, 3, poiseuilleU );
+  }
+}
+
+// write data to termimal and file system
+void getResults( SuperLattice2D<T,DESCRIPTOR>& sLattice,
+                 UnitConverter<T,DESCRIPTOR> const& converter, int iT,
+                 SuperGeometry2D<T>& superGeometry, Timer<T>& timer,
+                 SuperPlaneIntegralFluxVelocity2D<T>& velocityFlux,
+                 SuperPlaneIntegralFluxPressure2D<T>& pressureFlux ) {
+  OstreamManager clout( std::cout,"getResults" );
+  SuperVTMwriter2D<T> vtmWriter( "bstep2d" );
+
+  if ( iT==0 ) {
+    // Writes geometry, cuboid no. and rank no. to file system
+    SuperLatticeGeometry2D<T,DESCRIPTOR> geometry( sLattice, superGeometry );
+    SuperLatticeCuboid2D<T,DESCRIPTOR> cuboid( sLattice );
+    SuperLatticeRank2D<T,DESCRIPTOR> rank( sLattice );
+    vtmWriter.write( geometry );
+    vtmWriter.write( cuboid );
+    vtmWriter.write( rank );
+    vtmWriter.createMasterFile();
+  }
+
+  // Writes every 0.2  seconds
+  if ( iT%converter.getLatticeTime( 0.2 )==0 ) {
+    SuperLatticePhysVelocity2D<T,DESCRIPTOR> velocity( sLattice, converter );
+    SuperLatticePhysPressure2D<T,DESCRIPTOR> pressure( sLattice, converter );
+    vtmWriter.addFunctor( velocity );
+    vtmWriter.addFunctor( pressure );
+    // write vtk to file system
+    vtmWriter.write( iT );
+    sLattice.communicate();
+    SuperEuklidNorm2D<T,DESCRIPTOR> normVel( velocity );
+    BlockReduction2D2D<T> planeReduction( normVel, 600, BlockDataSyncMode::ReduceOnly );
+    // write output as JPEG
+    heatmap::write(planeReduction, iT);
+  }
+
+  // Writes every 0.1 simulated
+  if ( iT%converter.getLatticeTime( 0.1 )==0 ) {
+    velocityFlux.print();
+    pressureFlux.print();
+
+    // write to terminal
+    timer.update( iT );
+    timer.printStep();
+    // Lattice statistics console output
+    sLattice.getStatistics().print( iT,converter.getPhysTime( iT ) );
+  }
+
+  // Saves lattice data
+  if ( iT%converter.getLatticeTime( 1 )==0 && iT>0 ) {
+    clout << "Checkpointing the system at t=" << iT << std::endl;
+    sLattice.save( "bstep2d.checkpoint" );
+    // The data can be reloaded using
+    //     sLattice.load("bstep2d.checkpoint");
+  }
+}
+
+
+int main( int argc, char* argv[] ) {
+  // === 1st Step: Initialization ===
+  olbInit( &argc, &argv );
+  singleton::directories().setOutputDir( "./tmp/" );  // set output directory
+  OstreamManager clout( std::cout, "main" );
+
+  UnitConverter<T,DESCRIPTOR> converter(
+    (T)   1./N,     // physDeltaX: spacing between two lattice cells in __m__
+    (T)   1./(M*N), // physDeltaT: time step in __s__
+    (T)   1.,       // charPhysLength: reference length of simulation geometry
+    (T)   1.,       // charPhysVelocity: maximal/highest expected velocity during simulation in __m / s__
+    (T)   1./500.,  // physViscosity: physical kinematic viscosity in __m^2 / s__
+    (T)   1.        // physDensity: physical density in __kg / m^3__
+  );
+  // Prints the converter log as console output
+  converter.print();
+  // Writes the converter log in a file
+  converter.write("bstep2d");
+
+  // === 2nd Step: Prepare Geometry ===
+  // Instantiation of a superGeometry
+  SuperGeometry2D<T> superGeometry( prepareGeometry(converter) );
+
+  // === 3rd Step: Prepare Lattice ===
+  SuperLattice2D<T,DESCRIPTOR> sLattice( superGeometry );
+
+  BGKdynamics<T,DESCRIPTOR> bulkDynamics (
+    converter.getLatticeRelaxationFrequency(),
+    instances::getBulkMomenta<T,DESCRIPTOR>()
+  );
+
+  // choose between local and non-local boundary condition
+  sOnLatticeBoundaryCondition2D<T,DESCRIPTOR> sBoundaryCondition( sLattice );
+  // createInterpBoundaryCondition2D<T,DESCRIPTOR>(sBoundaryCondition);
+  createLocalBoundaryCondition2D<T,DESCRIPTOR>( sBoundaryCondition );
+
+  prepareLattice( converter, sLattice, bulkDynamics, sBoundaryCondition, superGeometry );
+
+  // instantiate reusable functors
+  SuperPlaneIntegralFluxVelocity2D<T> velocityFlux( sLattice, converter, superGeometry, {19.,1.}, {0.,1.} );
+  SuperPlaneIntegralFluxPressure2D<T> pressureFlux( sLattice, converter, superGeometry, {19.,1.}, {0.,1.} );
+
+  // === 4th Step: Main Loop with Timer ===
+  clout << "starting simulation..." << std::endl;
+  Timer<T> timer( converter.getLatticeTime( maxPhysT ), superGeometry.getStatistics().getNvoxel() );
+  timer.start();
+
+  for ( int iT = 0; iT < converter.getLatticeTime( maxPhysT ); ++iT ) {
+    // === 5th Step: Definition of Initial and Boundary Conditions ===
+    setBoundaryValues( converter, sLattice, iT, superGeometry );
+    // === 6th Step: Collide and Stream Execution ===
+    sLattice.collideAndStream();
+    // === 7th Step: Computation and Output of the Results ===
+    getResults( sLattice, converter, iT, superGeometry, timer, velocityFlux, pressureFlux );
+  }
+
+  timer.stop();
+  timer.printSummary();
+}
diff --git a/examples/laminar/bstep2d/definitions.mk b/examples/laminar/bstep2d/definitions.mk
new file mode 100644
index 0000000..72cc171
--- /dev/null
+++ b/examples/laminar/bstep2d/definitions.mk
@@ -0,0 +1,30 @@
+#  This file is part of the OpenLB library
+#
+#  Copyright (C) 2007 Mathias Krause
+#  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.
+
+
+###########################################################################
+###########################################################################
+## DEFINITIONS TO BE CHANGED
+
+ROOT            := ../../..
+SRC             := bstep2d.cpp
+OUTPUT          := bstep2d
diff --git a/examples/laminar/bstep2d/module.mk b/examples/laminar/bstep2d/module.mk
new file mode 100644
index 0000000..1190482
--- /dev/null
+++ b/examples/laminar/bstep2d/module.mk
@@ -0,0 +1,29 @@
+#  This file is part of the OpenLB library
+#
+#  Copyright (C) 2017 Markus Mohrhard
+#  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.
+
+current_dir := $(dir $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST)))
+
+include global.mk
+include rules.mk
+include $(addsuffix definitions.mk, $(current_dir))
+
+$(eval $(call sample,$(current_dir)$(OUTPUT),$(addprefix $(current_dir), $(SRC))))