From b7518cbd6700a219f7d1be92b992f0c47fcf7a7b Mon Sep 17 00:00:00 2001 From: Adrian Kummerlaender Date: Mon, 17 Dec 2018 13:07:29 +0100 Subject: Simplify poiseuille2d as a starting point i.e. restrict to non-forced BGK dynamics and bounce back boundaries. Remove further distractions that will have to be modified anyway such as error norms. --- apps/adrian/poiseuille2d/Makefile | 105 +++++++++++++ apps/adrian/poiseuille2d/definitions.mk | 30 ++++ apps/adrian/poiseuille2d/module.mk | 29 ++++ apps/adrian/poiseuille2d/poiseuille2d.cpp | 243 ++++++++++++++++++++++++++++++ 4 files changed, 407 insertions(+) create mode 100644 apps/adrian/poiseuille2d/Makefile create mode 100644 apps/adrian/poiseuille2d/definitions.mk create mode 100644 apps/adrian/poiseuille2d/module.mk create mode 100644 apps/adrian/poiseuille2d/poiseuille2d.cpp (limited to 'apps') diff --git a/apps/adrian/poiseuille2d/Makefile b/apps/adrian/poiseuille2d/Makefile new file mode 100644 index 0000000..a953954 --- /dev/null +++ b/apps/adrian/poiseuille2d/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 +# +# +# 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/apps/adrian/poiseuille2d/definitions.mk b/apps/adrian/poiseuille2d/definitions.mk new file mode 100644 index 0000000..632d078 --- /dev/null +++ b/apps/adrian/poiseuille2d/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 +# +# +# 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 := poiseuille2d.cpp +OUTPUT := poiseuille2d diff --git a/apps/adrian/poiseuille2d/module.mk b/apps/adrian/poiseuille2d/module.mk new file mode 100644 index 0000000..1190482 --- /dev/null +++ b/apps/adrian/poiseuille2d/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 +# +# +# 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)))) diff --git a/apps/adrian/poiseuille2d/poiseuille2d.cpp b/apps/adrian/poiseuille2d/poiseuille2d.cpp new file mode 100644 index 0000000..2f582ab --- /dev/null +++ b/apps/adrian/poiseuille2d/poiseuille2d.cpp @@ -0,0 +1,243 @@ +/* Lattice Boltzmann sample, written in C++, using the OpenLB + * library + * + * Copyright (C) 2007, 2012 Jonas Latt, Mathias J. Krause + * Vojtech Cvrcek, Peter Weisbrod + * 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. + */ + +#include "olb2D.h" +#include "olb2D.hh" + +#include +#include +#include +#include +#include + +using namespace olb; +using namespace olb::descriptors; +using namespace olb::graphics; +using namespace std; + +typedef double T; + +#define DESCRIPTOR D2Q9Descriptor + +const T lx = 2.; // length of the channel +const T ly = 1.; // height of the channel +int N = 50; // resolution of the model +const T Re = 10.; // Reynolds number +const T maxPhysT = 20.; // max. simulation time in s, SI unit +const T physInterval = 0.25; // interval for the convergence check in s +const T residuum = 1e-5; // residuum for the convergence check +const T tuner = 0.99; // for partialSlip only: 0->bounceBack, 1->freeSlip + + +void prepareGeometry( UnitConverter const& converter, + SuperGeometry2D& superGeometry ) { + + OstreamManager clout( std::cout,"prepareGeometry" ); + clout << "Prepare Geometry ..." << std::endl; + + superGeometry.rename( 0,2 ); + + superGeometry.rename( 2,1,1,1 ); + + Vector extend; + Vector origin; + T physSpacing = converter.getPhysDeltaX(); + + // Set material number for inflow + extend[1] = ly; + extend[0] = physSpacing / 2; + origin[0] -= physSpacing / 4; + IndicatorCuboid2D inflow( extend, origin ); + superGeometry.rename( 2,3,1,inflow ); + + // Set material number for outflow + origin[0] = lx - physSpacing / 4; + IndicatorCuboid2D outflow( extend, origin ); + 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.print(); + + clout << "Prepare Geometry ... OK" << std::endl; +} + +void prepareLattice( UnitConverter const& converter, + SuperLattice2D& sLattice, + Dynamics& bulkDynamics, + sOnLatticeBoundaryCondition2D& sBoundaryCondition, + SuperGeometry2D& superGeometry ) { + + OstreamManager clout( std::cout,"prepareLattice" ); + clout << "Prepare Lattice ..." << std::endl; + + const T omega = converter.getLatticeRelaxationFrequency(); + + sLattice.defineDynamics( superGeometry, 0, &instances::getNoDynamics() ); + sLattice.defineDynamics( superGeometry, 1, &bulkDynamics ); + sLattice.defineDynamics( superGeometry, 2, &instances::getBounceBack() ); + sLattice.defineDynamics( superGeometry, 3, &bulkDynamics ); + sLattice.defineDynamics( superGeometry, 4, &bulkDynamics ); + + sBoundaryCondition.addVelocityBoundary( superGeometry, 3, omega ); + sBoundaryCondition.addPressureBoundary( superGeometry, 4, omega ); + + T Lx = converter.getLatticeLength( lx ); + T Ly = converter.getLatticeLength( ly ); + + T p0 =8.*converter.getLatticeViscosity()*converter.getCharLatticeVelocity()*Lx/( Ly*Ly ); + AnalyticalLinear2D rho( -p0/lx*DESCRIPTOR::invCs2 , 0 , p0*DESCRIPTOR::invCs2+1 ); + + T maxVelocity = converter.getCharLatticeVelocity(); + T distance2Wall = converter.getConversionFactorLength(); + Poiseuille2D u( superGeometry, 3, maxVelocity, distance2Wall ); + + // Initialize all values of distribution functions to their local equilibrium + sLattice.defineRhoU( superGeometry, 1, rho, u ); + sLattice.iniEquilibrium( superGeometry, 1, rho, u ); + sLattice.defineRhoU( superGeometry, 2, rho, u ); + sLattice.iniEquilibrium( superGeometry, 2, rho, u ); + sLattice.defineRhoU( superGeometry, 3, rho, u ); + sLattice.iniEquilibrium( superGeometry, 3, rho, u ); + sLattice.defineRhoU( superGeometry, 4, rho, u ); + sLattice.iniEquilibrium( superGeometry, 4, rho, u ); + + sLattice.initialize(); + + clout << "Prepare Lattice ... OK" << std::endl; +} + +void getResults( SuperLattice2D& sLattice, Dynamics& bulkDynamics, + UnitConverter const& converter, int iT, + SuperGeometry2D& superGeometry, Timer& timer, bool hasConverged ) { + + OstreamManager clout( std::cout,"getResults" ); + + SuperVTMwriter2D vtmWriter( "poiseuille2d" ); + SuperLatticePhysVelocity2D velocity( sLattice, converter ); + SuperLatticePhysPressure2D pressure( sLattice, converter ); + vtmWriter.addFunctor( velocity ); + vtmWriter.addFunctor( pressure ); + + const int vtmIter = converter.getLatticeTime( maxPhysT/20. ); + const int statIter = converter.getLatticeTime( maxPhysT/20. ); + + if ( iT==0 ) { + SuperLatticeGeometry2D geometry( sLattice, superGeometry ); + SuperLatticeCuboid2D cuboid( sLattice ); + SuperLatticeRank2D rank( sLattice ); + superGeometry.rename( 0,2 ); + vtmWriter.write( geometry ); + vtmWriter.write( cuboid ); + vtmWriter.write( rank ); + + vtmWriter.createMasterFile(); + } + + if ( iT%vtmIter==0 || hasConverged ) { + vtmWriter.write( iT ); + + SuperEuklidNorm2D normVel( velocity ); + BlockReduction2D2D planeReduction( normVel, 600, BlockDataSyncMode::ReduceOnly ); + // write output as JPEG + heatmap::write(planeReduction, iT); + } + + if ( iT%statIter==0 || hasConverged ) { + timer.update( iT ); + timer.printStep(); + + sLattice.getStatistics().print( iT,converter.getPhysTime( iT ) ); + } +} + +int main( int argc, char* argv[] ) { + olbInit( &argc, &argv ); + singleton::directories().setOutputDir( "./tmp/" ); + OstreamManager clout( std::cout,"main" ); + + UnitConverterFromResolutionAndRelaxationTime const converter( + int {N}, // resolution: number of voxels per charPhysL + (T) 0.8, // latticeRelaxationTime: relaxation time, have to be greater than 0.5! + (T) 1, // charPhysLength: reference length of simulation geometry + (T) 1, // charPhysVelocity: maximal/highest expected velocity during simulation in __m / s__ + (T) 1./Re, // physViscosity: physical kinematic viscosity in __m^2 / s__ + (T) 1.0 // physDensity: physical density in __kg / m^3__ + ); + converter.print(); + converter.write("poiseuille2d"); + + Vector extend( lx, ly ); + Vector origin; + IndicatorCuboid2D cuboid( extend, origin ); + +#ifdef PARALLEL_MODE_MPI + const int noOfCuboids = singleton::mpi().getSize(); +#else + const int noOfCuboids = 1; +#endif + CuboidGeometry2D cuboidGeometry( cuboid, converter.getConversionFactorLength(), noOfCuboids ); + + HeuristicLoadBalancer loadBalancer( cuboidGeometry ); + SuperGeometry2D superGeometry( cuboidGeometry, loadBalancer, 2 ); + + prepareGeometry( converter, superGeometry ); + + SuperLattice2D sLattice( superGeometry ); + + Dynamics* bulkDynamics; + bulkDynamics = new BGKdynamics( converter.getLatticeRelaxationFrequency(), instances::getBulkMomenta() ); + + sOnLatticeBoundaryCondition2D sBoundaryCondition( sLattice ); + createInterpBoundaryCondition2D ( sBoundaryCondition ); + + prepareLattice( converter, sLattice, *bulkDynamics, sBoundaryCondition, superGeometry ); + + clout << "starting simulation..." << endl; + Timer timer( converter.getLatticeTime( maxPhysT ), superGeometry.getStatistics().getNvoxel() ); + util::ValueTracer converge( converter.getLatticeTime( physInterval ), residuum ); + timer.start(); + + for ( int iT = 0; iT < converter.getLatticeTime( maxPhysT ); ++iT ) { + if ( converge.hasConverged() ) { + clout << "Simulation converged." << endl; + getResults( sLattice, *bulkDynamics, converter, iT, superGeometry, timer, converge.hasConverged() ); + + break; + } + + sLattice.collideAndStream(); + + getResults( sLattice, *bulkDynamics, converter, iT, superGeometry, timer, converge.hasConverged() ); + converge.takeValue( sLattice.getStatistics().getAverageEnergy(), true ); + } + + timer.stop(); + timer.printSummary(); +} -- cgit v1.2.3