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#include "../c++/lbm.hpp"
#include "../c++/collision.hpp"
#include "../c++/boundary.hpp"
#include "../c++/iterator.hpp"
#include <forstio/codec/data.hpp>
namespace kel {
namespace lbm {
namespace sch {
using namespace saw::schema;
/**
* Basic distribution function
* Base type
* D
* Q
* Scalar factor
* D factor
* Q factor
*/
using T = Float32;
using D2Q5 = Descriptor<2u,5u>;
using D2Q9 = Descriptor<2u,9u>;
template<typename Desc>
using DfCell = Cell<T, Desc, 0u, 0u, 1u>;
template<typename Desc>
using CellInfo = Cell<UInt8, D2Q9, 1u, 0u, 0u>;
/**
* Basic type for simulation
*/
template<typename Desc>
using CellStruct = Struct<
Member<DfCell<Desc>, "dfs">,
Member<DfCell<Desc>, "dfs_old">,
Member<CellInfo<Desc>, "info">
>;
template<typename T, uint64_t D>
using MacroStruct = Struct<
Member<FixedArray<T,D>, "velocity">,
Member<T, "pressure">
>;
using CavityFieldD2Q9 = CellField<D2Q9, CellStruct<D2Q9>>;
}
}
}
void set_geometry(saw::data<kel::lbm::sch::CavityFieldD2Q9>& latt){
using namespace kel::lbm;
auto meta = latt.meta();
/**
* Set ghost
*/
iterate_over([&](const saw::data<sch::FixedArray<sch::UInt64,2u>>& index){
auto& cell = latt(index);
auto& info = cell.template get<"info">();
info({0u}).set(0u);
}, {{0u,0u}}, meta);
/**
* Set wall
*/
iterate_over([&](const saw::data<sch::FixedArray<sch::UInt64,2u>>& index){
auto& cell = latt(index);
auto& info = cell.template get<"info">();
info({0u}).set(2u);
}, {{0u,0u}}, meta, {{1u,1u}});
/**
* Set fluid
*/
iterate_over([&](const saw::data<sch::FixedArray<sch::UInt64,2u>>& index){
auto& cell = latt(index);
auto& info = cell.template get<"info">();
info({0u}).set(1u);
}, {{0u,0u}}, meta, {{2u,2u}});
/**
* Set inflow
*/
iterate_over([&](const saw::data<sch::FixedArray<sch::UInt64,2u>>& index){
auto& cell = latt(index);
auto& info = cell.template get<"info">();
info({0u}).set(3u);
}, {{1u,0u}}, {{2u,meta.at({1u})}}, {{0u,2u}});
/**
* Set outflow
*/
iterate_over([&](const saw::data<sch::FixedArray<sch::UInt64,2u>>& index){
auto& cell = latt(index);
auto& info = cell.template get<"info">();
info({0u}).set(4u);
}, {{meta.at({0u})-2u,0u}}, {{meta.at({0u})-1u, meta.at({1u})}}, {{0u,2u}});
}
void set_initial_conditions(saw::data<kel::lbm::sch::CavityFieldD2Q9>& latt){
using namespace kel::lbm;
auto meta = latt.meta();
}
int main(int argc, char** argv){
using namespace kel::lbm;
std::string_view cfg_file_name = "config.json";
if(argc > 1){
cfg_file_name = argv[1];
}
auto eo_conf = load_lbm_config<sch::Float64,sch::Descriptor<2u,9u>>(cfg_file_name);
if(eo_conf.is_error()){
auto& err = eo_conf.get_error();
std::cerr<<"[Error]: "<<err.get_category();
auto err_msg = err.get_message();
if(!err_msg.empty()){
std::cerr<<" - "<<err_msg;
}
std::cerr<<std::endl;
return err.get_id();
}
auto& conf = eo_conf.get_value();
converter<sch::Float64> conv {
{conf.template get<"delta_x">()},
{conf.template get<"delta_t">()}
};
print_lbm_meta<sch::Float64,sch::Descriptor<2u,9u>>(conv, {conf.template get<"kinematic_viscosity">()});
saw::data<sch::FixedArray<sch::UInt64,sch::D2Q9::D>> dim{{32u, 8u}};
saw::data<sch::CavityFieldD2Q9, saw::encode::Native> lattice{dim};
set_geometry(lattice);
/**
* Print basic setup info
*/
iterate_over([&](const saw::data<sch::FixedArray<sch::UInt64,2u>>& index){
auto& cell = lattice(index);
auto& info = cell.template get<"info">();
auto info_v = info({0u}).get();
std::cout<<(static_cast<uint32_t>(info_v));
if( (index.at({1u}).get()+1u) < dim.at({1u}).get()){
std::cout<<" ";
}else{
std::cout<<"\n";
}
}, {{0u,0u}}, dim);
saw::data<sch::Array<sch::MacroStruct<sch::T,sch::D2Q9::D>,sch::D2Q9::D>> macros{dim};
for(uint64_t i = 0u; i < 256u; ++i){
{
std::string vtk_f_name{"tmp/poiseulle_2d_"};
vtk_f_name += std::to_string(i) + ".vtk";
write_vtk_file(vtk_f_name, macros);
}
// lbm_step(lattice, i);
}
return 0;
}
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