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authorClaudius "keldu" Holeksa <mail@keldu.de>2025-04-23 20:19:36 +0200
committerClaudius "keldu" Holeksa <mail@keldu.de>2025-04-23 20:19:36 +0200
commit1dc57770fe88b0564463d67a77a4c35f403c5d7f (patch)
treea00949038f86e9d300afa54731b6ab372dc38666 /examples
parentf11181eafa66546da479cc47ee95231f0609c69d (diff)
Working on mask generation of static solid particles
Diffstat (limited to 'examples')
-rw-r--r--examples/cavity_2d.cpp28
-rw-r--r--examples/poiseulle_2d.cpp76
2 files changed, 76 insertions, 28 deletions
diff --git a/examples/cavity_2d.cpp b/examples/cavity_2d.cpp
index 4df4f2b..d40e06e 100644
--- a/examples/cavity_2d.cpp
+++ b/examples/cavity_2d.cpp
@@ -49,34 +49,6 @@ using CavityFieldD2Q9 = CellField<D2Q9, CellStruct<D2Q9>>;
}
/**
- * Unsure if feasible. I would have a rho normalization on the dfs and then I would use the const rho_computation
- */
-template<typename Desc>
-void compute_const_rho_u (
- saw::data<sch::DfCell<Desc>>& dfs,
- const typename saw::native_data_type<sch::T>::type rho,
- std::array<typename saw::native_data_type<sch::T>::type, 2>& vel
- )
-{
- using dfi = df_info<sch::T, Desc>;
-
- saw::native_data_type<sch::T>::type real_rho = 0;
- std::fill(vel.begin(), vel.end(), 0);
-
- for(size_t i = 0; i < Desc::Q; ++i){
- real_rho += dfs(i).get();
- vel[0] += dfi::directions[i][0] * dfs(i).get();
- vel[1] += dfi::directions[i][1] * dfs(i).get();
- }
- for(size_t i = 0; i < Desc::Q; ++i){
- dfs(i).set(dfs(i).get() * (rho/real_rho));
- }
-
- vel[0] *= real_rho / (rho*rho);
- vel[1] *= real_rho / (rho*rho);
-}
-
-/**
* Calculates the equilibrium for each direction
*/
template<typename Desc>
diff --git a/examples/poiseulle_2d.cpp b/examples/poiseulle_2d.cpp
index be3efbc..4ecf500 100644
--- a/examples/poiseulle_2d.cpp
+++ b/examples/poiseulle_2d.cpp
@@ -2,7 +2,83 @@
#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<2,5>;
+using D2Q9 = Descriptor<2,9>;
+
+template<typename Desc>
+using DfCell = Cell<T, Desc, 0, 0, 1>;
+
+template<typename Desc>
+using CellInfo = Cell<UInt8, D2Q9, 1, 0, 0>;
+
+/**
+ * Basic type for simulation
+ */
+template<typename Desc>
+using CellStruct = Struct<
+ Member<DfCell<Desc>, "dfs">,
+ Member<DfCell<Desc>, "dfs_old">,
+ Member<CellInfo<Desc>, "info">
+>;
+
+
+using CavityFieldD2Q9 = CellField<D2Q9, CellStruct<D2Q9>>;
+}
+}
+}
+
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<2,9>>(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<2,9>>(conv, {conf.template get<"kinematic_viscosity">()});
+
+
+ saw::data<sch::FixedArray<sch::UInt64,sch::D2Q9::D>> dim{{128, 128}};
+
+ saw::data<sch::CavityFieldD2Q9, saw::encode::Native> lattice{dim};
+
+
+
return 0;
}