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authorClaudius "keldu" Holeksa <mail@keldu.de>2026-07-05 15:59:23 +0200
committerClaudius "keldu" Holeksa <mail@keldu.de>2026-07-05 15:59:23 +0200
commitc0549d71b2109f10c1238db8b22362e7826ba61b (patch)
tree16cd5264fcc3afe912e1b1b67738c8940d6d1177 /lib/core/c++/fplbm.hpp
parent9a3147bc79caf3c0fb1a9cdee29d156b5ff092c7 (diff)
downloadlibs-lbm-c0549d71b2109f10c1238db8b22362e7826ba61b.tar.gz
Just rename from lib to modules
Diffstat (limited to 'lib/core/c++/fplbm.hpp')
-rw-r--r--lib/core/c++/fplbm.hpp191
1 files changed, 0 insertions, 191 deletions
diff --git a/lib/core/c++/fplbm.hpp b/lib/core/c++/fplbm.hpp
deleted file mode 100644
index c974472..0000000
--- a/lib/core/c++/fplbm.hpp
+++ /dev/null
@@ -1,191 +0,0 @@
-#pragma once
-
-#include "common.hpp"
-
-namespace kel {
-namespace lbm {
-namespace cmpt {
-struct FpLbm {};
-struct FpLbmOneParticleNoVelocity{};
-}
-
-template<typename T, typename Descriptor, typename Encode>
-class component<T, Descriptor, cmpt::FpLbm, Encode> final {
-private:
- saw::data<T> relaxation_;
- saw::data<T> frequency_;
-public:
- component(typename saw::native_data_type<T>::type relaxation__):
- relaxation_{{relaxation__}},
- frequency_{saw::data<T>{1} / relaxation_}
- {}
-
- component(const saw::data<T>& relaxation__):
- relaxation_{relaxation__},
- frequency_{saw::data<T>{1} / relaxation_}
- {}
-
- using Component = cmpt::FpLbm;
-
-
- template<typename CellFieldSchema, typename MacroFieldSchema>
- void apply(const saw::data<CellFieldSchema, Encode>& field, const saw::data<MacroFieldSchema,Encode>& macros, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, saw::data<sch::UInt64> time_step) const {
- // void apply(saw::data<CellFieldSchema, Encode>& field, saw::data<sch::FixedArray<sch::UInt64, Descriptor::D>> index, saw::data<sch::UInt64> time_step){
- bool is_even = ((time_step.get() % 2) == 0);
-
- auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
- auto& dfs = dfs_old_f.at(index);
-
- auto& rho_f = macros.template get<"density">();
- auto& vel_f = macros.template get<"velocity">();
-
- saw::data<sch::Scalar<T>>& rho = rho_f.at(index);
- saw::data<sch::Vector<T,Descriptor::D>>& vel = vel_f.at(index);
-
- compute_rho_u<T,Descriptor>(dfs_old_f.at(index),rho,vel);
- auto eq = equilibrium<T,Descriptor>(rho,vel);
-
- using dfi = df_info<T,Descriptor>;
-
- auto& force_f = macros.template get<"force">();
- auto& force = force_f.at(index);
-
- auto& porosity_f = macros.template get<"porosity">();
- auto& porosity = porosity_f.at(index);
-
- saw::data<sch::Scalar<T>> dfi_inv_cs2;
- dfi_inv_cs2.at({}).set(dfi::inv_cs2);
-
- for(uint64_t i = 0u; i < Descriptor::Q; ++i){
- // saw::data<T> ci_min_u{0};
- saw::data<sch::Vector<T,Descriptor::D>> ci;
- for(uint64_t d = 0u; d < Descriptor::D; ++d){
- ci.at({{d}}).set(static_cast<typename saw::native_data_type<T>::type>(dfi::directions[i][d]));
- }
- auto ci_dot_u = saw::math::dot(ci,vel);
-
- // saw::data<sch::Vector<T,Descriptor::D>> F_i;
- // F_i = f * (c_i - u * ics2 + <c_i,u> * c_i * ics2 * ics2) * w_i;
- saw::data<sch::Scalar<T>> w;
- w.at({}).set(dfi::weights[i]);
-
- auto F_i_d = saw::math::dot(force * w, (ci - vel * dfi_inv_cs2 + ci * ci_dot_u * dfi_inv_cs2 * dfi_inv_cs2 ));
- /*
- saw::data<sch::Scalar<T>> F_i_sum;
- for(uint64_t d = 0u; d < Descriptor::D; ++d){
- saw::data<sch::Scalar<T>> F_i_d;
- F_i_d.at({}) = F_i.at({{d}});
- F_i_sum = F_i_sum + F_i_d;
- }
- */
-
- dfs.at({i}) = dfs.at({i}) + frequency_ * (eq.at(i) - dfs.at({i}) ) + F_i_d.at({}) * (saw::data<T>{1} - saw::data<T>{0.5f} * frequency_);
- }
- }
-};
-
-template<typename T, typename Descriptor, typename Encode>
-class component<T, Descriptor, cmpt::FpLbmOneParticleNoVelocity, Encode> final {
-private:
- saw::data<T> relaxation_;
- saw::data<T> frequency_;
-public:
- component(typename saw::native_data_type<T>::type relaxation__):
- relaxation_{{relaxation__}},
- frequency_{saw::data<T>{1} / relaxation_}
- {}
-
- component(const saw::data<T>& relaxation__):
- relaxation_{relaxation__},
- frequency_{saw::data<T>{1} / relaxation_}
- {}
-
- using Component = cmpt::FpLbmOneParticleNoVelocity;
-
- template<typename CellFieldSchema, typename MacroFieldSchema>
- void apply(const saw::data<CellFieldSchema, Encode>& field, const saw::data<MacroFieldSchema,Encode>& macros, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, saw::data<sch::UInt64> time_step) const {
- // void apply(saw::data<CellFieldSchema, Encode>& field, saw::data<sch::FixedArray<sch::UInt64, Descriptor::D>> index, saw::data<sch::UInt64> time_step){
- bool is_even = ((time_step.get() % 2) == 0);
-
- auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
- auto& dfs = dfs_old_f.at(index);
-
- auto& rho_f = macros.template get<"density">();
- auto& vel_f = macros.template get<"velocity">();
- auto& por_f = macros.template get<"porosity">();
-
- // Temporary find a better way
- auto& force_f = macros.template get<"force">();
-
-
- /**
- * The other methods all work with a flipped porosity.
- * For compat reasons this is also flipped
- */
- auto porosity = por_f.at(index);
- saw::data<sch::Scalar<T>> one;
- one.at({}) = 1.0;
- auto flip_porosity = one - porosity;
-
- saw::data<sch::Scalar<T>>& rho = rho_f.at(index);
-
- saw::data<sch::Scalar<T>> half;
- half.at({}).set(0.5);
- saw::data<sch::Vector<T,Descriptor::D>>& vel = vel_f.at(index);// + total_force * ( half / rho );
-
- compute_rho_u<T,Descriptor>(dfs_old_f.at(index),rho,vel);
- auto eq = equilibrium<T,Descriptor>(rho,vel);
-
- using dfi = df_info<T,Descriptor>;
-
- saw::data<sch::Scalar<T>> min_two;
- min_two.at({}).set(-2);
-
- // Maybe ?
- auto& force = force_f.at(index);
- force = vel * rho * min_two * flip_porosity;
-
- saw::data<sch::Scalar<T>> dfi_inv_cs2;
- dfi_inv_cs2.at({}).set(dfi::inv_cs2);
-
- // auto vel = vel_f.at(index);
-
- for(uint64_t i = 0u; i < Descriptor::Q; ++i){
- // saw::data<T> ci_min_u{0};
- saw::data<sch::Vector<T,Descriptor::D>> ci;
- for(uint64_t d = 0u; d < Descriptor::D; ++d){
- ci.at({{d}}).set(static_cast<typename saw::native_data_type<T>::type>(dfi::directions[i][d]));
- }
- auto ci_dot_u = saw::math::dot(ci,vel);
-
- // saw::data<sch::Vector<T,Descriptor::D>> F_i;
- // F_i = f * ((c_i - u) * ics2 + <c_i,u> * c_i * ics2 * ics2) * w_i;
- saw::data<sch::Scalar<T>> w;
- w.at({}).set(dfi::weights[i]);
-
- /*
- saw::data<sch::Scalar<T>> F_i_sum;
- for(uint64_t d = 0u; d < Descriptor::D; ++d){
- saw::data<sch::Scalar<T>> F_i_d;
- F_i_d.at({}) = F_i.at({{d}});
- F_i_sum = F_i_sum + F_i_d;
- }
- */
- auto term1 = (ci-vel) * dfi_inv_cs2;
- auto term2 = ci * (ci_dot_u * dfi_inv_cs2 * dfi_inv_cs2);
-
- auto force_projection = saw::math::dot(term1 + term2, force);
-
- auto F_i = w * force_projection;
-
- dfs.at({i}) = dfs.at({i})
- + frequency_
- * (eq.at(i) - dfs.at({i}) )
- + F_i.at({})
- * (saw::data<T>{1} - saw::data<T>{0.5f} * frequency_);
- }
- }
-
-};
-}
-}