summaryrefslogtreecommitdiff
path: root/c++/boundary.hpp
diff options
context:
space:
mode:
authorClaudius "keldu" Holeksa <mail@keldu.de>2025-10-18 18:01:14 +0200
committerClaudius "keldu" Holeksa <mail@keldu.de>2025-10-18 18:01:14 +0200
commit24bf28a8fb9cc8c3a90b77de9b60728bece7885d (patch)
treedfcbfcb8775bf96847d4a187695158b968902889 /c++/boundary.hpp
parenta980da34513a9ad41e309e66432fcb80ddaf2e31 (diff)
downloadlibs-lbm-24bf28a8fb9cc8c3a90b77de9b60728bece7885d.tar.gz
Moving project structure for more less compilation
Diffstat (limited to 'c++/boundary.hpp')
-rw-r--r--c++/boundary.hpp154
1 files changed, 0 insertions, 154 deletions
diff --git a/c++/boundary.hpp b/c++/boundary.hpp
deleted file mode 100644
index 4e30f71..0000000
--- a/c++/boundary.hpp
+++ /dev/null
@@ -1,154 +0,0 @@
-#pragma once
-
-#include "component.hpp"
-#include "equilibrium.hpp"
-
-namespace kel {
-namespace lbm {
-namespace cmpt {
-struct BounceBack {};
-
-template<bool East>
-struct ZouHeHorizontal{};
-
-template<bool North>
-struct ZouHeVertical{};
-}
-
-/**
- * Full-Way BounceBack.
- */
-template<typename T, typename Descriptor>
-class component<T, Descriptor, cmpt::BounceBack> {
-private:
-public:
- component() = default;
-
- using Component = cmpt::BounceBack;
-
- /**
- * Thoughts regarding automating order setup
- */
- using access = cmpt::access_tuple<
- cmpt::access<"dfs", 1, true, true, true>
- >;
-
- /**
- * Thoughts regarding automating order setup
- */
- static constexpr saw::string_literal name = "full_way_bounce_back";
- static constexpr saw::string_literal after = "";
- static constexpr saw::string_literal before = "streaming";
-
- /**
- * Raw setup
- */
- template<typename CellFieldSchema>
- void apply(saw::data<CellFieldSchema>& field, const saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>>& index, uint64_t time_step){
- bool is_even = ((time_step % 2u) == 0u);
-
- // This is a ref
- auto& cell = field(index);
-
- auto& dfs_old = (is_even) ? cell.template get<"dfs_old">() : cell.template get<"dfs">();
- // auto& dfs = (not is_even) ? cell.template get<"dfs_old">() : cell.template get<"dfs">();
-
- using dfi = df_info<T,Descriptor>;
-
- // Technically use .copy()
- auto df_cpy = dfs_old.copy();
-
- for(uint64_t i = 1u; i < Descriptor::Q; ++i){
- dfs_old({i}) = df_cpy({dfi::opposite_index.at(i)});
- }
- }
-};
-
-/**
- * This is massively hacky and expects a lot of conditions
- * Either this or mirrored along the horizontal line works
- *
- * 0 - 2 - 2
- * 0 - 3 - 1
- * 0 - 3 - 1
- * .........
- * 0 - 3 - 1
- * 0 - 2 - 2
- *
- */
-template<typename FP, typename Descriptor, bool Dir>
-class component<FP, Descriptor, cmpt::ZouHeHorizontal<Dir>> final {
-private:
- saw::data<FP> pressure_setting_;
- saw::data<FP> rho_setting_;
-public:
- component(const saw::data<FP>& pressure_setting__):
- pressure_setting_{pressure_setting__},
- rho_setting_{pressure_setting__ * df_info<FP,Descriptor>::inv_cs2}
- {}
-
- template<typename CellFieldSchema>
- void apply(saw::data<CellFieldSchema>& field, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, uint64_t time_step){
- using dfi = df_info<FP,Descriptor>;
-
- bool is_even = ((time_step % 2) == 0);
- auto& cell = field(index);
-
- auto& info = cell.template get<"info">();
- if(info({0u}).get() == 0u){
- return;
- }
- auto& dfs_old = (is_even) ? cell.template get<"dfs_old">() : cell.template get<"dfs">();
- // auto& dfs = (not is_even) ? cell.template get<"dfs_old">() : cell.template get<"dfs">();
-
- /**
- * Sum all known DFs
- */
- saw::data<FP> sum_df{0};
- for(saw::data<sch::UInt64> k{0u}; k < saw::data<sch::UInt64>{Descriptor::Q}; ++k){
- auto c_k = dfi::directions[k.get()];
- auto& cell_n = field({{index.at({0u})+c_k[0u], index.at({1u})+c_k[1u]}});
- auto& info_n = cell_n.template get<"info">();
- auto info_n_val = info_n({0u});
- auto k_opp = dfi::opposite_index[k.get()];
-
- if(info_n_val.get() > 0u){
- sum_df += dfs_old({k_opp});
- }
- }
-
- /**
- * Get the sum of the unknown dfs and precalculate the direction
- */
- constexpr int known_dir = Dir ? 1 : -1;
- auto sum_unknown_dfs = (rho_setting_ - sum_df) * saw::data<FP>{known_dir};
-
- for(saw::data<sch::UInt64> k{0u}; k < saw::data<sch::UInt64>{Descriptor::Q}; ++k){
- auto c_k = dfi::directions[k.get()];
- auto& cell_n = field({{index.at({0u})+c_k[0u], index.at({1u})+c_k[1u]}});
- auto& info_n = cell_n.template get<"info">();
- auto info_n_val = info_n({0u});
- // auto k_opp = dfi::opposite_index[k.get()];
-
- if(info_n_val.get() > 0u){
- sum_unknown_dfs += dfs_old({k}) * c_k[0u];
- }
- }
-
- auto vel_x = sum_unknown_dfs / rho_setting_;
-
- static_assert(Descriptor::D == 2u and Descriptor::Q == 9u, "Some parts are hard coded sadly");
-
- if constexpr (Dir) {
- dfs_old({2u}) = dfs_old({1u}) + saw::data<FP>{2.0 / 3.0} * rho_setting_ * vel_x;
- dfs_old({6u}) = dfs_old({5u}) + saw::data<FP>{1.0 / 6.0} * rho_setting_ * vel_x + saw::data<FP>{0.5} * (dfs_old({4u}) - dfs_old({3u}));
- dfs_old({8u}) = dfs_old({7u}) + saw::data<FP>{1.0 / 6.0} * rho_setting_ * vel_x + saw::data<FP>{0.5} * (dfs_old({3u}) - dfs_old({4u}));
- }else if constexpr (not Dir){
- dfs_old({1u}) = dfs_old({2u}) - saw::data<FP>{2.0 / 3.0} * rho_setting_ * vel_x;
- dfs_old({5u}) = dfs_old({6u}) - saw::data<FP>{1.0 / 6.0} * rho_setting_ * vel_x + saw::data<FP>{0.5} * (dfs_old({3u}) - dfs_old({4u}));
- dfs_old({7u}) = dfs_old({8u}) - saw::data<FP>{1.0 / 6.0} * rho_setting_ * vel_x + saw::data<FP>{0.5} * (dfs_old({4u}) - dfs_old({3u}));
- }
- }
-};
-}
-}