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authorClaudius "keldu" Holeksa <mail@keldu.de>2025-09-09 10:57:25 +0200
committerClaudius "keldu" Holeksa <mail@keldu.de>2025-09-09 10:57:25 +0200
commit3fa7dcb5684504dc99d14d2dc003876151636834 (patch)
tree8f2dee12c94c47bd218a4ce0e4770fe576fd7c08
parent1f993006305952f4cafddd08267731877e808bba (diff)
Removing warnings
-rw-r--r--c++/boundary.hpp85
-rw-r--r--c++/collision.hpp2
-rw-r--r--c++/descriptor.hpp49
-rw-r--r--c++/particle/particle.hpp2
-rw-r--r--examples/poiseulle_particles_channel_2d.cpp96
-rw-r--r--tests/vtk_write.cpp2
6 files changed, 140 insertions, 96 deletions
diff --git a/c++/boundary.hpp b/c++/boundary.hpp
index bc4859c..4e30f71 100644
--- a/c++/boundary.hpp
+++ b/c++/boundary.hpp
@@ -64,10 +64,91 @@ public:
}
};
-template<typename T, typename Descriptor, bool Dir>
-class component<T, Descriptor, cmpt::ZouHeHorizontal<Dir>> final {
+/**
+ * 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}));
+ }
+ }
};
}
}
diff --git a/c++/collision.hpp b/c++/collision.hpp
index cd6cf14..1b8b82d 100644
--- a/c++/collision.hpp
+++ b/c++/collision.hpp
@@ -106,7 +106,7 @@ public:
auto& force = cell.template get<"force">();
for(uint64_t i = 0u; i < Descriptor::Q; ++i){
- saw::data<T> ci_min_u{0};
+ // saw::data<T> ci_min_u{0};
saw::data<T> ci_dot_u{0};
for(uint64_t d = 0u; d < Descriptor::D; ++d){
ci_dot_u = ci_dot_u + vel.at({d}) * saw::data<T>{static_cast<typename saw::native_data_type<T>::type>(dfi::directions[i][d])};
diff --git a/c++/descriptor.hpp b/c++/descriptor.hpp
index 0d05a04..0c6707a 100644
--- a/c++/descriptor.hpp
+++ b/c++/descriptor.hpp
@@ -153,6 +153,55 @@ public:
static constexpr typename saw::native_data_type<T>::type inv_cs2 = 3.0;
static constexpr typename saw::native_data_type<T>::type cs2 = 1./3.;
};
+/*
+template<typename T>
+class df_info<T,sch::Descriptor<3, 27>> {
+public:
+ using Descriptor = sch::Descriptor<3,27>;
+
+ static constexpr uint64_t D = 3u;
+ static constexpr uint64_t Q = 27u;
+
+ static constexpr std::array<std::array<int32_t, D>, Q> directions = {{
+ { 0, 0, 0},
+ {-1, 0, 0},
+ { 1, 0, 0},
+ { 0,-1, 0},
+ { 0, 1, 0},
+ {-1,-1, 0},
+ { 1, 1, 0},
+ {-1, 1, 0},
+ { 1,-1, 0}
+ }};
+
+ static constexpr std::array<typename saw::native_data_type<T>::type,Q> weights = {
+ 4./9.,
+ 1./9.,
+ 1./9.,
+ 1./9.,
+ 1./9.,
+ 1./36.,
+ 1./36.,
+ 1./36.,
+ 1./36.
+ };
+
+ static constexpr std::array<uint64_t,Q> opposite_index = {
+ 0,
+ 2,
+ 1,
+ 4,
+ 3,
+ 6,
+ 5,
+ 8,
+ 7
+ };
+
+ static constexpr typename saw::native_data_type<T>::type inv_cs2 = 3.0;
+ static constexpr typename saw::native_data_type<T>::type cs2 = 1./3.;
+};
+*/
template<typename Schema>
class cell_schema_builder {
diff --git a/c++/particle/particle.hpp b/c++/particle/particle.hpp
index ae7769a..24757c1 100644
--- a/c++/particle/particle.hpp
+++ b/c++/particle/particle.hpp
@@ -43,7 +43,7 @@ private:
auto& pos = body.template get<"position">();
auto& pos_old = body.template get<"position_old">();
- auto& rot = body.template get<"rotation">();
+ // auto& rot = body.template get<"rotation">();
auto& acc = body.template get<"acceleration">();
auto tsd_squared = time_step_delta * time_step_delta;
diff --git a/examples/poiseulle_particles_channel_2d.cpp b/examples/poiseulle_particles_channel_2d.cpp
index bc5d241..737488b 100644
--- a/examples/poiseulle_particles_channel_2d.cpp
+++ b/examples/poiseulle_particles_channel_2d.cpp
@@ -68,94 +68,6 @@ using GeometryStruct = Struct<
using CavityFieldD2Q9 = CellField<D2Q9, CellStruct<D2Q9>>;
}
-namespace cmpt {
-template<bool East>
-struct PressureBoundaryRestrictedVelocityTo {};
-}
-
-/**
- * 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 East>
-struct component<FP,Descriptor, cmpt::PressureBoundaryRestrictedVelocityTo<East>> {
-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 = East ? 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_;
-
- if constexpr (East) {
- 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 East){
- 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}));
- }
- }
-};
}
}
@@ -400,7 +312,7 @@ void couple_particles_to_lattice(
// Fluid to Particle Coupling
// Prepare force sum
- saw::data<sch::Vector<sch::T,2u>> forces;
+ // saw::data<sch::Vector<sch::T,2u>> forces;
iterate_over([&](const saw::data<sch::FixedArray<sch::UInt64,2u>>& index){
@@ -484,14 +396,16 @@ void lbm_step(
using namespace kel::lbm;
using dfi = df_info<sch::T,sch::D2Q9>;
+ (void) macros;
+
bool even_step = ((time_step % 2u) == 0u);
/**
* 1. Relaxation parameter \tau
*/
component<sch::T, sch::D2Q9, cmpt::BGKGuo> coll{0.5384};
component<sch::T, sch::D2Q9, cmpt::BounceBack> bb;
- component<sch::T, sch::D2Q9, cmpt::PressureBoundaryRestrictedVelocityTo<true>> inlet{1.1 * dfi::cs2 * 2.0 / 3.0};
- component<sch::T, sch::D2Q9, cmpt::PressureBoundaryRestrictedVelocityTo<false>> outlet{1.0 * dfi::cs2 * 2.0 / 3.0};
+ component<sch::T, sch::D2Q9, cmpt::ZouHeHorizontal<true>> inlet{1.1 * dfi::cs2 * 2.0 / 3.0};
+ component<sch::T, sch::D2Q9, cmpt::ZouHeHorizontal<false>> outlet{1.0 * dfi::cs2 * 2.0 / 3.0};
auto meta = latt.meta();
diff --git a/tests/vtk_write.cpp b/tests/vtk_write.cpp
index b2e30f0..0df9998 100644
--- a/tests/vtk_write.cpp
+++ b/tests/vtk_write.cpp
@@ -48,7 +48,7 @@ SAW_TEST("VTK Write test example"){
auto& cell_0 = cells.at({{{0,0}}});
cell_0.template get<"velocity">()= {{0.5,-0.1}};
- cell_0.template get<"pressure">().set({1.1});
+ cell_0.template get<"pressure">().set(1.1);
auto eov = lbm::impl::lbm_vtk_writer<sch::Array<sch::MacroStruct<sch::T,2>, 2>>::apply(sstream, cells);
SAW_EXPECT(eov.is_value(), "vtk writer failed to write");