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Diffstat (limited to 'tangle/LLBM/kernel/bouzidi.h')
-rw-r--r-- | tangle/LLBM/kernel/bouzidi.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tangle/LLBM/kernel/bouzidi.h b/tangle/LLBM/kernel/bouzidi.h new file mode 100644 index 0000000..b1abd2c --- /dev/null +++ b/tangle/LLBM/kernel/bouzidi.h @@ -0,0 +1,39 @@ +#pragma once +#include <LLBM/call_tag.h> +#include <LLBM/lattice.h> + +template <typename S> +struct BouzidiConfig { + std::size_t* boundary; // boundary cell to be interpolated + std::size_t* solid; // adjacent solid cell + std::size_t* fluid; // adjacent fluid cell + S* distance; // precomputed distance factor q + S* correction; // correction for moving walls + pop_index_t* missing; // population to be reconstructed +}; + +struct BouzidiO { + +using call_tag = tag::call_by_list_index; + +template <typename T, typename S, typename DESCRIPTOR> +__device__ static void apply( + LatticeView<DESCRIPTOR,S> lattice + , std::size_t index + , std::size_t count + , BouzidiConfig<S> config +) { + pop_index_t& iPop = config.missing[index]; + pop_index_t jPop = descriptor::opposite<DESCRIPTOR>(iPop); + pop_index_t kPop = config.boundary[index] == config.fluid[index] ? iPop : jPop; + + S f_bound_j = *lattice.pop(jPop, config.boundary[index]); + S f_fluid_j = *lattice.pop(kPop, config.fluid[index]); + S* f_next_i = lattice.pop(iPop, config.solid[index]); + + *f_next_i = config.distance[index] * f_bound_j + + (1. - config.distance[index]) * f_fluid_j + + config.correction[index]; +} + +}; |