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#pragma once
#include "component.hpp"
#include "equilibrium.hpp"
namespace kel {
namespace lbm {
namespace cmpt {
struct BounceBack {};
template<uint64_t i>
struct AntiBounceBack {};
template<bool East>
struct ZouHeHorizontal{};
struct Equilibrium {};
template<bool North>
struct ZouHePressureY{};
template<bool East>
struct ZouHeVelocityX {};
}
/**
* Full-Way BounceBack.
*/
template<typename T, typename Descriptor, typename Encode>
class component<T, Descriptor, cmpt::BounceBack, Encode> {
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(const saw::data<CellFieldSchema, Encode>& field, const saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>>& index, saw::data<sch::UInt64> time_step)const{
bool is_even = ((time_step.get() % 2u) == 0u);
// This is a ref
// auto& dfs_f = (is_even) ? field.template get<"dfs">() : field.template get<"dfs_old">();
auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
using dfi = df_info<T,Descriptor>;
// Technically use .copy()
auto& dfs_old = dfs_old_f.at(index);
auto df_cpy = dfs_old;
for(uint64_t i = 0u; i < Descriptor::Q; ++i){
dfs_old.at({i}) = df_cpy.at({dfi::opposite_index.at(i)});
}
}
};
/**
* Anti Full-Way BounceBack.
*/
template<typename T, typename Descriptor, uint64_t D, typename Encode>
class component<T, Descriptor, cmpt::AntiBounceBack<D>, Encode> {
private:
public:
component() = default;
using Component = cmpt::AntiBounceBack<D>;
/**
* 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_anti_bounce_back";
static constexpr saw::string_literal after = "";
static constexpr saw::string_literal before = "streaming";
/**
* Raw setup
*/
template<typename CellFieldSchema>
void apply(const saw::data<CellFieldSchema, Encode>& field, const saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>>& index, saw::data<sch::UInt64> time_step)const{
bool is_even = ((time_step.get() % 2u) == 0u);
// This is a ref
// auto& dfs_f = (is_even) ? field.template get<"dfs">() : field.template get<"dfs_old">();
auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
using dfi = df_info<T,Descriptor>;
// Technically use .copy()
auto& dfs_old = dfs_old_f.at(index);
auto df_cpy = dfs_old;
static_assert(Descriptor::D == 2u and Descriptor::Q == 9u, "Some parts are hard coded sadly");
dfs_old.at({0u}) = df_cpy.at({0u});
dfs_old.at({1u}) = df_cpy.at({1u});
dfs_old.at({2u}) = df_cpy.at({2u});
dfs_old.at({3u}) = df_cpy.at({4u});
dfs_old.at({4u}) = df_cpy.at({3u});
dfs_old.at({5u}) = df_cpy.at({7u});
dfs_old.at({6u}) = df_cpy.at({8u});
dfs_old.at({7u}) = df_cpy.at({5u});
dfs_old.at({8u}) = df_cpy.at({6u});
}
};
template<typename FP, typename Descriptor, typename Encode>
class component<FP, Descriptor, cmpt::Equilibrium, Encode> final {
private:
saw::data<sch::Scalar<FP>> density_;
saw::data<sch::Vector<FP,Descriptor::D>> velocity_;
public:
component(
saw::data<sch::Scalar<FP>> density__,
saw::data<sch::Vector<FP,Descriptor::D>> velocity__
):
density_{density__},
velocity_{velocity__}
{}
template<typename CellFieldSchema>
void apply(const saw::data<CellFieldSchema, Encode>& field, const saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>>& index, saw::data<sch::UInt64> time_step) const {
bool is_even = ((time_step.get() % 2u) == 0u);
using dfi = df_info<FP,Descriptor>;
auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
auto eq = equilibrium<FP,Descriptor>(density_,velocity_);
dfs_old_f.at(index) = eq;
}
};
/**
* 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, typename Encode>
class component<FP, Descriptor, cmpt::ZouHeHorizontal<Dir>, Encode> final {
private:
saw::data<FP> rho_setting_;
public:
component(const saw::data<FP>& density_setting__):
rho_setting_{density_setting__}
{}
template<typename CellFieldSchema>
void apply(const saw::data<CellFieldSchema, Encode>& field, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, saw::data<sch::UInt64> time_step) const {
using dfi = df_info<FP,Descriptor>;
constexpr int known_dir = Dir ? 1 : -1;
bool is_even = ((time_step.get() % 2) == 0);
auto& info_f = field.template get<"info">();
// auto& dfs_f = (is_even) ? field.template get<"dfs">() : field.template get<"dfs_old">();
auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
auto& dfs_old = dfs_old_f.at(index);
/**
* 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()];
if(c_k[0u]*known_dir <= 0){
sum_df += dfs_old.at({k});
}
}
/**
* Get the sum of the unknown dfs and precalculate the direction
*/
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()];
if(c_k[0u]*known_dir < 0){
sum_unknown_dfs += dfs_old.at({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.at({2u}) = dfs_old.at({1u}) + saw::data<FP>{2.0 / 3.0} * rho_setting_ * vel_x;
dfs_old.at({6u}) = dfs_old.at({5u}) + saw::data<FP>{1.0 / 6.0} * rho_setting_ * vel_x + saw::data<FP>{0.5} * (dfs_old.at({4u}) - dfs_old.at({3u}));
dfs_old.at({8u}) = dfs_old.at({7u}) + saw::data<FP>{1.0 / 6.0} * rho_setting_ * vel_x + saw::data<FP>{0.5} * (dfs_old.at({3u}) - dfs_old.at({4u}));
}else if constexpr (not Dir){
dfs_old.at({1u}) = dfs_old.at({2u}) - saw::data<FP>{2.0 / 3.0} * rho_setting_ * vel_x;
dfs_old.at({5u}) = dfs_old.at({6u}) - saw::data<FP>{1.0 / 6.0} * rho_setting_ * vel_x + saw::data<FP>{0.5} * (dfs_old.at({3u}) - dfs_old.at({4u}));
dfs_old.at({7u}) = dfs_old.at({8u}) - saw::data<FP>{1.0 / 6.0} * rho_setting_ * vel_x + saw::data<FP>{0.5} * (dfs_old.at({4u}) - dfs_old.at({3u}));
}
}
};
/*
template<typename FP, typename Descriptor, bool East, typename Encode>
class component<FP, Descriptor, cmpt::ZouHeVelocityX<East>, Encode> final {
private:
saw::data<sch::Vector<FP,Descriptor::D>> velocity_;
public:
component(
saw::data<sch::Vector<FP,Descriptor::D>> velocity__
):
velocity_{velocity__}
{}
template<typename CellFieldSchema>
void apply(const saw::data<CellFieldSchema, Encode>& field, const saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>>& index, saw::data<sch::UInt64> time_step) const {
bool is_even = ((time_step.get() % 2u) == 0u);
using dfi = df_info<FP,Descriptor>;
auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
}
};
*/
}
}
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