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#pragma once
#include "macroscopic.hpp"
#include "component.hpp"
#include "equilibrium.hpp"
namespace kel {
namespace lbm {
namespace cmpt {
struct HlbmInit {};
struct Hlbm {};
struct HlbmParticle {};
}
template<typename T, typename Descriptor, typename Encode>
class component<T, Descriptor, cmpt::HlbmInit, Encode> final {
private:
typename saw::native_data_type<T>::type relaxation_;
saw::data<T> frequency_;
public:
component(typename saw::native_data_type<T>::type relaxation__):
relaxation_{relaxation__},
frequency_{typename saw::native_data_type<T>::type(1) / relaxation_}
{}
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 {
auto& porosity_f = macros.template get<"porosity">();
auto& particle_N_f = field.template get<"particle_N">();
auto& particle_D_f = field.template get<"particle_D">();
auto& por = porosity_f.at(index);
por = {};
auto& pnf = particle_N_f.at(index);
pnf = {};
auto& pnd = particle_D_f.at(index);
pnd = {};
}
};
/**
* HLBM collision operator for LBM
*/
template<typename T, typename Descriptor, typename Encode>
class component<T, Descriptor, cmpt::Hlbm, Encode> final {
private:
typename saw::native_data_type<T>::type relaxation_;
saw::data<T> frequency_;
public:
component(typename saw::native_data_type<T>::type relaxation__):
relaxation_{relaxation__},
frequency_{typename saw::native_data_type<T>::type(1) / relaxation_}
{}
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 {
bool is_even = ((time_step.get() % 2) == 0);
auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
auto& particle_N_f = field.template get<"particle_N">();
auto& particle_D_f = field.template get<"particle_D">();
auto& porosity_f = macros.template get<"porosity">();
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& porosity = porosity_f.at(index);
saw::data<sch::Scalar<T>> one;
one.at({}) = 1.0;
auto flip_porosity = one - porosity;
auto& N = particle_N_f.at(index);
auto& D = particle_D_f.at(index);
// Convex combination of velocities
vel = vel * porosity + [&]() -> saw::data<sch::Vector<T,Descriptor::D>> {
return (D.at({}).get() > 0.0 ? N * flip_porosity / D : N);
}();
// Equilibrium
auto eq = equilibrium<T,Descriptor>(rho,vel);
for(uint64_t i = 0u; i < Descriptor::Q; ++i){
dfs_old_f.at(index).at({i}) = dfs_old_f.at(index).at({i}) + frequency_ * (eq.at(i) - dfs_old_f.at(index).at({i}));
}
porosity.at({}) = 1.0;
D.at({}) = 0.0;
N = {};
}
};
namespace impl {
}
template<typename T, typename Desc, typename Encode>
class component<T, Descriptor, cmpt::HlbmParticle, Encode> final {
private:
template<typename CellFieldSchema, typename MacroFieldSchema, typename ParticleSchema, uint64_t i>
void apply_i(const saw::data<CellFieldSchema, Encode>& field, const saw::data<MacroFieldSchema,Encode>& macros, const saw::data<ParticleSchema,Encode>& part_groups, saw::data<sch::FixedArray<sch::UInt64,1u>> index, saw::data<sch::UInt64> time_step) const {
}
public:
/*
template<typename CellFieldSchema, typename MacroFieldSchema, typename ParticleSchema, uint64_t i>
void apply_i()
*/
template<typename CellFieldSchema, typename MacroFieldSchema, typename ParticleSchema>
void apply(const saw::data<CellFieldSchema, Encode>& field, const saw::data<MacroFieldSchema,Encode>& macros, const saw::data<ParticleSchema,Encode>& part_groups, saw::data<sch::FixedArray<sch::UInt64,1u>> index, saw::data<sch::UInt64> time_step) const {
/// Figure out how to access the particle list
// auto& p = particles.at(i);
/// Iterate over the grid bounds
// auto& grid = p.template get<"grid">();
auto& part_spheroid_group = part_groups.template get<0>();
{
auto& parts = part_spheroid_group.template get<"particles">();
auto parts_size = parts.size();
auto& pi = parts.at(index);
auto& pirb = pi.template get<"rigid_body">();
auto& pirb_pos = pirb.template get<"position">();
saw::data<sch::FixedArray<sch::UInt64,Desc::D>> start;
saw::data<sch::FixedArray<sch::UInt64,Desc::D>> stop;
/// Ok, I iterate over the space which covers our particle? So lower bounds to upper bounds
for(uint64_t i{0u}; i < Desc::D; ++i){
}
iterator<Desc::D>::apply([&](const auto& index){
// ask for the d_k value here.
// For every value im iterating over I need sth
},start,stop);
// Check
}
}
};
}
}
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