Merge branch 'dev'HEADmaster

1 files changed, 122 insertions, 0 deletions

diff --git a/examples/poiseulle_particles_2d_gpu/init.hpp b/examples/poiseulle_particles_2d_gpu/init.hpp
new file mode 100644
index 0000000..70d59fc
--- /dev/null
+++ b/examples/poiseulle_particles_2d_gpu/init.hpp
@@ -0,0 +1,122 @@
+#pragma once
+
+#include "common.hpp"
+
+namespace kel {
+namespace lbm {
+
+template<typename T, typename Desc>
+saw::error_or<void> setup_initial_conditions(
+		saw::data<sch::ChunkStruct<T,Desc>>& fields,
+		saw::data<sch::MacroStruct<T,Desc>>& macros,
+		saw::data<sch::ParticleSpheroidGroup<T,Desc>>& particles
+){
+	auto& info_f = fields.template get<"info">();
+	auto& porous_f = macros.template get<"porosity">();
+	// Set everything as walls
+	iterator<Desc::D>::apply(
+		[&](auto& index){
+			info_f.at(index).set(1u);
+		},
+		{},
+		info_f.get_dims(),
+		{}
+	);
+	// Fluid
+	iterator<Desc::D>::apply(
+		[&](auto& index){
+			info_f.at(index).set(2u);
+		},
+		{},
+		info_f.get_dims(),
+		{{1u,1u}}
+	);
+	
+	// Inflow
+	iterator<Desc::D>::apply(
+		[&](auto& index){
+			info_f.at(index).set(3u);
+		},
+		{{0u,0u}},
+		{{1u,dim_y}},
+		{{0u,1u}}
+	);
+	
+	// Outflow
+	iterator<Desc::D>::apply(
+		[&](auto& index){
+			info_f.at(index).set(4u);
+		},
+		{{dim_x-1u,0u}},
+		{{dim_x, dim_y}},
+		{{0u,1u}}
+	);
+	//
+	auto& df_f = fields.template get<"dfs_old">();
+	auto& rho_f = macros.template get<"density">();
+	auto& vel_f = macros.template get<"velocity">();
+	auto& por_f = macros.template get<"porosity">();
+	
+	iterator<Desc::D>::apply(
+		[&](auto& index){
+			auto& df = df_f.at(index);
+			auto& rho = rho_f.at(index);
+			por_f.at(index).at({}) = {1};
+			rho.at({}) = {1};
+			auto& vel = vel_f.at(index);
+			auto eq = equilibrium<T,Desc>(rho,vel);
+
+			df = eq;
+		},
+		{},// 0-index
+		df_f.get_dims()
+	);
+
+	iterator<Desc::D>::apply(
+		[&](auto& index){
+			auto& df = df_f.at(index);
+			auto& rho = rho_f.at(index);
+			rho.at({}) = {1};
+			auto& vel = vel_f.at(index);
+			if(info_f.at(index).get() == 2u){
+				vel.at({{0u}}) = 0.0;
+			}
+			auto eq = equilibrium<T,Desc>(rho,vel);
+
+			df = eq;
+		},
+		{},// 0-index
+		df_f.get_dims(),
+		{{1u,1u}}
+	);
+	
+	iterator<Desc::D>::apply(
+		[&](auto& index){
+			saw::data<sch::Vector<T,Desc::D>> middle, ind_vec;
+			middle.at({{0u}}) = dim_x * 0.25;
+			middle.at({{1u}}) = dim_y * 0.5;
+
+			ind_vec.at({{0u}}) = index.at({{0u}}).template cast_to<T>();
+			ind_vec.at({{1u}}) = index.at({{1u}}).template cast_to<T>();
+
+			auto dist = middle - ind_vec;
+			auto dist_2 = saw::math::dot(dist,dist);
+			if(dist_2.at({}).get() < dim_y*dim_y*0.01){
+				porous_f.at(index).at({}) = 0.0;
+			}
+		},
+		{},// 0-index
+		df_f.get_dims()
+	);
+
+	{
+		saw::data<sch::Scalar<T>> dense_p;
+		dense_p.at({}).set(1);
+		particles = create_spheroid_particle_group<T,Desc::D,2.0f>(dense_p, {{16u}});
+	}
+
+	return saw::make_void();
+}
+
+}
+}