From 2bae8b93faf614b1acb5df7269087b4f3786da5a Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Tue, 30 Jun 2026 23:52:02 +0200
Subject: Final run

---
 examples/poiseulle_particles_2d_hlbm_gpu/sim.cpp | 47 +++++++++++-------------
 1 file changed, 22 insertions(+), 25 deletions(-)

(limited to 'examples/poiseulle_particles_2d_hlbm_gpu')

diff --git a/examples/poiseulle_particles_2d_hlbm_gpu/sim.cpp b/examples/poiseulle_particles_2d_hlbm_gpu/sim.cpp
index b09aa64..b1bd37d 100644
--- a/examples/poiseulle_particles_2d_hlbm_gpu/sim.cpp
+++ b/examples/poiseulle_particles_2d_hlbm_gpu/sim.cpp
@@ -48,6 +48,7 @@ template<typename T, typename Desc>
 using MacroStruct = Struct<
 	Member<VelChunk<T,Desc>, "velocity">,
 	Member<RhoChunk<T>, "density">,
+	Member<VelChunk<T,Desc>, "force">,
 	Member<ScalarChunk<T,Desc>, "porosity">
 >;
 
@@ -140,7 +141,8 @@ saw::error_or<void> setup_initial_conditions(
 		df_f.get_dims(),
 		{{1u,1u}}
 	);
-	
+
+	/*
 	iterator<Desc::D>::apply(
 		[&](auto& index){
 			saw::data<sch::Vector<T,Desc::D>> middle, ind_vec;
@@ -159,6 +161,7 @@ saw::error_or<void> setup_initial_conditions(
 		{},// 0-index
 		df_f.get_dims()
 	);
+	*/
 
 	return saw::make_void();
 }
@@ -176,16 +179,23 @@ saw::error_or<void> step(
 
 	// auto coll_ev = 
 	q.submit([&](acpp::sycl::handler& h){
-		component<T,Desc,cmpt::Hlbm,encode::Sycl<saw::encode::Native>> collision{0.65};
+		component<T,Desc,cmpt::BGK, encode::Sycl<saw::encode::Native>> bgk{0.8};
+		component<T,Desc,cmpt::Hlbm,encode::Sycl<saw::encode::Native>> collision{0.8};
 		component<T,Desc,cmpt::BounceBack,encode::Sycl<saw::encode::Native>> bb;
 		component<T,Desc,cmpt::AntiBounceBack<0u>,encode::Sycl<saw::encode::Native>> abb;
 
-		saw::data<sch::Scalar<T>> rho_b;
-		rho_b.at({}) = 1.0;
-		saw::data<sch::Vector<T,Desc::D>> vel_b;
-		vel_b.at({{0u}}) = 0.015;
-
-		component<T,Desc,cmpt::Equilibrium,encode::Sycl<saw::encode::Native>> equi{rho_b,vel_b};
+		saw::data<sch::Scalar<T>> eps;
+		eps.at({}).set(1.5f);
+		saw::data<sch::Scalar<T>> rad;
+		rad.at({}).set(dim_y*0.1);
+		saw::data<sch::Vector<T,Desc::D>> p_pos;
+		{
+			p_pos.at({{0u}}) = dim_x * 0.25;
+			p_pos.at({{1u}}) = dim_y * 0.5;
+		}
+		component<T,Desc,cmpt::OneParticleAt,encode::Sycl<saw::encode::Native>> opa{p_pos,rad,eps};
+		
+		component<T,Desc,cmpt::ForceGather, encode::Sycl<saw::encode::Native>> fg;
 
 		component<T,Desc,cmpt::ZouHeHorizontal<true>,encode::Sycl<saw::encode::Native>> flow_in{
 			[&](){
@@ -214,32 +224,19 @@ saw::error_or<void> step(
 					bb.apply(fields,index,t_i);
 				break;
 				case 2u:
+					opa.apply(macros,index,t_i);
 					collision.apply(fields,macros,index,t_i);
-					{
-						saw::data<sch::Vector<T,Desc::D>> middle;
-						middle.at({{0u}}) = dim_x * 0.25;
-						middle.at({{1u}}) = dim_y * 0.5;
-
-						saw::data<sch::Vector<T,Desc::D>> ind_vec;
-						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;
-						}
-					}
+					fg.apply(fields,macros,index,t_i);
 					break;
 				case 3u:
 					flow_in.apply(fields,index,t_i);
 					// equi.apply(fields,index,t_i);
-					collision.apply(fields,macros,index,t_i);
+					bgk.apply(fields,macros,index,t_i);
 					break;
 				case 4u:
 					flow_out.apply(fields,index,t_i);
 					// equi.apply(fields,index,t_i);
-					collision.apply(fields,macros,index,t_i);
+					bgk.apply(fields,macros,index,t_i);
 				break;
 				default:
 				break;
-- 
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