From 2b153a0e0263e5a76550b15382e2609f7b5a5d41 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Mon, 24 Aug 2026 17:15:52 +0200
Subject: Stuff

---
 examples/schaefer_turek_durst_krause_rannbacher/sim.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'examples/schaefer_turek_durst_krause_rannbacher')

diff --git a/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp b/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp
index b9b3778..4d015c9 100644
--- a/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp
+++ b/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp
@@ -144,7 +144,7 @@ saw::error_or<void> lbm_main(const saw::data<args::LbmArgs>& args){
 				}
 			}
 			{
-				auto eov = write_csv_file(out_dir,"stdkr_2d",i.get(), *lbm_macro_data_ptr);
+				auto eov = write_vtk_file(out_dir,std::string{"stdkr_2d_"}+an.template get<"coupling">().stl_string(),i.get(), *lbm_macro_data_ptr);
 				if(eov.is_error()){
 					return eov;
 				}
@@ -189,7 +189,12 @@ saw::error_or<void> lbm_main(const saw::data<args::LbmArgs>& args){
 			return eov;
 		}
 	}
-
+	{
+		auto eov = write_csv_file(out_dir,"stdkr_2d",time_steps.get(), *lbm_macro_data_ptr);
+		if(eov.is_error()){
+			return eov;
+		}
+	}
 	sycl_q.wait();
 	return saw::make_void();
 }
-- 
cgit v1.2.3


From f5d88c1ae8948724f11d30c1c2af385cc093eed2 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Mon, 24 Aug 2026 19:02:51 +0200
Subject: Fixing FpLBM, because I messed up guo forcing

---
 .../schaefer_turek_durst_krause_rannbacher/sim.cpp |  2 +-
 .../step.hpp                                       | 23 ++++++++++++++++------
 2 files changed, 18 insertions(+), 7 deletions(-)

(limited to 'examples/schaefer_turek_durst_krause_rannbacher')

diff --git a/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp b/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp
index 4d015c9..ff6a43a 100644
--- a/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp
+++ b/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp
@@ -48,7 +48,7 @@ saw::error_or<void> lbm_main(const saw::data<args::LbmArgs>& args){
 		// delta_x
 		{{0.41 / dim_y}},
 		// delta_t
-		{{1.067e-4}}
+		{{1.067e-4 * 0.5}}
 	};
 	
 	print_lbm_meta<T,Desc>(conv,{1e-3},{1e-4},{0.5 * dim_y});
diff --git a/examples/schaefer_turek_durst_krause_rannbacher/step.hpp b/examples/schaefer_turek_durst_krause_rannbacher/step.hpp
index cbdfd10..9748ec8 100644
--- a/examples/schaefer_turek_durst_krause_rannbacher/step.hpp
+++ b/examples/schaefer_turek_durst_krause_rannbacher/step.hpp
@@ -8,6 +8,7 @@ namespace lbm {
 template<typename T, typename Desc, typename Coll>
 saw::error_or<void> step(
 		const converter<T>& conv,
+		const saw::data<sch::Scalar<T>>& tau,
 		saw::data<sch::Ptr<sch::ChunkStruct<T,Desc>>,encode::Sycl<saw::encode::Native>>& fields,
 		saw::data<sch::Ptr<sch::MacroStruct<T,Desc>>,encode::Sycl<saw::encode::Native>>& macros,
 		saw::data<sch::Ptr<sch::ParticleSpheroidGroup<T,Desc>>,encode::Sycl<saw::encode::Native>>& particles,
@@ -48,7 +49,7 @@ saw::error_or<void> step(
 		}).wait();
 
 		q.submit([&](acpp::sycl::handler& h){
-			component<T,Desc,cmpt::Hlbm,encode::Sycl<saw::encode::Native>> collision{1.0};
+			component<T,Desc,cmpt::Hlbm,encode::Sycl<saw::encode::Native>> collision{0.75};
 			component<T,Desc,cmpt::BounceBack,encode::Sycl<saw::encode::Native>> bb;
 			component<T,Desc,cmpt::ZouHeHorizontal<false>,encode::Sycl<saw::encode::Native>> flow_out{1.0};
 
@@ -74,9 +75,19 @@ saw::error_or<void> step(
 							component<T,Desc,cmpt::ZouHeVelocityX<true>,encode::Sycl<saw::encode::Native>> flow_in{
 								[&]() -> saw::data<sch::Vector<T,Desc::D>> {
 									saw::data<sch::Vector<T,Desc::D>> vel;
+									saw::data<T> scale;
+									{
+										scale.set([&](){
+											if(t_i.get() > 2048u){
+												return 1.0f;
+											}
+
+											return t_i.get() / 2048.0f;
+										}());
+									}
 									{
 										auto y_si = conv.meter_lbm_to_si(index.at({{1u}}).template cast_to<T>()).handle();
-										vel.at({{0u}}) = conv.velocity_si_to_lbm({{static_cast<typename saw::native_data_type<T>::type>((1.2 / 0.41) * y_si.get() - (1.2 / (0.41*0.41)) * y_si.get() * y_si.get())}}).handle();
+										vel.at({{0u}}) = conv.velocity_si_to_lbm({{static_cast<typename saw::native_data_type<T>::type>((1.2 / 0.41) * y_si.get() - (1.2 / (0.41*0.41)) * y_si.get() * y_si.get())}}).handle() * scale;
 										vel.at({{1u}}) = 0.0f;
 									}
 									return vel;
@@ -123,8 +134,8 @@ saw::error_or<void> step(
 
 		// auto coll_ev = 
 		q.submit([&](acpp::sycl::handler& h){
-			component<T,Desc,cmpt::BGK,encode::Sycl<saw::encode::Native>> bgk{1.0};
-			component<T,Desc,cmpt::FpLbm,encode::Sycl<saw::encode::Native>> collision{1.0};
+			component<T,Desc,cmpt::BGK,encode::Sycl<saw::encode::Native>> bgk{0.75};
+			component<T,Desc,cmpt::FpLbm,encode::Sycl<saw::encode::Native>> collision{0.75};
 			component<T,Desc,cmpt::BounceBack,encode::Sycl<saw::encode::Native>> bb;
 			component<T,Desc,cmpt::ZouHeHorizontal<false>,encode::Sycl<saw::encode::Native>> flow_out{1.0};
 
@@ -199,8 +210,8 @@ saw::error_or<void> step(
 
 		// auto coll_ev = 
 		q.submit([&](acpp::sycl::handler& h){
-			component<T,Desc,cmpt::BGK,encode::Sycl<saw::encode::Native>> bgk{1.0};
-			component<T,Desc,cmpt::Psm,encode::Sycl<saw::encode::Native>> collision{1.0};
+			component<T,Desc,cmpt::BGK,encode::Sycl<saw::encode::Native>> bgk{0.75};
+			component<T,Desc,cmpt::Psm,encode::Sycl<saw::encode::Native>> collision{0.75};
 			component<T,Desc,cmpt::BounceBack,encode::Sycl<saw::encode::Native>> bb;
 			component<T,Desc,cmpt::ZouHeHorizontal<false>,encode::Sycl<saw::encode::Native>> flow_out{1.0};
 
-- 
cgit v1.2.3


From 76dea4c1035bf063802ca0cc650d69aef8047b9f Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Mon, 24 Aug 2026 19:19:45 +0200
Subject: Fixing examples

---
 examples/schaefer_turek_durst_krause_rannbacher/sim.cpp  | 4 +++-
 examples/schaefer_turek_durst_krause_rannbacher/step.hpp | 7 ++-----
 2 files changed, 5 insertions(+), 6 deletions(-)

(limited to 'examples/schaefer_turek_durst_krause_rannbacher')

diff --git a/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp b/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp
index ff6a43a..59f61d9 100644
--- a/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp
+++ b/examples/schaefer_turek_durst_krause_rannbacher/sim.cpp
@@ -122,7 +122,7 @@ saw::error_or<void> lbm_main(const saw::data<args::LbmArgs>& args){
 	auto lsdm_view = make_view(lbm_sycl_macro_data);
 	auto lsdp_view = make_view(lbm_sycl_particle_data);
 	
-	saw::data<sch::UInt64> time_steps{64u*1024ul};
+	saw::data<sch::UInt64> time_steps{128u*1024ul};
 
 	auto& info_f = lsd_view.template get<"info">();
 
@@ -136,6 +136,7 @@ saw::error_or<void> lbm_main(const saw::data<args::LbmArgs>& args){
 		}
 
 		sycl_q.wait();
+		/*
 		if(i.get() % 64u == 0u){
 			{
 				auto eov = dev.copy_to_host(lbm_sycl_macro_data,*lbm_macro_data_ptr);
@@ -150,6 +151,7 @@ saw::error_or<void> lbm_main(const saw::data<args::LbmArgs>& args){
 				}
 			}
 		}
+		*/
 		// Stream
 		sycl_q.submit([&](acpp::sycl::handler& h){
 			component<T,Desc,cmpt::Stream,encode::Sycl<saw::encode::Native>> stream;
diff --git a/examples/schaefer_turek_durst_krause_rannbacher/step.hpp b/examples/schaefer_turek_durst_krause_rannbacher/step.hpp
index 9748ec8..beb123b 100644
--- a/examples/schaefer_turek_durst_krause_rannbacher/step.hpp
+++ b/examples/schaefer_turek_durst_krause_rannbacher/step.hpp
@@ -8,7 +8,6 @@ namespace lbm {
 template<typename T, typename Desc, typename Coll>
 saw::error_or<void> step(
 		const converter<T>& conv,
-		const saw::data<sch::Scalar<T>>& tau,
 		saw::data<sch::Ptr<sch::ChunkStruct<T,Desc>>,encode::Sycl<saw::encode::Native>>& fields,
 		saw::data<sch::Ptr<sch::MacroStruct<T,Desc>>,encode::Sycl<saw::encode::Native>>& macros,
 		saw::data<sch::Ptr<sch::ParticleSpheroidGroup<T,Desc>>,encode::Sycl<saw::encode::Native>>& particles,
@@ -20,8 +19,6 @@ saw::error_or<void> step(
 	auto& q = dev.get_handle();
 	auto& info_f = fields.template get<"info">();
 	auto& porous_f = macros.template get<"porosity">();
-
-
 	
 	if constexpr ( std::is_same_v<Coll, method::Hlbm> ){
 		q.submit([&](acpp::sycl::handler& h){
@@ -78,11 +75,11 @@ saw::error_or<void> step(
 									saw::data<T> scale;
 									{
 										scale.set([&](){
-											if(t_i.get() > 2048u){
+											if(t_i.get() > 1024u){
 												return 1.0f;
 											}
 
-											return t_i.get() / 2048.0f;
+											return t_i.get() / 1024.0f;
 										}());
 									}
 									{
-- 
cgit v1.2.3