From 2ac145b3bb6d2de3887ab08e0cf26423b5e6c5ee Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Wed, 25 Feb 2026 20:33:36 +0100
Subject: Changes to run, reworking meta reporting for easier estimation of
 runtime parameters

---
 lib/core/c++/converter.hpp |  8 ++++++++
 lib/core/c++/lbm.hpp       | 24 +++++++++++++++++++++---
 2 files changed, 29 insertions(+), 3 deletions(-)

(limited to 'lib/core')

diff --git a/lib/core/c++/converter.hpp b/lib/core/c++/converter.hpp
index 5c19c68..4370a2c 100644
--- a/lib/core/c++/converter.hpp
+++ b/lib/core/c++/converter.hpp
@@ -50,6 +50,14 @@ public:
 		return second_conv_*saw::data<sch::LbmSecond<T>>{1.0};
 	}
 
+	auto delta_v() const {
+		return (meter_conv_ / second_conv_) * saw::data<sch::LbmVelocity<T>>{1.0};
+	}
+	
+	auto delta_a() const {
+		return (meter_conv_ / (second_conv_*second_conv_)) * saw::data<sch::LbmAcceleration<T>>{1.0};
+	}
+
 	saw::data<sch::LbmMeter<T>> meter_si_to_lbm(const saw::data<sch::SiMeter<T>>& m_si) const {
 		return m_si / meter_conv_;
 	}
diff --git a/lib/core/c++/lbm.hpp b/lib/core/c++/lbm.hpp
index 27a7df3..a1e088e 100644
--- a/lib/core/c++/lbm.hpp
+++ b/lib/core/c++/lbm.hpp
@@ -26,15 +26,33 @@
 namespace kel {
 namespace lbm {
 template<typename T, typename Desc>
-void print_lbm_meta(const converter<T>& conv, const saw::data<sch::SiKinematicViscosity<T>>& kin_vis_si){
+void print_lbm_meta(
+		const converter<T>& conv,
+		const saw::data<sch::SiKinematicViscosity<T>>& kin_vis_si,
+		const saw::data<sch::SiVelocity<T>>& char_vel,
+		const saw::data<sch::SiMeter<T>>& char_len
+){
 	std::cout
-		<<"[LBM Meta]\n"
-		<<"==========\n"
+		<<"[Meta]\n"
+		<<"======\n"
+		<<"Re:     "<<(char_vel * char_len / kin_vis_si)<<"\n"
+		<<"Ma:     "<<(char_vel * saw::data<typename saw::unit_division<sch::Pure<T>, sch::SiVelocity<T>>::Schema>{std::sqrt(df_info<T,Desc>::inv_cs2)})<<"\n"
 		<<"\n"
+		<<"[SI]\n"
+		<<"====\n"
 		<<"Δx:     "<<conv.delta_x()<<"\n"
 		<<"Δt:     "<<conv.delta_t()<<"\n"
+		<<"Δv:     "<<conv.delta_v()<<"\n"
+		<<"Δa:     "<<conv.delta_a()<<"\n"
 		<<"KinVis: "<<kin_vis_si<<"\n"
+		<<"CharV:  "<<char_vel<<"\n"
+		<<"CharL:  "<<char_len<<"\n"
+		<<"\n"
+		<<"[LBM]\n"
+		<<"=====\n"
+		<<"KinVis: "<<conv.kinematic_viscosity_si_to_lbm(kin_vis_si)<<"\n"
 		<<"τ:      "<<(saw::data<typename saw::unit_division<sch::Pure<T>, sch::LbmKinematicViscosity<T>>::Schema >{df_info<T,Desc>::inv_cs2} * conv.kinematic_viscosity_si_to_lbm(kin_vis_si) + saw::data<sch::Pure<T>>{0.5})<<"\n"
+		<<std::endl
 	;
 }
 }
-- 
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