id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
6366	"Function ""kc_roundTube_KC"" at Modelica.Fluid.Dissipation.HeatTransfer.HeatExchanger.kc_roundTube_KC"	anonymous	Adeel Asghar	"Dear OM-team,

if I run the function ""kc_roundTube_KC"" with valid values for IN_con.geometry == TYP.WavyFin, I get following error: 
""[...] functions.c:3623: Invalid root: (1.#INF)^(0.122917)
Simulation process failed. Exited with code -1.""


The bug can be fix if the variable SI.ReynoldsNumber Re_Dc are not calculated at the beginn but in the algorithm part


suggestion: 

Line 1300                     
SI.ReynoldsNumber Re_Dc ""Reynolds number based on fin collar diameter"";

Between Line 1332 and 1333    
Re_Dc := max(MIN, abs(IN_var.m_flow) * IN_con.D_c / (IN_var.eta * A_c));

many regards
Chris"	defect	closed	high	NeedsInput	OMEdit	1.16.1	wontfix