id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
3883	Modelica.Fluid.Examples.Explanatory.MomentumBalanceFittings	Volker Waurich		"Hi,

A non-linear system does not converge during initialization.
The problem is as follow:
One residual in simcode equation 50 is computed as: 
{{{res = rightAdaptor.A_mean * rightAdaptor.dp_fg + rightAdaptor.F_p}}}

If I set almost correct start values (according to dymola) 
The numerical values for this residual are:
3.92699e+119 * -6.53663e+002 + 2.56825e+122

If you look at the mantissas, this seems to be on the right way. But I guess multiplying such a big and small number reveals some numerical issues.
"	discussion	new	normal	Future	Run-time				Willi Braun Vitalij Ruge