id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
5275	Backend issues with ThermalSeparation library	Per Östlund		"Most of the ThermalSeparation library now flattens using the new frontend (`-d=newInst`), but the majority of the models fail in the backend due to various issues.

Most of the failing models gives errors such as (this one is from Examples.Absorption_IdealGases):
{{{
BackendDAEOptimize.makeEquationToResidualExp failed to transform equation: column1.balanceEquations.bool_eps[1] = false to residual form!
}}}
and seem to finally fail completely with the error:
{{{
Internal error function createNonlinearResidualEquations failed
}}}

The library can be found at: https://github.com/adrpo/ThermalSeparation
The current status of the library can be found at: https://libraries.openmodelica.org/branches/newInst/ThermalSeparation/ThermalSeparation.html

"	defect	new	normal	Future	Backend	v1.14.0-dev-nightly			Willi Braun Karim Adbdelhak