In the release notes of OM 1.7.0 you wrote:
“The OpenModelica 1.7.0 ALPHA has some issues simulating some examples from MSL 3.1!
We are working on fixing these issues in the next weeks for a BETA release. “

I'm working with Modelica.Thermal models of the Modelica Standard  Library.

I would like to know if the above-mentioned problems concern the examples of  Modelica.Thermal ?

I noticed that the simulation of this examples had been improved in the latest nightly builds 1.7.0.BETA.

I tested some examples of Modelica.Thermal.FluidHeatFlow and checked the plausibility of the results.
I also checked the equations in the models and they seem to be okay.

e.g : Provided I understood  the definitions correctly, the results should  look like this : 
if “flowPort_b.m_flow < 0” ( massflow is leaving the connector) then  should be “flowPort_b.h = h”

In the results of the examples with OM 1.7.0: 
if “flowPort_b.m_flow” < 0  then “flowPort_b.h”  becomes equal to  “ - h “

I'm wondering if it's my fault or if it is a problem with OM ?

From week to week Open Modelica is getting better and better. Thanks a lot to everybody , who is working on it.
Good luck.

Best regards.


  (P.S: I don't have  the results of another tool to compare them with OM . For explanations about port definitions I also looked at chapter 2.2 and 2.3 of the following paper. The notation is a little bit different but the principle is the same. :   Elmqvist, H., Tummescheit H., and Otter M.( 2003). Object-Oriented Modeling of Thermo-Fluid Systems. Proceedings of 3 rd  Int. Modelica Conference, Linköping, Sweden, ed. P. Fritzson, pp. 269-286.  )