Set use_eps_Re=true and changed m_flow_nominal from 1 to 1e-2 kg/s, which is closer to the actual volume flow rate. With m_flow_nominal = 1, the computing time was 200 seconds and numerical noise was considerable. With the new setting, computing time is 3 seconds and the noise is much smaller.

git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@5926 7ce873d0-865f-4ce7-a662-4bb36ea78beb