[Pifpoffele]

Hi everybody,

I am performing a steady state analysis including stationary domains and one rotating domain in between (general connection, frozen rotor, GGI).

Now I want to insert tracer gas at one inlet and measure the tracer gas concentration at each outlet, the tracer gas has to move through the rotating domain.

I tried to do this by additional variables, but it failed because the additional variables follow the streamline "Velocity" and not "Velocity in Stn Frame". I didn't find a way to change that, and so the additional variable has a wrong value after passing the rotating domain.
If I implement the tracer gas by particle tracking I have the same problem, I already tried to change the expert parameter "pt tracks in absolute frame" to "true" but the problem stays the same.
Do you have any suggestions oder solutions for that problem?

I would be glad if you can help me,
best regards
Christoph

[ghorrocks]

Additional variables should track correctly in both stationary and rotating frames of reference. Your comment sounds strange.

Can you post your CCL and some images of what you are modelling, and some images which show the problem?

[Pifpoffele]

The ccl file and an image of the simulation result is atached.

The left one is with streamlines (velocity), the right one with streamlines (velocity in stn frame). The colored plane shows the additional variable (range 0-1). In my opinion the additional variable is exactly following the streamlines (velocity) in the rotational domain or am I wrong?

Thank you so far.