[jeronimoguarco]

Hello,

I'm modelling a CSTR (see attached image) through the MRF approach. For this purpose I created a cylindrical volume around the impeller to which I assign an angular speed of 100 rpm. The rest of the reactor is left as static and there are no baffles.

What I'm most concerned about it's the solution I get, which I also uploaded as a picture here. You can observe there is a big change in the velocity profiles from the static and the rotating frames and there is no smooth transition. Is this correct?. When I plot this in "Stn Frame" I get another plot which is what I would expect (also attached).

Another concern of mine are some surfaces and regions (wall-13, wall-14 and interior-8) which I'm not sure what they are. I attached a picture in which I show them in FLUENT. I try to display them and they appear to be nothing. All other surfaces I displayed corresponded correctly. What do you think these are and are they a problem?

Thanks in advance!

Jerónimo