CFD Online Discussion Forums

CFD Online Discussion Forums (
-   CFX (
-   -   Recirculation at rotating-stationary interfaces (

Vmax March 1, 2011 04:23

Recirculation at rotating-stationary interfaces
Hello everybody,
I'm performing a turbomachinery simulation using frozen rotor / stage interfaces, and at the interfaces there is a lot of recirculation (fluid going in and out the interface in opposite directions), as is supposed to be, due to the machine design. Furthermore there is no geometrical way to move the interfaces in order to avoid recirculation.
I've seen somewhere in the manuals that is not recommended to have recirculating flows through frozen rotor or stage interfaces, so in your opinion, should I revert to a moving mesh in order to obtain an accurate solution?

ghorrocks March 1, 2011 18:24

No. Use the transient rotor/stator approach so you can resolve the recirculation throughout the cycle. This is still a MFR approach.

manoj_1 March 1, 2011 23:34

Dear G. Horrocks,
for transient rotor/stator approach one needs results file of frozen rotor/sator interface, and with recirculation in frozen interface, solution does not converge easily.
Pls. comment.

All times are GMT -4. The time now is 03:52.