Mass flow through cyclic boundary face
Hi
I am simulation a section of a combustor using cyclic BC. When I was calculating mass balance and energy balance I realized that the mass flow through the cyclic boundary faces does not cancel as it should (or shouldnt??). Can somebody shed me some light on this issue? THX Jose |
I have a faint memory of someone telling me this patch integration is not parallel (the cyclic patch crosses processor boundaries). If you have the possibility, you could try to do this on a single machine to find out if that works...
As said, a faint memory, but might be worth to check. Regards, Kalle |
Hi!
Thanks for your reply! I solved the problem and here is how: In the configuration I had before, I had set the cyclic patch manually in the constant/polyMesh/boundary, changing the patch type from wall to cyclic as follows (I first exported my mesh from gambit and then coupled the 2 faces with createPatch utility): Cyclic { type cyclic; nFaces 29022; startFace 775347; transform rotational; rotationAxis ( 0 0 1 ); rotationCentre ( 0 -0.04 0 ); } Then, if I eliminate the transformation entries ("transform", "rotationAxis" and "rotationCentre"), OF configures the patch automatically and now the mass balance is correct as it should be, SOLVING THE PROBLEM. Anyway, I still dont understand what this parameters mean/do (I though I knew before :( ). I intend to look at the source for their meaning. However if somebody has a hint or answer ready to write here, it would be most appreciated. Regards José |
All times are GMT -4. The time now is 17:02. |