[jmf]

Dear all

I'm trying to set a rotating blade case, using MRFsimpleFoam and periodic cyclicAMI faces in OF 2.1.x

Everything works, except a weird behaviour of cycliAMI faces inside MRFzone : they seem to be partially connected, and generate rotating strips, localized near the surface ! Please see the different images.
At the contrary the cyclicAMI faces located outside the MRF zone operate properly

I've been sticked with this problem for a few days, and I would be grateful to anybody who would help me

The complete case is downloadable here : http://www.jmichel.cmoi.cc/?q=node/79
Just run ./allRun

Thanks in advance

Jean-Michel

[jmf]

Hi everybody

This is the direct shortcut to the case data :

http://www.jmichel.cmoi.cc/sites/jmi...BladeForum.zip

Best wishes

Jean-Michel

[linnemann]

Hi have you seen this?

http://www.openfoam.org/mantisbt/view.php?id=412

The reply from Andy about the nonRotating patches in the MRF dict.

[jmf]

Dear Linnemann

Many thanks for this answer, this line fixed the problem:

nonRotatingPatches (MRFcyclicTrail MRFcyclicLead);


You helped me a lot
Best wishes


Jean-Michel

[windmachines]

Adding the cyclicAMI patches to nonRotatingPatches() does not work for me. I am using OF2.2.2. My results are similar to the images posted here. After many different attempts i dont believe it is possible to use MRF in conjunction with cyclicAMI as periodic boundaries. I could be wrong, but i would say this is only possible with normal cyclic boundaries in 2.2.2

[windmachines]

This also seems impossible in OF2.3.0. Can anyone support my claim or possibly suggest how it can be done? Thanks

[jmf]

Dear Ash


You might check that you have this in system/decomposeParDict :

preservePatches(yourMRFcyclic0 yourMRFcyclic1);


Hope that helps


Jean-Michel

[maHein]

Could you provide a example test case, where it is not working?

I'm using cyclicAMI as cyclic boundaries in conjunction with MRF and everything worked so far using OpenFOAM 2.2.x and 2.3.x.

Regards,

Martin

[windmachines]

Martin and Jean-Michel,

thanks for you attention. I have started a another thread about this specific problem, with case and images attached:

http://www.cfd-online.com/Forums/ope...-mrf-zone.html

please let me know if you might have any insight.

thanks!

Ash