code_saturne User's Forum

Hello,

I'm trying to do a simple case using The frozen rotor model or full transient model and also use periodic boundaries. I created 2 cylinders and divided each of them into 10 pieces. So one piece would be the fixed part and one the rotational part. With full geometry I have no errors when I use The frozen rotor or full transient model, but when I try to use periodic boundaries I get this error: SIGSEGV signal (forbidden memory area access) intercepted!
I was reading in an older post from 2015 that it is not possible to run a turbomachinery model (eg. modelling only one part of the runner/guide vanes) and use periodic boundaries. Is it still not possible or am I doing something wrong?
Attached you will find the 2 meshes and case files. I'm using version 5.0.

Best regards,
Robert

Hello,

There have been no recent changes on this feature, so the 2015 limitation still holds.

Depending on whether the periodic faces are adjacent or disjoint from the rotor/stator joining faces, a relatively simple change in the code could fix or issue or much more Would be needed. In any case it should stop more cleanly than a SIGSEGV so I'll check this in a few days (maybe not immediately, as the next two weeks are aleeady very busy).

Best regards,

Yvan

Thank you for the answer, I will wait for you to check it. About the small change in code, do you mean there could be an update or is it something I could do on my own (if so, could you give me few hints about where should I look, I'm not that much into programming)?

Regards,
Robert