code_saturne User's Forum

Dear developers,

Hello. I would like to do LES on a turbomachinery cascade, demonstrated in the figure below. There will be two domains: the front one is a stationary domain (including the stationary vane), the rear one is a rotating domain (including a rotating blade). For the rotating domain, I ...

Dear experts,

Hello. I'm using version 7.0, trying to use LES data on a 2D slice to do Proper Orthogonal Decomposition. But since I need data of many timesteps, the disc space requirement is huge. So I want to save results only on one slice, rather than save results in the whole domain. Could you ...

Dear Code_Saturne experts,

Hello. In the calculation, I understand how to monitor the variables at a point in the fluid domain. Now I'm trying to monitor the integration of thermal flux on a boundary wall. Could you please guide me on how to do this?

I really appreciate it if there are any ...

Hello Yvan,

Thank you very much for your reply!

Today I had a look at this issue with my cluster administrator. He did a "hello world" test before and there was no problem.

I did ldd and copied the results below. I have added "xxx" at three lines related to mpi so you can find them easier. It ...

Hello Yvan,

Thank you very much for your help. I'm following your suggestions, made some progress, but still haven't fixed this problem.

I changed to a new cluster with AMD EPYC 7452 32-Core Processors. Each node has 64 processors.

I first compiled Code_Saturne using MPICH/3.4.2. The compilation ...

Dear developers,

Could you please help to confirm the form of the momentum equation in Code_Saturne?

\frac{\partial\vec{u}}{\partial t}+\vec{u}\cdot\vec{\nabla}\vec{u}=-\frac{\vec{\nabla}P}{\rho_0}+{\upsilon}\vec{\nabla}^2\vec{u}

or

{\rho_0}\frac{\partial\vec{u}}{\partial t}+{\rho_0}\vec{u ...

Hello Yvan,

Thanks for your reply! I'm sorry for my unclear post.

Yes, you are right. I was assigned 3 nodes. I set whether to use 1 node or 3 nodes in the run.cfg. The snippet is from using 1 node, which the case can run with no problem. But when I use 3 nodes, the case hung on, and didn't even ...

Dear developers,

I got an error when running on the cluster. Could you please have a look if you have any ideas/experience?

I'm using version 7.1.0-patch. I have 3 nodes, each node has 20 processors. I set "n_procs:60 n_threads:1", which succeed before. But now, the simulation seems to be stuck ...

Hello Yvan,

I tried version 7.1.0-patch, the case can restart without error. I don't know why, but I can use v7.1.0-patch at this moment.

Thank you very much for your great help!

Best regards,
Ruonan

Hello Yvan,

Thank you! I tried two versions, v7.0.4 and v7.1.1, but both failed. It seems I do have this restarting error, on both my local laptop and HPC cluster.

Please find the listing files attached below. It will be great if you could have a look.

Many thanks,
Ruonan