Search found 136 matches

by Ruonan
Fri Jun 23, 2023 8:05 pm
Forum: code_saturne usage
Topic: Turbomachinery cascade: rotor stator interface + rotational periodic
Replies: 1
Views: 2800

Turbomachinery cascade: rotor stator interface + rotational periodic

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 wo...
by Ruonan
Mon Mar 27, 2023 4:21 pm
Forum: code_saturne usage
Topic: Save data on a 2D slice rather than the whole domain
Replies: 1
Views: 3168

Save data on a 2D slice rather than the whole domain

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 su...
by Ruonan
Fri Oct 21, 2022 1:23 pm
Forum: code_saturne usage
Topic: Monitor the integration of a boundary variable
Replies: 2
Views: 3544

Monitor the integration of a boundary variable

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 examples ...
by Ruonan
Fri May 06, 2022 6:31 pm
Forum: code_saturne usage
Topic: Calculation is stuck but no error reported on a cluster
Replies: 7
Views: 9952

Re: Calculation is stuck but no error reported on a cluster

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 th...
by Ruonan
Thu Apr 28, 2022 10:22 pm
Forum: code_saturne usage
Topic: Calculation is stuck but no error reported on a cluster
Replies: 7
Views: 9952

Re: Calculation is stuck but no error reported on a cluster

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 was...
by Ruonan
Thu Apr 28, 2022 4:52 pm
Forum: code_saturne usage
Topic: Density in the governing equations
Replies: 1
Views: 2530

Density in the governing equations

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}\cdot\vec...
by Ruonan
Tue Apr 12, 2022 11:32 am
Forum: code_saturne usage
Topic: Calculation is stuck but no error reported on a cluster
Replies: 7
Views: 9952

Re: Calculation is stuck but no error reported on a cluster

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 ope...
by Ruonan
Mon Apr 11, 2022 12:39 pm
Forum: code_saturne usage
Topic: Calculation is stuck but no error reported on a cluster
Replies: 7
Views: 9952

Calculation is stuck but no error reported on a cluster

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 ...
by Ruonan
Sun Apr 10, 2022 7:42 pm
Forum: code_saturne usage
Topic: Different results from stationary and rotating frame
Replies: 7
Views: 7186

Re: Different results from stationary and rotating frame

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
by Ruonan
Sat Apr 02, 2022 3:15 pm
Forum: code_saturne usage
Topic: Different results from stationary and rotating frame
Replies: 7
Views: 7186

Re: Different results from stationary and rotating frame

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