code_saturne User's Forum

Hello, I have CS 8.0 and Syrthes 5.0 running coupling problems in Ubuntu 22, without issue. I need to set up a second system, which is Ubuntu 20. After reinstalling a couple of times, following the steps that worked on my Ubuntu 22 system, I still get an error. CS gui runs fine. Syrthes gui runs fin...

Great, thank you. I will try that.

From your comments, it sounds like the total steps and step size need to be the same only for transient problems.
Much appreciated.

Hello, I have a CS 8.03 / Syrthes 5.0 coupled thermal problem. The coupled solution is very slow. -About 300k cells -The solid problem solves in ~10 seconds in Syrthes, 1 core -The fluid problem solves in ~60 seconds in CS, 1 core -The coupled problem, CS - Syrthes will not stabilize, after even 3+ ...

After looking further at different types of mesh, it looks like with improved mesh quality I can get it to not diverge. It oscillates after residuals drop about 1.5 decades.. Perhaps pinning a point at a fixed reference pressure will allow further stability and convergence(?).

Hello, I am using CS 8.03 in Ubuntu 22. I am modeling MHD driven flow in a closed loop. This loop has a small region where the MHD pumping effects are simulated by using a momentum term. In the image, the red region is the pump region, and the blue is the rest of the loop pipe. https://en.wikipedia....

That was probably the issue.

I reinstalled completely. I ran through the tutorial again, and it did solve.
Thanks

Hello, I am very interested in Code_Saturne/Syrthes, and have used OpenFoam in the past... Ubuntu 22, Code_Saturne 8.03 Syrthes tutorials and my own Syrthes cases work without issue. When running the Code_Saturne tutorials, after starting the solver from the Gui, I get the following in the run_solve...