code_saturne User's Forum

Hello, The result I calculated with Max CFL=5 and Max Fo=50 is too bad. So I reconsidered this question carefully. CFL=U*Dt/Dx with U is with U is characteristic velocity, Dx is characteristic length. Fo=v*Dt/Dx^2 with v is viscosity, Dx is characteristic length. I am not very clear about the charac...

Hello Luciano, Thank you very much, because the temperature has been stable, it has not changed with the time step. so I thought the calculation of 16000 steps is enough, and I thought they are the same 'instant'. After your reminder, I understand. But I can not calculate more steps, and this will w...

Hello Yvan, I can confirm that has no effect on heat exchange, I have calculated one with sliding wall, the result is still no heat exchange。 Is it possible to explain this because the mesh is refined and the boundary layer is added? They lead to no heat exchange. You carefully observe the first pic...

Hello Yvan,

I am so sorry, It's my problem, you just reminded me, I was just aware of this problem and I was using the runcase of version 4.0.6, I forgot to create a new case with version 5. Now it's no problem.

Thank you very much

Best Regards

XING Jian

Hello Yvan, Here are the XML files, most of their settings are the same, only a small part is different. And the setting of the Periodic Boundary of my test model is wrong because it is a test. Another point, the biggest difference is that the mesh of the test model is very rough, and I do not have ...

Hello Yvan, Thank you so much, this time averages is very helpful to my situation, I never thought about it before, thank you. Just like my results of calculations, after calculating a thousand steps, all the variables of the monitoring points fluctuate in their respective regions, and the start of ...

Hello Yvan,

I am sorry I don't know how to run it from a terminal, but I tried double-click on the file runcase in the file of SCRIPTS, only one black window flashed，then nothing happened.

Thank you very much

Best Regards

XING Jian

Hello Yvan, I'm sorry I did not say it clearly. I'm talking about the question I asked on the second page. Like I have a fluctuating flow, I can only treat it as it is convergence, and you said it may be useful to define time averages for postprocessing, could you remind me how to define time averag...

Hello Yvan,

I am sorry about that, I have uninstalled version 4 when I installed version 5.

I run it from GUI, I am sorry that I don't know how to run it from SCRIPTS/runcase.bat. How to do it? Please teach me...

Thank you very much

Best Regards

XING Jian

Hello Yvan,

I have moved it to the installation page, and could you please answer the question I mentioned earlier?

Best Regards

XING Jian