code_saturne User's Forum

Hi: Thank you. I solved my problem by refining the near wall mesh, it seems that k omega SST requires a fine near wall mesh. I have another problem, when I choose the turbulence model, there is 3 options of wall function, one scale and two scale wall function, what is the definition of these type of...

And this is my xml file of the code saturne case. Many thanks!

Hi engineers: I have a simple steady state simulation which is a annuli flow, with inlet on the top surface and outlet on the bottom. The outer wall is 300 degree C and the inner wall is 400 degree C. When I use k epsilon model, the result converge well in a short time. But when I switch the turbule...

Thank you so much. Now I can couple the two fluid face and then couple the two fluid domain with the solid domain. Thanks!!!

Hi Between the solid and fluid domain, like the normal coupling simulation, exchange the external temperature and the heat transfer coefficient. Between the fluid domain, I am going to exchange the velocity and the temperature, and also the heat flux through the shared face. Thank you! Best Regards!...

Hi: I have a coupling simulation which has two fluid domain and one solid domain, the structure is shown below. The two fluid domain has different mesh and use different model, but they share a surface. Both fluid1 and fluid2 has a surface coupling with the solid surface. I've run several coupling s...

Yvan:

Thanks for the reply! I can't find out why the fluctuation happen and just limit the solution temperature in a certain range.

Best Regards!
Jundi He

Hi: I have two cases, one is a normal annulus fluid domain, another one is an annulus with a little distortion(bow). Both are inlet from the top surface and outlet from the bottom surface, and all the boundary condition setup are the same. I set a monitoring probe in the middle of the fluid domain. ...

Luciano:

Thank you so much, I can make the result more clear by scaling down the axial direction.

Best Regards!
Jundi He

Hi all:

I have a simple question about ParaView. If my geometry is very long, when I look into the temperature distribution, I want to scale down by 10 only in the z direction, how can I do that? Thanks a lot!

Best Regards!
Jundi He