code_saturne User's Forum

Hello Daniele, You are correct, I want to solve a dispersed phase inside a continuous one. At the moment I use the core of the VOF implementation to modify the physical properties (density, viscosity, Cp) as a function of the void fraction. Also, I change/remove the interface-capturing model and the...

Hello,

This type of mesh can be done with Salome using the Viscous Layer Hypothesis.

Here you have a link to examples and docs.

https://docs.salome-platform.org/latest ... eshes.html

Regards,
Luciano

Hello, As Yvan mentioned in the previous post, it seems to be a problem with overlapping boundary zones. Anyways, the quality criteria of the "tablierbeton1.med" tetrahedral mesh is not good and you should improve it. The Mesh_5 is a better quality mesh, but you have to fix some issues in ...

Thank you very much Daniele, for your answer on this topic. My first attempt was to use the solution that you mentioned, but in my case, I have a mass transfer between phases, similar to a boiling or cavitation process. It is not clear why you mention that it "will not be possible with the spac...

Ok Yvan,

Thank you for your answer.

I will wait for any recommendations.

Best regards,
Luciano

Hello, I have a question regarding utilizing CS to solve multiphase flows using a mixture model. In fact, CS can solve multiphase flows using VOF, an interface-capturing model that combines some highly compressive NVD scheme with a artificial drift flux (cs_vof_deshpande_drift_flux) to compress the ...

Hello,

Did you use the same mesh in CFX and CS?

Regards,

Luciano

Hello Luciano and Yvan, @ Luciano: thank you for the update. I set the upwind scheme for velocity only and the simulation was running without interruptions. My question is: did you use that Scheme in your simulations or it is just a workaround for me? The results of the previous post was with the s...

Hello, To have rough wall option, you have to set a turbulence model and also a wall function, for default no wall function is used, soy the rough wall option is in gray. But I have no option rough wall even if I tick turbulence. Attached is the case (The mesh correspond to the first post and should...

Hello, 1) if I run the simulation with the Time Step Option = "Constant" (and reference time step = 0.0002 as suggested) the simulation stacks because of an excess of fluid speed. Did you face the same issue? No, but in your setup all the numerical scheme where in automatic, you can try to...