Fluids

Fluids

Turbulent Compressible Flow model setup (High mach number)

    • mmorg41
      Subscriber

      I am working on simulating a transient flow that is compressible and turbulent through a pipe. You can think of it like an explosion on one end of the pipe and I am trying to simulate the fluid in the rest of the pipe. I want to make sure I have my viscous model setup correctly. Can someone please give me some advice on the best viscous model to use? Thanks!

    • José Mantovani
      Subscriber

      Hello mmorg41, below have a two references to you find the correct set up for turbulence model! 


      https://br.comsol.com/blogs/which-turbulence-model-should-choose-cfd-application/


      https://www.engineering.com/DesignSoftware/DesignSoftwareArticles/ArticleID/13743/Choosing-the-Right-Turbulence-Model-for-Your-CFD-Simulation.aspx


      Good lucky!


      Mantovani.

    • Raef.Kobeissi
      Subscriber
      A short answer would be the SST K Omega model, it deals with adverse pressure gradient better than K epsilon and is not sensitive to inlet boundary conditions as K Omega. Obviously my ansert is a bit simplistic and a good read about turbulence would explain it better.
      Cheers
    • Raef.Kobeissi
      Subscriber
      1 additional point: have you used the density based solver?
      Cheers
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