Topics relate to Fluent, CFX, Turbogrid and more

Hypersonic Flow Problem in Ansys Fluent

    • Matthew Caulfield

      Does anyone know how to stop hypersonic flow from occuring in ansys discovery fluid simulations.  I am getting a velocity of a order of magnitude higher than I am expecting and was wondering how this can possibly be fixed. Thank you in advance.

    • Devendra Badgujar
      Forum Moderator

      Hi Matthew, 

      Are you doing buoyancy here? Your gravity is ON, if not doing this then you can turn off this. 

      Also, temperature of water vapor at 1400 is very high? Are you using appropriate properties and if vapor is compressible (most likely at 1400 C temperature), then in that case you should use Ideal Gas for it.

      It looks like you are doing 3 same simulations in one. You should do it one at a time. 



    • Matthew Caulfield




      The temperature is correct. I was able to change it to a compressable fluid and use the ideal gas law in ansys discovery simulations in the materials selection tab. I am now in refine section of the simulations modeling since I could not do compressable fluid flow modeling in the explore tab. Now, I am experiencing difficulty with the geometry and that an error has occured with the physics set up, how would I go about fixing that if anyone has suggesstions.  Thank you so much for your help and support.



Viewing 2 reply threads
  • You must be logged in to reply to this topic.