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  3. Running My 3D Flow Simulation at 25 mph

Running My 3D Flow Simulation at 25 mph

    • April 15, 2020 at 5:33 am
      gwilliams1
      Subscriber

      Hello,


      I am running my 3D flow simulation for my airfoil and I am unable to get conclusive data. When I run my simulation at a high speed, my lift makes sense, but when I run it at 25 mph, I get inconclusive data. I don't understand why it is doing that and I was wondering if anyone has any suggestions.


      My cL graph when I have high speeds:



      My cL graph when the speed is at 25 mph:


       

    • April 15, 2020 at 10:35 am
      Amine Ben Hadj Ali
      Ansys Employee
      high speed means? What about convergence behavior?
    • April 15, 2020 at 5:33 pm
      gwilliams1
      Subscriber

      Well I was following the 3D transonic flow simulation from Cornell and they used a mach speed of 0.8395. I think I just used the default for the convergence behavior, is there something I should change for that?

    • April 16, 2020 at 12:25 pm
      Rob
      Forum Moderator

      What does the flow field look like? That may well explain your graph, as may the convergence plots. 

    • April 17, 2020 at 4:35 pm
      gwilliams1
      Subscriber

      Here is what my fluid region looks. How should I make for a 3D flow simulation?


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