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Same model, different results

    • wrosendoeng


      I'm studying an inviscid compressible flow that I tried to analyze with two different manners:

      1. Creating a new Fluent Analysis for each case (12 velocities, from Mach 1 to Mach 3)
      2. Using Design Points and defining input/output parameters and solving these 12 velocities.

      When I compared both results with my reference values for drag coefficient (CD), the first case presents far better results than second one. Is there any explanation?

      Thanks in advance!

    • Rob
      Forum Moderator
      What is the initial condition and convergence level for each case?
    • DrAmine
      Ansys Employee
      Usually convergence and startup related.
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