Modelling roughness and its parameters.

    • CMHR


      I am conducting a project that deals with the importance of roughness at highspeed aerodynamic regimes. I have looked at the ANSYS handbook in regards to how roughness is modeled, and they have kindly provided a reference to one book where they get the equations from. However, I would still like some further information in regards to how they modeled it. For example, what is the transitional Reynolds number Re_k they used? Does it take into account the adverse pressure gradient effects?

      I ask this because the geometry I am working with is not a flat plate or a pipe.

      I hope to hear from you soon. Thank you very much.

      Kind regards,


    • Swathi V. V.
      Ansys Employee
      Hello Please refer to section " Wall Roughness Effects in Turbulent Wall-Bounded Flows" in 7.4.15. Wall Boundary Conditions (ansys.com)
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