Fluids

Fluids

velocity derivatives in cfd post

    • rahmanmahfuz11
      Subscriber

      "Velocity" of fluent is named "velocity in Stn frame" in cfd post. I need to calculate vorticity which is dv/dx - du/dy or du/dy - dv/dx depending on clockwise or anti-clockwise rotation. Now the velocity derivatives available in the variables in cfd post are Velocity v.Gradient X, Velocity v.Gradient Y, Velocity u.Gradient Y, Velocity v.Gradient X etc. My understanding is they are "velocity in cfd post" derivative not "velocity in fluent" or "velocity in Stn frame in cfd post" derivative. I couldn't the derivatives of actual velocity i.e. velocity in Stn frame which my vorticity equation requires. How can I solve this issue? For comparison, I am attaching vorticity contour developed using both cfd post and tecplot.

    • RK
      Ansys Employee
      Hello,
      I am glad you you got this sorted and thank you for posting the solution as well.
    • DrAmine
      Ansys Employee
      thanks for posting the solution.
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