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Riblets on an airfoil?

Question asked by Hector Carrera on Jul 28, 2020



I have been trying to model a shark inspired riblet surface on an airfoil NACA 6904, however, since the surface of the airfoil is non planar, I have problems when extruding the riblet´s profile.


This is the profile of the riblet surface:

and I attached the airfoil model in which I want to extrude it.


It is important to mention that I only want to extrude the riblet on the upper surface of the airfoil.


I hope you can help me  I would be very thankful.