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Wing Stall

Overview of Wing Stall Research

 

The phenomena that occur at high angles of attack are extremely complex. In particular, separation and laminar-turbulent transition, accompanied by vortical structure formation are major features. We seek to answer the following questions:

  • What are the mechanisms by which three-dimensional phenomena set in for a stalled wing section?
  • What is the effect of Reynolds number on the stall phenomenon?
  • How do active actuators, based on nano-second pulsed discharges couple to the flow?
  • What is the optimal frequency of excitation that can produce the most response from the flow?
  • What happens in reverse flight encountered in forward flight of helicopters?

We employ experimental data extensively to ensure that our simulations represent reality. The validated simulations are then post-processed with sophisticated statistical techniques to generate enabling insight. Some of our recent work can be viewed through use of the links on the left.