Large-Eddy Simulations of Separated Supersonic Flow with Plasma Control

High-order implicit large-eddy simulations were performed for supersonic turbulent ow over a 24 compression ramp. The interaction between the turbulent ow and the corner led to a low-frequency, unsteady, shock-induced separation. A magnetically-driven plasma-based ow controller was modeled and applied to the ow to minimize the separated region and its adverse eects. The controller consisted of two streamwise separated segments pulsed 180 out of phase at a 50% duty-cycle. The results show that this controller conguration was very eective at reducing the separation while only using 80% of the power reported for previous studies.

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