An active surface Pulsed-DC plasma actuator array that has been proven to be effective at reducing viscous drag in zero pressure gradient turbulent boundary layers is investigated under adverse pressure gradient conditions. The actuator is designed to produce a spanwise velocity component in the sublayer to suppress the lift-up of near-wall streaks that are correlated with wall shear stress. The experiments arc performed on a custom wind tunnel insert with a suspended plate and a hinged trailing portion which is pivoted in order to generate an adverse pressure gradient in the region where the actuator array is mounted. Boundary layer profiles are collected using a custom constant temperature hot-wire anemometer which is capable of operating in the ionized air environment. The Variable Interval Time Averaging (VITA) Method and the Clauser Plot Method are used to develop a linear relationship between the number of burst events and the skin friction velocity of a given turbulent boundary layer in accordance with the historically observed trend. When the plasma array is operated, there is a significant reduction in the number of bursting events which corresponds to a reduction in skin friction coefficient up to approximately 42%.
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