| Citation: | ZHENG Haibo, GAO Chao, WU Bin, et al. Drag reduction control of turbulent boundary layer based on plasma actuation[J]. Journal of Aerospace Power, 2023, 38（5）：1157-1165 doi: 10.13224/j.cnki.jasp.20210546
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In order to further explore the drag reduction effect of the turbulent boundary layer by the dielectric barrier discharge （DBD） plasma actuation, an experimental study was performed to reduce the flat plate turbulent boundary layer drag in a low-speed wind tunnel with a freestream velocity of 10.7 m/s. This experiment focused on the drag reduction of different pulsing frequencies on the flat plate turbulent boundary layer. The hot wire anemometer system was used to collect the streamwise velocity signal, and acquire the mean velocity distribution and fluctuation velocity distribution within the turbulent boundary layer. A comparative analysis of the experimental results showed that the plasma significantly reduced the mean velocity in the logarithmic region of the boundary layer, and as the pulsing frequency increased, the local drag reduction showed a trend of first increased and then decreased. When the pulsing frequency of 200 Hz, the maximum local drag reduction rate was 7.4%.
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