| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Turbulent drag reduction by sector-shaped counter-flow dielectric barrier discharge plasma actuator |
| Borui Zheng(郑博睿)1,4,5, Shaojie Qi(齐少杰)2,4, Minghao Yu(喻明浩)2,†, Jianbo Zhang(张剑波)1,4,5, Linwu Wang(王林武)1,4,5, and Dongliang Bian(卞栋梁)3 |
1 School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China;
2 School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China;
3 Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi'an 710038, China;
4 Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing, Xi'an 710048, China;
5 Shaanxi University Key Laboratory of Photonic Power Devices and Discharge Regulation, Xi'an 710048, China |
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Abstract The primary objective in aircraft transportation is to minimize turbulent drag, thereby conserving energy and reducing emissions. We propose a sector-shaped counter-flow dielectric barrier discharge plasma actuator, which leverages jet synthesis for drag reduction. A drag control experiment was conducted in a low-speed wind tunnel with a controlled flow velocity of 9.6 m/s ($Re = 1.445\times 10^{4}$). This study investigated the effects of varying pulse frequencies and actuation voltages on the turbulent boundary layer. Using a hot-wire measurement system, we analyzed the pulsating and time-averaged velocity distributions within the boundary layer to evaluate the streamwise turbulent drag reduction. The results show that the local TDR decreases as the pulse frequency increases, reaching a maximum reduction of approximately 20.97% at a pulse frequency of 50 Hz. In addition, as the actuation voltage increases, the friction coefficient decreases, increasing the drag reduction rate. The maximum drag reduction of approximately 33.34% is achieved at an actuation voltage of 10 kV.
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Received: 03 September 2024
Revised: 30 November 2024
Accepted manuscript online: 20 December 2024
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PACS:
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52.25.Gj
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(Fluctuation and chaos phenomena)
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52.30.-q
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(Plasma dynamics and flow)
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52.35.Ra
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(Plasma turbulence)
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52.35.We
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(Plasma vorticity)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61971345 and 52107174). |
Corresponding Authors:
Minghao Yu
E-mail: ymh@xaut.edu.cn
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Cite this article:
Borui Zheng(郑博睿), Shaojie Qi(齐少杰), Minghao Yu(喻明浩), Jianbo Zhang(张剑波), Linwu Wang(王林武), and Dongliang Bian(卞栋梁) Turbulent drag reduction by sector-shaped counter-flow dielectric barrier discharge plasma actuator 2025 Chin. Phys. B 34 025205
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