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Plasma flow control of the tip vortices over a very low aspect-ratio wing

Dong, Lei; Choi, Kwing So; Wang, Yaxing

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Authors

Lei Dong

KWING-SO CHOI kwing-so.choi@nottingham.ac.uk
Professor of Fluid Mechanics



Abstract

Flow control of the tip vortices over a very low aspect-ratio wing was carried out using the dielectric-barrier-discharge plasma actuators. The results indicate a large change in the aerodynamic forces by plasma flow control, where the lift coefficient is increased by the blowing plasma actuator by 23% and is reduced by the suction plasma actuator by 30%. The change in the drag coefficient is less than 10%. The blowing plasma moves the tip vortex outboard away from the wing tip, increasing the streamwise vorticity as well as the turbulence intensities and the Reynolds stress. With the suction plasma, the tip vortex is shifted inboard closer to the wing tip. Co-flowing with the tip vortex, the blowing plasma increases the tip vortex circulation, while it is reduced by the counter-flowing suction plasma.

Citation

Dong, L., Choi, K. S., & Wang, Y. (2022). Plasma flow control of the tip vortices over a very low aspect-ratio wing. Physics of Fluids, 34(8), Article 087101. https://doi.org/10.1063/5.0101110

Journal Article Type Article
Acceptance Date Jul 6, 2022
Online Publication Date Aug 1, 2022
Publication Date Aug 1, 2022
Deposit Date Jul 11, 2022
Publicly Available Date Aug 1, 2022
Journal Physics of Fluids
Print ISSN 1070-6631
Electronic ISSN 1089-7666
Peer Reviewed Peer Reviewed
Volume 34
Issue 8
Article Number 087101
DOI https://doi.org/10.1063/5.0101110
Keywords Condensed Matter Physics; Fluid Flow and Transfer Processes; Mechanics of Materials; Computational Mechanics; Mechanical Engineering
Public URL https://nottingham-repository.worktribe.com/output/8947693
Publisher URL https://aip.scitation.org/doi/full/10.1063/5.0101110
Additional Information This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Lei Dong (董磊), Kwing-So Choi, and Yaxing Wang (王亚兴) , "Plasma flow control of the tip vortices over a very low aspect-ratio wing", Physics of Fluids 34, 087101 (2022) and may be found at https://doi.org/10.1063/5.0101110

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