Control of airfoil flow at cruise condition by DBD plasma actuator: Sophisticated airfoil vs. Simple airfoil with flow control

Kento Asano, Makoto Sato, Taku Nonomura, Akira Oyama, Kozo Fujii

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

We have conducted large-eddy simulations of the airfoil flow at a cruise condition con­trolled by a DBD plasma actuator. The NACA0015 is used as the airfoil. The Reynolds number and angle of attack are set to be 63000 and 4 deg., respectively. In this condition, the flow is almost attached, except for the separation bubble region, over the airfoil. The lift-to-drag ratio is improved by the flow control with the burst mode actuation. The most effective burst frequency becomes F+ ≃ 6 and the normal mode actuation is not effective. The delay of the turbulent transition is one of the key mechanism for the effective flow con­trol at the cruise condition, differently from the separation control case. The flow feature and aerodynamic performance are compared between the controlled flow and “Ishii airfoil” flow, which is developed as a low-Reynolds-number airfoil. The lift-to-drag ratio attained by the flow control is comparable to that of the Ishii airfoil. Moreover, it can be said that the flow control by the plasma actuator on the simple shape airfoil has the capability to emulate the flow feature of the sophisticated airfoil.

本文言語English
ホスト出版物のタイトル8th AIAA Flow Control Conference
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN(印刷版)9781624104329
DOI
出版ステータスPublished - 2016
外部発表はい
イベント8th AIAA Flow Control Conference, 2016 - Washington, United States
継続期間: 2016 6 132016 6 17

出版物シリーズ

名前8th AIAA Flow Control Conference

Other

Other8th AIAA Flow Control Conference, 2016
国/地域United States
CityWashington
Period16/6/1316/6/17

ASJC Scopus subject areas

  • 流体および伝熱
  • 制御およびシステム工学
  • 航空宇宙工学

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