Transition control in a flat-plate boundary layer

Seiichiro Izawa, Takeshi Sakai, Ayumu Inasawa, Ao Kui Xiong, Yu Fukunishi

研究成果: Chapter

1 引用 (Scopus)

抜粋

A semi-automatic and active control of T-S waves and oblique waves is performed using an array of piezo-ceramic actuators attached on a flat-plate surface. The actuators generate counter waves to cancel the incoming instability waves. The actuator's operating amplitudes and phases are successively updated using the velocity fluctuations monitored downstream by a rake of hotwires. It is shown that the system could weaken these waves when their sweep angles are less than 15 degrees. However, it has difficulty in controlling the waves of large sweep angles. Through the results from the experiment activating only one actuator, it is shown that the difficulty arises because the wave front of the waves generated by each actuator deforms into an arch.

元の言語English
ホスト出版物のタイトルSixth IUTAM Symposium on Laminar-Turbulent Transition
編集者RAMA GOVINDARAJAN
ページ207-212
ページ数6
出版物ステータスPublished - 2006 12 1

出版物シリーズ

名前Fluid Mechanics and its Applications
78
ISSN(印刷物)0926-5112

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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  • これを引用

    Izawa, S., Sakai, T., Inasawa, A., Xiong, A. K., & Fukunishi, Y. (2006). Transition control in a flat-plate boundary layer. : RAMA. GOVINDARAJAN (版), Sixth IUTAM Symposium on Laminar-Turbulent Transition (pp. 207-212). (Fluid Mechanics and its Applications; 巻数 78).