Study on the Fundamental Flow Characteristics of Synthetic Jets (1st Report : Behavior of Free Synthetic Jets)

• NISHIBE Koichi

  Kogakuin Univ. Dept. of Mechanical Engineering

• FUJITA Yuki

  （株）電業社機械製作所

• SATO Kotaro

  工学院大学 グローバルエンジニアリング学部

• YOKOTA Kazuhiko

  青山学院大学 理工学部

Bibliographic Information

Other Title

• シンセティックジェットの基本流動特性に関する研究（第一報 自由噴流の挙動について）

Abstract

Jet flows have been applied in a number of fields in order to control flow separation. Over the last decade, several studies have been carried out on the production of synthetic jets. However, there are still a large number of unknown quantities, including details of the structure and the formation mechanism of such jets. The present study attempts to clarify some of the fundamental flow characteristics of free synthetic jets, based on experiments and numerical simulations. Experimental velocity measurements and flow visualizations are performed using the hot-wire anemometer and the smoke wire method, respectively. It is found that both the temporal change in flow pattern and time-averaged velocity distribution at the centerline depend on K=ReU/S² (the ratio of the Reynolds number to the square of the Stokes number). The unsteady downstream flow characteristics are discussed, in addition to the relation between the formative point of the synthetic jet and the value of K. Furthermore, the flow pattern and the unsteady flow characteristics of the synthetic jet are compared with those of a continuous jet.

Journal

• TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B

  TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 77 (783), 2093-2104, 2011

  The Japan Society of Mechanical Engineers

Keywords

• Synthetic Jet
• Continuous Jet
• Free Jet
• Velocity Distribution
• Jet Formation
• Smoke Wire Method
• Unsteady Flow
• Turbulence

Details

• CRID: 1390001206263317376
• NII Article ID: 130001433046
• DOI: 10.1299/kikaib.77.2093
• ISSN: 18848346
• ISSN: 03875016
• Web Site: http://www.jstage.jst.go.jp/article/kikaib/77/783/77_783_2093/_pdf
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed