Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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The Characteristics of Fluid Flow in a Channel by Oscillating Vortex Generator

가진되는 와류발생기에 의한 채널내의 유동 특성

  • Bang, Chang-Hoon (Department of Fire Safety Management, Kyungpook College) ;
  • Kim, Jung-Soo (Deagu branch, Korea Occupational Safety and Health Agency) ;
  • Choo, Hong-Lok (Department of Fire Safety Management, Daegu Health College)
  • 방창훈 (경북전문대학 소방안전관리과) ;
  • 김정수 (한국산업안전공단) ;
  • 추홍록 (대구보건대학 소방안전관리과)
  • Published : 2007.04.30
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Abstract

A problem of a unsteady time-dependent flow in a channel is of practical importance and widely considered in the design of devices such as heat exchangers, duct, and electronic equipments. The characteristics of fluid flow in channel with oscillating vortex generator was investigated experimentally. The main object of this study was to investigate the effect of the excited frequency, the excited amplitude, and Reynolds numbers on the generated frequency. Flow patterns were visualized using smoke generator and generated frequencies were measured using hot wire anemometer. When the excited frequency is increased, excited amplitude decreased and Reynolds number increased, the strength of PSD of generated frequency is decreased.

Keywords

References

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