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The Characteristics of Fluid Flow in a Channel by Oscillating Vortex Generator  

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)
Publication Information
Journal of the Korean Society of Safety / v.22, no.2, 2007 , pp. 1-7 More about this Journal
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
unsteady time-dependent flow; excited frequency; oscillating vortex generator;
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