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http://dx.doi.org/10.5139/JKSAS.2011.39.7.585

Numerical Study on Flow Characteristics of Synthetic Jet with Rectangular and Circular Slot Exit  

Kim, Min-Hee (서울대학교 계산과학협동과정 대학원)
Kim, Woo-Re (서울대학교 기계항공공학부 대학원)
Kim, Chong-Am (서울대학교 기계항공공학부)
Jung, Kyung-Jin (국방과학연구소)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.39, no.7, 2011 , pp. 585-595 More about this Journal
Abstract
The flow characteristics of synthetic jet depending on rectangular and circular jet exit configuration are investigated using numerical computation with cross flow. In rectangular slot, synthetic jet generates the strong vortex but supplies fewer momentum and effectiveness of flow control is reduced along flow direction. In circular slot, regular vortex is formed from slot center to end. It affects the wider region than rectangular slot. The distribution of wall shear stress is considered in order to indicate the effectiveness of flow control device for flow separation delay. Consequently, circular slot is a more suitable candidate for delaying flow separation. In order to derive the optimal shape of a circular slot exit, hole gap and diameter that affect the flow structure and flow control were analyzed. As a result, consider the hole diameter and gap of circular slot exit design, effectiveness of the flow control can be increased.
Keywords
Synthetic jet; Flow control; Wall shear stress; Flow structure;
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Times Cited By KSCI : 2  (Citation Analysis)
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