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http://dx.doi.org/10.5139/JKSAS.2004.32.8.047

Influences of Blowing Jet Type and Jet Angle on the Flow Control of Elliptic Airfoil  

Lee, Ki-Young (공군사관학교 기계공학과)
Sohn, Myong-Hwan (공군사관학교 항공우주공학과)
Jang, Young-Il (공군사관학교 항공우주공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.32, no.8, 2004 , pp. 47-53 More about this Journal
Abstract
An Experimental investigation into the effects of the blowing jet type and jet orientation on the aerodynamic characteristics over an elliptic type airfoil is explored. This study is aimed at expanding the data base of blowing jet application in separation control of elliptic airfoil. Present data includes: surface pressure, blowing jet exit velocity measurements and integrated aerodynamic loads. The experiments were performed for an elliptic airfoil at Reynolds number $8.22{\times}10^5$. The improvement of effects of pulsed jet on the increase of aerodynamic characteristics was significant for the post-stall angle. For reduced mass flow rates, pulsed jet allowed considerably higher lift to be generated. The jet orientation also showed dominant parameter on the separation control Positive jet angle delay or avoid separation, whereas negative jet angle promotes it.
Keywords
Blowing Jet; Pulsed Jet; Blowing Jet Angle; Flow Control; Elliptic Airfoil;
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