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http://dx.doi.org/10.5139/JKSAS.2009.37.6.562

Measurement of Aerodynamic Heating over a Protuberance in Hypersonic Flow of Mach 7  

Lee, Hyoung-Jin (서울대학교 기계항공공학부 대학원)
Lee, Bok-Jik (서울대학교 기계항공공학부 대학원)
Jeung, In-Seuck (서울대학교 항공우주공학과)
Kim, Seong-Lyong (한국항공우주연구원)
Kim, In-Sun (한국항공우주연구원)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.37, no.6, 2009 , pp. 562-570 More about this Journal
Abstract
An Experimental study was conducted on the flow characteristics and interference heating caused by a two-dimensional object protruding from a flat plate using a blow-down type of hypersonic wind tunnel. Inflow condition was a free-stream Mach number of 7.0 and a unit Reynolds number of $2.0{\times}10^6/m$. Experimental conditions were varied with three heights of protuberance for two flat plate models which have different lengths. Experimental data were obtained from Schlieren visualization images and heat flux measurements. Also, this paper suggests hypersonic experimental techniques such as boundary-layer detection method in detail. A Large separation region was observed in front of the protuberance and that region was very sensitive to the height of protuberance and the length of the flat plate. For only the highest protuberance, a severe jump of heat flux was observed at the top station among the measuring points. Measured heat flux is large when the height of protuberance is large and the length of flat plate is long.
Keywords
Protuberance; Hypersonic; Heat flux; Separation;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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