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Measurement of the Film Cooling Effectiveness on a Flat Plate using Pressure Sensitive Paint  

Park, Seoung-Duck (한국항공대학교 항공우주 및 기계공학부)
Lee, Ki-Seon (한국항공대학교 항공우주 및 기계공학부)
Kim, Hark-Bong (한국항공대학교 항공우주 및 기계공학부)
Kwak, Jae-Su (한국항공대학교 항공우주 및 기계공학부)
Kim, Jae-Hwan (한국항공우주연구원 엔진개발팀)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.12, no.5, 2008 , pp. 67-72 More about this Journal
Abstract
The film cooling effectiveness on a flat plate measured by pressure sensitive paint technique. Six film cooling hole were fabricated on a flat plate with 30 degree angle with respect to the surface and three blowing ratios of 0.5, 1, and 2 were tested. Results showed that PSP technique successfully evaluated the distribution of film cooling effectiveness and showed similar results with references. The film cooling effectiveness near the film cooling holes was higher for lower blowing ratio case. As the blowing ratio was increased, the film cooling effectiveness near the film cooling hole decreased due to the lift off of the coolant. At far downstream, the film cooling effectiveness for higher blowing ratio was higher due to the coolant reattachment.
Keywords
Film cooling; Pressure Sensitive Paint; Blowing Ratio;
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  • Reference
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