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http://dx.doi.org/10.5293/KFMA.2008.11.6.031

Measurement of the Film Cooling Effectiveness using Pressure Sensitive Paint on Convergent/Divergent Channel  

Park, Seoung-Duck (한국항공대학교 항공우주 및 기계공학과 대학원)
Lee, Ki-Seon (한국항공대학교 항공우주 및 기계공학과 대학원)
Kim, Sung-Ha (한국항공대학교 항공우주 및 기계공학과 대학원)
Kim, Hark-Bong (한국항공대학교 항공우주 및 기계공학과)
Kwak, Jea-Su (한국항공대학교 항공우주 및 기계공학과)
Kim, Chun-Teak (한국항공우주연구원 KHP 사업단)
Yang, Gyae-Byung (국방과학연구소)
Publication Information
The KSFM Journal of Fluid Machinery / v.11, no.6, 2008 , pp. 31-37 More about this Journal
Abstract
Film cooling effectiveness on the convergent or divergent channel was measured by pressure sensitive paint technique. The channel convergent or divergent angle was changed from $-5^{\circ}$ to $10^{\circ}$ and the tested blowing ratios were 0.5, 1 and 2. Results showed that the film cooling effectiveness on the convergent channel was not much affected by the convergent angle. With divergent film cooled surface, the film cooling effectiveness near the injection hole decreased as the divergent angle increases. However, the film cooling effectiveness at far downstream from the hole showed opposite trend. For the non-film cooled surface inclined case, the film cooling effectiveness was not much affected by the divergent angle.
Keywords
Film Cooling; Pressure Sensitive Paint; Blowing Ratio; Film Cooling Effectiveness;
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