The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Measurement of the Film Cooling Effectiveness using Pressure Sensitive Paint on Convergent/Divergent Channel

압력감응페인트를 이용한 확대/축소 유로에서의 막냉각 효율 측정

  • 박승덕 (한국항공대학교 항공우주 및 기계공학과 대학원) ;
  • 이기선 (한국항공대학교 항공우주 및 기계공학과 대학원) ;
  • 김성하 (한국항공대학교 항공우주 및 기계공학과 대학원) ;
  • 김학봉 (한국항공대학교 항공우주 및 기계공학과) ;
  • 곽재수 (한국항공대학교 항공우주 및 기계공학과) ;
  • 김춘택 (한국항공우주연구원 KHP 사업단) ;
  • 양계병 (국방과학연구소)
  • Published : 2008.12.01
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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.

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References

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