The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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A Numerical Study on the Film-Cooling Characteristics of Gas Turbine Blade using CO2

이산화탄소를 이용한 가스터빈 블레이드 막냉각 특성 연구

  • 김상권 (성균관대학교 대학원 기계공학과) ;
  • 이종철 (강릉원주대학교 기계자동차공학부) ;
  • 김윤제 (성균관대학교 기계공학부)
  • Received : 2011.09.23
  • Accepted : 2012.01.20
  • Published : 2012.04.01
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Abstract

In order to cool the turbine blade under high temperature operating conditions, the film-cooling method is generally applied. In this study, $CO_2$ was used as working fluid and it helped the operating system to prevent the loss of compressed air. The trapezoidal diffuser shape was adopted at the cross section of hole and the characteristics of heat flow with various working fluids were numerically studied. In particular, the different mixture ratios of $CO_2$, such as various density ratios of 0.2, 0.8, and 1.0, respectively, were considered. Numerical results are graphically depicted with various conditions.

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References

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