The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Effects of Geometry of Anti-Vortex Holes on Film-Cooling Effectiveness

반와류 홀의 형상 변화가 막냉각 효율에 미치는 영향

  • Kim, Jun-Hee (Dept. of Mechanical Engineering, Graduate School, Inha Univ.) ;
  • Kim, Sun-Min (Dept. of Mechanical Engineering, Graduate School, Inha Univ.) ;
  • Kim, Kwang-Yong (Dept. of Mechanical Engineering, Inha Univ.)
  • 김준희 (인하대학교 대학원 기계공학과) ;
  • 김선민 (인하대학교 대학원 기계공학과) ;
  • 김광용 (인하대학교 기계공학부)
  • Received : 2013.10.11
  • Accepted : 2014.01.24
  • Published : 2014.04.01
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Abstract

A parametric study on anti-vortex holes for turbine blade cooling was investigated numerically. Three-dimensional Reynolds-averaged Navier-Stokes equations and shear stress transport turbulence model were used for analysis of anti-vortex film cooling. Validation of numerical results was carried out comparing with experimental data. The cooling performance of anti-vortex holes was assessed by two geometric variables, the ratio of diameters of holes and the lateral distances between the primary hole and anti-vortex hole at blowing ratios of 0.5 and 1.0. The results showed that the spatially-averaged film-cooling effectiveness increases as the ratio of the diameters increases and the distance between the primary hole and anti-vortex hole decreases.

Keywords

References

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