Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Three-dimensional flow within a film-cooling hole normally oriented to the main flow

수직분사 막냉각구멍 내부에서의 3차원 유동특성

  • Lee, Sang-U ( Dept.of Machanical Engineering, Kumoh National Institute of Technology) ;
  • Ju, Seong-Guk ( Dept.of Machanical Engineering, Kumoh National Institute of Technology)
  • 이상우 (금오공과대학교 기계공학과) ;
  • 주성국 (금오공과대학교 기계공학과)
  • Published : 1997.09.01
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Abstract

Three-dimensional flow within a film-cooling hole, which is normally oriented to the main flow, has been measured by using a straight five-hole probe for the blowing ratios of 1.0 and 2.0. The length-to-diameter ratio of the injection hole is fixed to be 1.0 throughout the whole experiments. The result shows that the secondary flow within the hole is strongly affected by the main flow and flow separation at the hole inlet. The higher blowing ratio provides less influence of the main flow on the injectant flow. The three-dimensional flow at the hole exit is considerably altered due to the strong interaction between the injectant and main flow. The aerodynamic loss produced inside the injection hole is mainly attributed to the inlet flow separation.

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References

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