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

  • 제30권9호
  • /
  • Pages.913-920
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  • 2006
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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스퀄러팁 터빈 동익 하류에서의 3차원 유동 및 압력손실

Three-Dimensional Flow and Aerodynamic Loss Downstream of a Turbine Rotor Blade with a Squealer Tip

  • 채병주 (금오공과대학교 기계공학부) ;
  • 이상우 (금오공과대학교 기계공학부)
  • 발행 : 2006.09.01
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초록

Three-dimensional flow and aerodynamic loss in the tip-leakage flow region of a high-turning first-stage turbine rotor blade with a squealer tip have been measured with a straight miniature five-hole probe for the tip gap-to-chord ratio, h/c, of 2.0%. This squealer tip has a indent-to-chord ratio, $h/{st}/c$, of 5.5%. The results are compared with those for a plane tip $(h_{st}/c=0.0%)$. The squealer tip tends to reduce the mass flow through the tip gap and to suppress the development of the tip-leakage vortex. Therefore, it delivers lower aerodynamic loss in the near-tip region than the plane tip does. At the mid-span, however, the aerodynamic loss has nearly the same value for the two different tips.

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참고문헌

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