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

The Korean Society of Mechanical Engineers (대한기계학회)
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Secondary flow Control in the Turbine Cascade with the Three-Dimensional Modification of Blade Leading Edge

블레이드 앞전 3차원 형상 변형에 의한 터빈 캐스케이드 내의 이차유동 제어

  • 김정래 (고려대학교 대학원 기계공학과) ;
  • 문영준 (고려대학교 기계공학과) ;
  • 정진택 (고려대학교 기계공학과)
  • Published : 2002.11.01
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Abstract

The blade leading edge is modified to control the secondary flow generated in the turbine cascade with fence by intensifying the suction side branch of the horseshoe vortex. The incompressible Navier-Stokes equations are numerically solved with a high Reynolds number k-$\varepsilon$ turbulence closure model for investigating the vortical flows in the turbine cascade. The computational results of total pressure loss coefficients in the wake region are first compared with experiments for validation. The structure and strength of the passage vortex near the suction surface are examined by testing various geometrical parameters of the turbine blade leading edge.

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References

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