연구논문집

Korea Institute of Machinery & Materials (한국기계연구원)
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3-Dimensional Computations within the Flow Passage of the Steam Turbine Nozzle with and without Tip Clearance

증기 터빈 노즐에서의 익단 간극에 의한 3차원 유동장의 수치 해석적 연구

  • 조수용 (한국기계연구원 열유체시스템연구부) ;
  • 오군섭 (한국기계연구원 열유체시스템연구부) ;
  • 김수용 (한국기계연구원 열유체시스템연구부) ;
  • 윤의수 (한국기계연구원 열유체시스템연구부)
  • Published : 1995.12.31
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Abstract

Three-dimensional incompressible turbulent flow fields within the passage of the steam turbine nozzle with/without tip clearance have been simulated by solving the Navier-Stokes equations with SIMPLE scheme. The extended k-e model is applied to modeling the Reynolds stresses. Grids in the computational domain are generated by solving the Poisson's equations to improve the smoothness and orthogonality. Flow losses, secondary flow, velocity profiles, and deviation angles are obtained. The computated results without tip clearance show good agreement with the experimental data.

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