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A Numerical Analysis of Three-Dimensional Flow Within a Transonic Fan

천음속 팬의 3차원 유동에 관한 수치해석

  • 정주현 (충남대학교 대학원 기계설계공학과) ;
  • 고성호 (충남대학교 기계설계공학과)
  • Received : 1997.06.19
  • Published : 1999.01.01

Abstract

A numerical analysis based on the three-dimensional Reynolds-averaged Navier-Stokes equation has been conducted to investigate the flow within a NASA rotor 67 transonic fan. General coordinate transformations are used to represent the complex blade geometry and an H-type grid is used. The governing equations are solved using implicit LU-SGS scheme for the time-marching integration and a standard ${\kappa}-{\varepsilon}$ model is used with wall functions for the turbulence modeling. The computations are compared with the experimental data and a detailed study of the flow structures near peak efficiency and near stall is presented. The calculated overall aerodynamic efficiency and three-dimensional shock system agree well with the laser anemometer data.

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Acknowledgement

Supported by : 교육부