J0530202 乱流促進デバイスを用いた航空エンジン用低圧タービン翼の高負荷化に関する研究([J053-02]流体機械の研究開発におけるEFD/CFD(2),流体工学部門)

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タイトル別名
  • J0530202 Studies on High-Lift LP Turbine Airfoil using Turbulent Devices

抄録

In order to improve the efficiency of high-lift low pressure turbines, this paper investigates two types of airfoils which have two-dimensional contouring with a small step or dimples on the suction surface to suppress the separation bubble that causes large aerodynamic loss, especially in the case of high stage loading. A linear cascade test facility is employed to investigate the aerodynamic performance of the two-dimensional contoured airfoil by use of miniature Pitot probes and RANS simulations are carried out to investigate the three types of dimple layouts. The Reynolds number based on the chord length was varied in the range of 40,000 to 170,000 to simulate a typical flight condition. It is found that the proposed methods are capable of reducing the profile loss, resulting in an improvement of cascade performance.

収録刊行物

  • 年次大会

    年次大会 2014 (0), _J0530202--_J0530202-, 2014

    一般社団法人 日本機械学会

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