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Axisymmetric hub-endwall profile optimization for a transonic fan to improve aerodynamic performance based on an integrated design optimization method

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Abstract

This paper investigates an optimization for the axisymmetric hub-endwall profile of a transonic fan designed for a civil high bypass ratio turbofan engine. A time-saving integrated design optimization method is proposed based on a new hub-endwall profile modification method in combination with a novel two-stage polynomial response surface. The profile modification method is proposed to change the profile of the baseline hub curve by moving three control points, so as to redesign the hub-endwall. The two-stage polynomial response surface is proposed to obtain an accurate high-order polynomial while requiring fewer sampling points, so as to reduce the computational cost. The results show that the integrated design optimization method is suitable and valuable. After optimization, the corner separation of the studied fan is weakened, and the stall margin of the core fan is also enlarged. Moreover, the aerodynamic performance of the core fan at the design speed is improved.

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Authors and Affiliations

  1. School of Energy and Power Engineering, Beihang University, Beijing, China

    Cheng Yan, Zeyong Yin & Xiuli Shen

  2. Shen Yuan Honors College, Beihang University, Beijing, China

    Cheng Yan

  3. AECC Commercial Aircraft Engine Co., Ltd., Shanghai, China

    Zeyong Yin, Fushui Guo & Yu Wu

Authors
  1. Cheng Yan
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  2. Zeyong Yin
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  3. Xiuli Shen
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  4. Fushui Guo
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  5. Yu Wu
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Correspondence to Xiuli Shen.

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For the convenience of other researchers, the involved codes of the proposed two-stage polynomial response surface are included in the supplementary online material.

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Yan, C., Yin, Z., Shen, X. et al. Axisymmetric hub-endwall profile optimization for a transonic fan to improve aerodynamic performance based on an integrated design optimization method. Struct Multidisc Optim 60, 1267–1282 (2019). https://doi.org/10.1007/s00158-019-02266-y

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