Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Optimal Design for a Conic Winglet of a Dual Type Combined Fan

이중구조팬의 Conic Winglet 최적설계

  • Kim, Jin-Wook (Department of Mechanical Engineering, Hanyang Univ.) ;
  • Kim, Woo-Teak (Department of Mechanical Engineering, Hanyang Univ.) ;
  • Ryu, Min-Hyoung (Department of Mechanical Engineering, Hanyang Univ.) ;
  • Cho, Lee-Sang (Department of Mechanical & System Engineering, Hansung Univ.) ;
  • Cho, Jin-Soo (School of Mechanical Engineering, Hanyang Univ.)
  • Received : 2016.01.16
  • Accepted : 2016.05.10
  • Published : 2016.06.01
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Abstract

In this study, the conic winglet which is made by rotating wing tip airfoil by each 3 axis is applied to the dual type combined fan to reduce the wing tip leakage loss. Computational Fluid Dynamics is used to calculate the loss and optimum technique is used to get minimum loss. Optimization results shows that total pressure loss coefficient was reduced by 3.4 %, and optimization model was a bended shape at the end of wing forward to pressure side.

본 연구에서는 이중구조를 갖는 팬의 날개 끝에서 발생하는 손실을 저감시키기 위하여 바깥 날개 끝 익형단면을 세 축으로 회전시키는 Conic winglet을 적용하였다. 손실을 계산하기 위하여 CFD 전산해석을 수행하였으며, 최소의 손실을 얻기 위하여 최적화를 수행하였다. 최적화 결과 Conic winglet은 바깥 날개 끝의 후단 부근에서 압력면 쪽으로 휘어진 형상을 보였으며 이 형상은 날개 끝에서 발생하는 전압력 손실을 3.24 % 저감시켰다.

Keywords

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