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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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A Study on the Center Hole of Korean Traditional Kite with Aspect Ratio 1:1.5

가로세로비 1:1.5를 가진 한국 전통 지연의 방구멍에 대한 연구

  • Sah, Jong-Youb (Dept. of Automotive Mechanical Engineering, Yeungnam University)
  • Received : 2020.01.13
  • Accepted : 2020.03.20
  • Published : 2020.04.01
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Abstract

Korean traditional kite has the unusual shape of the elongated rectangle with the center hole. The aerodynamic forces are numerically computed on Korean traditional kite with aspect ratio 1:1.5 by using FLUENT software. Simulating the flight of the kite with various diameters of the center hole, the present study has investigated the role of the center hole as well as the effect of diameter of the center hole. The center hole plays a role in relieving the sudden increase of tension associated with fast rewinding of the kite thread in kite fighting, thereby enabling faster rewinding of the kite thread. The proper diameter of the center hole is 1/3 of the width.

한국 전통 지연은 장방형으로 그 가운데 방구멍을 가진 특이한 형태를 갖고 있다. FLUENT 코드를 사용하여, 가로세로비 1:1.5인 한국 전통 지연에 작용하는 공기역학적 힘들을 수치적으로 계산하였다. 다양한 직경의 방구멍에 대하여 연의 비행을 시뮬레이션하여, 방구멍의 역할과 방구멍 크기에 따른 영향을 조사하였다. 방구멍은 연싸움에서 연실의 빠른 되감기로 인한 장력의 급격한 상승을 완화시켜 주는 역할을 함으로써, 연실을 더 빨리 되감을 수 있게 한다. 방구멍의 적절한 직경은 가로 폭의 1/3이다.

Keywords

References

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