Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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An experimental study on the flow separation characteristics of a paraglider canopy

패러글라이더 캐노피의 유동박리 특성에 대한 실험적 연구

  • Shin, Jeonghan (Department of Mechanical Engineering, Ulsan National Institute of Science and Technology) ;
  • Chae, Seokbong (Department of Mechanical Engineering, Ulsan National Institute of Science and Technology) ;
  • Shin, Yisu (Department of Mechanical Engineering, Ulsan National Institute of Science and Technology) ;
  • Kim, Jooha (Department of Mechanical Engineering, Ulsan National Institute of Science and Technology)
  • Received : 2020.11.27
  • Accepted : 2020.12.17
  • Published : 2020.12.31
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Abstract

In the present study, we investigate the flow separation characteristics of a paraglider canopy model by tuft visualization. The experiment is conducted at Re = 3.3×105 in a wind tunnel large enough to contain the three-dimensional paraglider canopy model, where Re is Reynolds number based on the mean chord length and the free-stream velocity. The flow separation characteristics of the canopy model near the wing root are similar to those of a two-dimensional airfoil with a cross-section similar to the model. On the other hand, near the wingtip region, the flow separation is suppressed by the downwash induced by the wingtip vortex. As a result, as the angle of attack increases, the flow separation occurs from the wing root region of the canopy model and develops toward the wingtip.

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References

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