Journal of Advanced Marine Engineering and Technology

  • 제32권1호
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  • Pages.100-109
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  • 2008
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  • 2234-7925(pISSN)
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  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
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Hydrodynamic Characteristics of a Small Bee in Hovering Flight

  • Ro, Ki-Deok (School of Mechanical and Aerospace Engineering.Institute of Marine Industry, Gyeongsang National University) ;
  • Kim, Kwang-Seok (Graduate School of Gyeongsang National University, Department of Mechanical system Engineering)
  • 발행 : 2008.01.31
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초록

The three-dimensional flows in the Weis-Fogh mechanism are studied by flow visualization and numerical simulation by the vortex method. The vortex method. especially the vortex stick method, is employed to investigate the vortex structure in the wake of the two wings. The pressure is estimated by the Bernoulli equation, and the lift on the wing are also obtained. As the results the eddies near the leading edge of each wing in the fling stage take a convex shape because the eddies shed from both tips entrain the flows and the downwash in the rotating stage is deflected toward the outside because the outside tip vortex is stronger than the inside one. And the lift coefficient on the wings in this mechanism is almost independent of the Reynolds number.

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참고문헌

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