한국가시화정보학회:학술대회논문집
- 한국가시화정보학회 2006년도 추계학술대회 논문집
- /
- Pages.102-108
- /
- 2006
정지비행하는 작은 벌의 3차원 공력특성
Three Dimensional Aerodynamic Characteristics of a Small Bee in Hovering Flight
초록
The three-dimensional flows in the Weis-Fogh mechanism are studied by flow visualization and numerical simulation by the discrete vortex method. In this mechanism, two wings open, touching their trailing edges (fling), and rotate in opposite directions in the horizontal plane. The structure of the vortex systems shed from the wings is very complicated and their effects on the forces on the wings have not yet been clarified. The discrete vortex method, especially the vortex stick method, is employed to investigate the vortex structure in the wake of the two wings. The wings are represented by lattice vortices, and the shed vortices are expressed by discrete three-dimensional vortex sticks. The vortex distributions and the velocity field are calculated. The pressure is estimated by the Bernoulli equation, and the lift on the wing are also obtained.
키워드