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이산와법에 의한 원호형 Sea Anchor의 유동장 수치해석
노기덕,권병국,안희춘,Ro, Ki-Deok,Kwon, Byeong-Guk,An, Heui-Chun 대한기계학회 1998 大韓機械學會論文集B Vol.22 No.8
The fluid dynamic properties of a circular arc type sea anchor were calculated by a discrete vortex method. The flow for the surface of the sea anchor was represented by arranging bound vortices at adequate intervals. The simulations were performed by assuming that the separations occur at edges. With time, the drag coefficient was almost constant but the lift coefficient oscillated in a cycle by von Karman's vortex street. As the camber ratios increase, the drag coefficient and Strouhal number were almost constant but the oscillating amplitude of the lift coefficient increased largely.