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최상범(S. B. Choi),조대환(D.H. Cho),봉태근(T.G. Bong) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
A flow field around submerged vertical plate is investigated experimentally. Vortices are generated at the tip of each side of the plate. The largest vortices at each side of the plate eventually grow to the size of the water depth. The vortex shedding process can be divided into three phases: the formation of a separated shear layer, the generation and shedding of vortices, the formation of a vortex, and the impingement onto the upper flow.
봉태근,조대환 木浦海洋大學校 2004 論文集 Vol.12 No.-
The turbulent shear flow around a surface-mounted vertical wall was investigated by using the two-frame PIV(CACTUS 3.1) system. And mean velocity distributions have also been measured in the whole flow field. From this study, it is revealed that at least 500 instantaneous velocity field data are required for ensemble average to get reliable turbulence statistics. It. is found that the large eddy structure in the separated shear layer have significant influence on the development of the separated shear layer. The vertical wall with center gap ε=20% seems to be effective for attenuating the velocity fluctuations behind wall.