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[학술강연] 2원주 및 원주열 주위의 PIV계측에 관한 연구
한원희(W.H.Han),봉태근(T.K.Bong),최민선(D.H.Cho),조대환(M.S.Choi) 한국마린엔지니어링학회 2002 한국마린엔지니어링학회 학술대회 논문집 Vol.2002 No.-
This experimental study investigates the wake flow behind a pair of cylinders displaced normal to a free stream. In this experiment, the principal aim is to investigate the transition mechanism of the large vortex generating process in the wake having unique vortex shedding pattern associated with the gap difference between the cylinders. The detailed visualization is carried out using the PIV measurement. The transition mechanism of the large generating vortex is clarified by showing the streak lines. the vorticity and the statistical fluctuating velocity distributions.
진완빈(W.B. Jin),조대환(D.H. Cho),한원희(W.H. Han) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
The cavity is of interest because recirculation flow in cavity would provide a enhancing the rate of mixing. In this study, a flow field in a cavity with a inclined rear walls were experimentally studied. It is found that as the Reynolds number increases, the flow in the cavity becomes unstable, with the primary vortex changing its structure from single-cellular to double-cellular.