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이색 PIV 기술을 이용한 가솔린 엔진 연소실내의 유동특성에 관한 연구
이기형(K.H.Lee),오승익(S.I.Oh),이현직(H.J.Lee),정재훈(J.H.Chung),주영철(Y.C.Ju) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_1
It has been known that the in-cylinder flow field structure at ignition timing has an effect on the shape of initial flame. The particle image velocimetry(PIV), a planar measuring technique, is an efficient tool for studying the complicated flow field such as in-cylinder flow and intake port flow.<br/> In this study, two-color scanning PIV is designed to obtain quasi-instantaneous two-dimensional velocity data by using a rotating mirror and a beam splitter. This PIV allows the complex turbulent flow and vorticity including countercurrent like tumbling flow by using spatial filtering technique. In addition, high spatial resolution is adequate to resolve the few-mm turbulent integral length scales.<br/>