Abstract
The structure of juncture flows caused by a flat plate mounted a short cylinder on has been experimentally studied through visualization and measurement. The experiment was conducted in a water tunnel with low turbulence intensity which is less than 0.3%. The test Reynolds number was changed from 1,000 to 32,000. The results suggested that (a) four typical flow patterns were visualized clearly, which correspond to four Reynolds number ranges respectively; (b) there are strong correlations between the oscillation of the juncture horseshoe vortex system and the velocity fluctuation of upstream separated shear layer.
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Supported by CNSF No 19572005 and Climbing Project“95”
Qing-Ding Wei: He graduated in Mechanics in 1963 from Peking University. He worked in 7th Institute of Aeronautic Academy of China as a research engineer from 1968 to 1976 and then he has worked at Peking University up to now. He received his Ph. D degree in Aeronautic Engineering in 1981 from the University of Tokyo. Now he works at State Key Laboratory for Turbulence Research of Peking University as a Professor. His research interest covers fluid mechanics including turbulence experiment, environmental fluid mechanics, wind engineering. He serves as the Director of the Committee of Flow Visualization, the Society of Aerodynamics of China.
Guang Chen: He received his M. S. degree in Mechanics in 1999 from Department of Mechanics and Engineering Science of Peking University. He is currently pursuing a Ph. D in Johns Hopkins University.
Xiang-Dong Du: He received his M. S. degree in Mechanics in 1996 from Department of Mechanics and Engineering Science of Peking University. Since his graduation he worked at State Key Laboratory for Turbulence Research, Peking University until 1998. Since 1999 he studies in Concordia University to pursue a Ph. D degree.
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Wei, Q.D., Chen, G. & Du, X.D. An experimental study on the structure of juncture flows. J Vis 3, 341–348 (2001). https://doi.org/10.1007/BF03181728
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DOI: https://doi.org/10.1007/BF03181728