教師資料查詢 | 類別: 期刊論文 | 教師: 盧博堅 LU PO-CHIEN (瀏覽個人網頁)

標題:Vortex Shedding from Fixed and Oscillating Rectangular Prisms in Shear Flows
學年86
學期1
出版(發表)日期1997/09/01
作品名稱Vortex Shedding from Fixed and Oscillating Rectangular Prisms in Shear Flows
作品名稱(其他語言)剪力流中矩柱之渦散現象研究
著者Lu, Po-chien; Cheng, Chi-ming; Liang, Horng-sheng
單位淡江大學水資源及環境工程學系; 淡江大學土木工程學系
出版者Taipei : Chinese Institute of Chemical Engineers
著錄名稱、卷期、頁數Journal of the Chinese Institute of Engineers=中國工程學刊 20(5), pp.501-509
摘要The main focus of this paper is to study the results of experiments on six different rectangular prisms with varied side ratios, with and without forced oscillation, displaced in two shear free streams and one uniform flow. The setting of free stream shear parameters f3=dU!dyxD/Uc are .24 and .32. With respect to vortex shedding phenomena, a comparison between shear flows and uniform flows is also part of the focus. Experimental results indicate that disturbance on the twodimensional vortex shedding of the uniform flow is caused by the longitudinal vortex of the shear flow gradient. As a result, a spanwise distribution of cells among the vortex shedding frequencies is created. Increases in the side ratios of the rectangular prisms can cause a shifting of cell boundaries toward the high-speed end. As shear parameters for the same prism increase, the cell boundaries move toward the lowspeed end. During oscillation, differences arise between the vorticity structures of cells, and the vortices of each cell are more unified, with improvements in correlation.
關鍵字Vortex shedding;Shear flow;Wake cell boundary;渦散;剪力流;格元分界
語言英文
ISSN0253-3839
期刊性質國內
收錄於SCI;EI
產學合作
通訊作者
審稿制度
國別中華民國
公開徵稿
出版型式紙本
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