Classifications of flow pattern on three circular cylinders in   equilateral-triangular arrangements

doi:10.1016/S0167-6105(00)00091-X

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	Classifications of flow pattern on three circular cylinders in equilateral-triangular arrangements
	Gu, ZF ; Sun, TF
刊名	journal of wind engineering and industrial aerodynamics
	2001
关键词	circular cylinders pressure distribution flow visualization wake structure flow pattern CROSS-FLOW INTERFERENCE
DOI	10.1016/S0167-6105(00)00091-X
英文摘要	Classifications of flow pat tern on three parallel circular cylinders in equilateral-triangular arrangements in cross uniform flow were investigated by wind tunnel tests. The spacing ratios were in the range of 1.7 less than or equal to N/d less than or equal to 5.0, where N is the distance between the centers of adjacent cylinders, d the diameter of the cylinders. Both the experiments of pressure distributions on three circular cylinders at Reynolds number 5.5 x 10(4) and flow visualizations at Reynolds number 1.4 x 10(4) were carried out. It shows that the angles of incident Bow strongly influence the flow patterns, and therefore the pressure distributions on any one of the cylinders. Due to the interference of the shear layers and/or wakes, the most complex features of pressure distributions can be found on the cylinder located downstream. As for the different levels of interference regarding the influence of spacing ratio, mainly four different affected regions, i.e., effects of small, transition, medium, and larger spacing can be identified. Within the small spacing ratios, i.e., 1.7 less than or equal to N/d less than or equal to 2.2, three basic types of interference can be classified. The three basic types are interference of proximity, shear layer reattachment and wake. Furthermore, seven steps of Bow pattern can be subdivided as the angles of incident flow vary from 0 degrees to 60 degrees. (C) 2001 Elsevier Science Ltd. All rights reserved.; Engineering, Civil; Mechanics; SCI(E); EI; 13; ARTICLE; 6; 553-568; 89
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154985]
专题	工学院
推荐引用方式 GB/T 7714	Gu, ZF,Sun, TF. Classifications of flow pattern on three circular cylinders in equilateral-triangular arrangements[J]. journal of wind engineering and industrial aerodynamics,2001.
APA	Gu, ZF,&Sun, TF.(2001).Classifications of flow pattern on three circular cylinders in equilateral-triangular arrangements.journal of wind engineering and industrial aerodynamics.
MLA	Gu, ZF,et al."Classifications of flow pattern on three circular cylinders in equilateral-triangular arrangements".journal of wind engineering and industrial aerodynamics (2001).