三圆柱绕流的时均压力分布和气动力  

THE TIME-MEAN PRESSURE DISTRIBUTION AND AERODYNAMICS FORCES OF THREE EQUISPACED CIRCULAR CYLINDERS

作　　者：徐有恒[1] 程兆 张厚勇 严育兵[1] 韩敏[1] 

机构地区：[1]复旦大学

出　　处：《气动实验与测量控制》1993年第2期18-26,共9页

基　　金：国家自然科学基金

摘　　要：亚临界状态下绕等边三角形排列的三圆柱的流动,其中心距的变化范围为1.5～4.0d(d为圆柱直径)。测量了不同间距下各圆柱的压力分布并推算了气动力。结果表明,在小间距时,三圆柱间的干扰是严重的,圆柱表面的压力分布有相当大的改变,局部地区有很强的负压;除阻力之外,还产生了相当大的横向力。In this paper,the flow interference of three equispacedcircular cylinders has been studied.The distance between each two cyl-inders is in range of 1.5～4.0 times of the diameter of the cylinders.The time-mean pressure distribution was measured and the aerodynam-ics forces were determined.The results show that the interference isserious when the Cylinders are closely.The pressure distribution changesso much than that of the single cylinder.Besides the drag force,thelateral force acted on the cylinders exists in some special arrangement.The lateral forces may be repulsive or attractive in accordingto thewind direction.Some areas of the cylinders surface may be sufferedvery strong negative pressure.

关 键 词：圆柱绕流 流动干扰 压力分布 

分 类 号：V211.11[航空宇航科学与技术—航空宇航推进理论与工程]