VORTICITY SHEDDING AND ACOUSTIC-RESONANCE IN AN IN-LINE TUBE BUNDLE .1. VORTICITY SHEDDING

被引：56
|
作者：
ZIADA, S
OENGOREN, A
机构：
[1] Laboratory for Vibrations and Acoustics, Dept 1512
来源：
JOURNAL OF FLUIDS AND STRUCTURES | 1992年 / 6卷 / 03期
关键词：
D O I：
10.1016/0889-9746(92)90010-Z
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
An in-line tube array with intermediate tube spacings was tested in a wind tunnel and a water channel. Extensive flow visualization and correlation measurements were carried out to reveal the nature of the vorticity-shedding excitation. The instability of the jet issuing between the tubes is found to be the source of the vorticity-shedding excitation. The jet instability occurs at its symmetric mode, whereupon large-scale vortices are formed symmetrically on both sides of each flow lane. Since the jet instability in each flow lane is 180° out of phase with that in the neighbouring lanes, vortices are formed antisymmetrically in the tube wakes. © 1992.
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页码：271 / +
页数：1
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