Retro lock-in in the wake-induced vibration of a pair of tandem cylinders in close proximity

被引：0
作者：
Assi, Gustavo R. S. [1 ]
机构：
[1] Univ Sao Paulo, Dept Naval Architecture & Ocean Engn, Escola Politecn, Sao Paulo, Brazil
来源：
JOURNAL OF FLUIDS AND STRUCTURES | 2025年 / 133卷
基金：
巴西圣保罗研究基金会;
关键词：
Vortex-induced vibration; Wake-induced vibration; 2; CIRCULAR-CYLINDERS; FLOW;
D O I：
10.1016/j.jfluidstructs.2025.104274
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
An experimental investigation performed at moderate Reynolds numbers was set to study how a pair of tandem cylinders can be excited into flow-induced vibrations by different interference mechanisms as a function of longitudinal spacings varying from 2 to 10 diameters. Results showed that the downstream cylinder could develop vortex-induced vibration (VIV) caused by its own vortex shedding, wake-induced vibration (WIV) caused by a developed wake formed in the gap, and gap-flow-switching. A combination of these mechanisms appeared for cases under close proximity. For a specific spacing of 3 diameters, the vibration of the downstream cylinder was able to synchronize the vortex shedding from the upstream, fixed body. We call this mechanism "retro lock-in" since the vortex-formation process of a bluff body was governed by the dynamics of another body located further downstream.
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页数：14
相关论文
共 26 条
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