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.

引用

页数：14

共 26 条

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