Fluid–structure interaction modes under complex unsteady vortices: A review

HAN Peng; ZHANG Junduo; LI Yiran; FAN Dixia; HUANG Weixi

doi:10.6052/1000-0992-25-022

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Han P, Zhang J D, Li Y R, Fan D X, Huang W X. Fluid–structure interaction modes under complex unsteady vortices: A review. Advances in Mechanics, in press doi: 10.6052/1000-0992-25-022

Citation:

Han P, Zhang J D, Li Y R, Fan D X, Huang W X. Fluid–structure interaction modes under complex unsteady vortices: A review. Advances in Mechanics, in press doi: 10.6052/1000-0992-25-022

Han P, Zhang J D, Li Y R, Fan D X, Huang W X. Fluid–structure interaction modes under complex unsteady vortices: A review. Advances in Mechanics, in press doi: 10.6052/1000-0992-25-022

Citation:

Han P, Zhang J D, Li Y R, Fan D X, Huang W X. Fluid–structure interaction modes under complex unsteady vortices: A review. Advances in Mechanics, in press doi: 10.6052/1000-0992-25-022

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Fluid–structure interaction modes under complex unsteady vortices: A review

doi: 10.6052/1000-0992-25-022 cstr: 32046.14.1000-0992-25-022

HAN Peng^{1, 2},
ZHANG Junduo^{1, 3},
LI Yiran²,
FAN Dixia⁴,
HUANG Weixi^{1
,
,}

1.
Applied Mechanics Laboratory, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
2.
State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Xi’an Jiaotong University, Xi’an 710049, China
3.
Department of Applied Mechanics, College of Science, China Agricultural University, Beijing 100083, China
4.
School of Engineering, Westlake University, Hangzhou 310030, China

More Information

Corresponding author: hwx@tsinghua.edu.cn
Received Date: 2025-08-24
Accepted Date: 2026-02-25

Available Online: 2026-03-09

Abstract

Abstract

In complex unsteady wakes, the fluid–structure interaction (FSI) modes can differ significantly from those under uniform flows, often involving rich physical mechanisms. This paper reviews recent advances in three representative FSI phenomena: Vortex-induced vibration (VIV) of cylinders, flapping of flexible plates, and locomotion of swimming/flying organisms. These phenomena are widely observed in both nature and engineering applications and span self-excited, active, and hybrid FSI modes. First, we compare the response modes under uniform and unsteady wake inflows. Results show that incoming vortices can substantially amplify vibration amplitudes of cylinders and plates, potentially triggering new instabilities. In contrast, biological swimmers may actively exploit incoming vortices by modulating their motions to enhance propulsion efficiency. Furthermore, this paper discusses potential applications of such FSI modes in complex wake flows, including enhanced energy harvesting from flow-induced vibrations and the development of bioinspired robots with improved sensing and decision-making capabilities. Finally, the challenges and future research directions in this area are outlined to guide further exploration.
- fluid−structure interaction,
- complex flow,
- flow-induced vibration,
- biological swimming/flying

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References(343)

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