Vortex-induced vibration forever even with high structural damping

Peng Han; Emmanuel De Langre; Mark C. Thompson; Kerry Hourigan; Jisheng Zhao

doi:10.1017/jfm.2023.268

Vortex-induced vibration forever even with high structural damping

Peng Han, Emmanuel De Langre, Mark C. Thompson, Kerry Hourigan, Jisheng Zhao

Mechanical & Aerospace Engineering

Research output: Contribution to journal › Article › Research › peer-review

17 Citations (Scopus)

Abstract

This study investigates the effect of structural damping on vortex-induced vibration (VIV) of a circular cylinder when the mass ratio is below its critical value. It is confirmed by water-channel experiments and a reduced-order model (ROM) that the previously identified phenomenon of VIV forever, i.e. resonance oscillations at any reduced velocity, persists even with high structural damping. Of interest, the ROM results reveal that the wake mode for VIV forever is unstable with a constant positive growth rate with increasing reduced velocity, while the experimental results suggest that VIV forever is associated with a synchronisation between the non-stationary cylinder vibration frequency and the vortex-shedding frequency.

Original language	English
Article number	A13
Number of pages	16
Journal	Journal of Fluid Mechanics
Volume	962
DOIs	https://doi.org/10.1017/jfm.2023.268
Publication status	Published - 10 May 2023

Keywords

flow-structure interactions
vortex instability
vortex shedding

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10.1017/jfm.2023.268

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title = "Vortex-induced vibration forever even with high structural damping",

abstract = "This study investigates the effect of structural damping on vortex-induced vibration (VIV) of a circular cylinder when the mass ratio is below its critical value. It is confirmed by water-channel experiments and a reduced-order model (ROM) that the previously identified phenomenon of VIV forever, i.e. resonance oscillations at any reduced velocity, persists even with high structural damping. Of interest, the ROM results reveal that the wake mode for VIV forever is unstable with a constant positive growth rate with increasing reduced velocity, while the experimental results suggest that VIV forever is associated with a synchronisation between the non-stationary cylinder vibration frequency and the vortex-shedding frequency.",

keywords = "flow-structure interactions, vortex instability, vortex shedding",

author = "Peng Han and {De Langre}, Emmanuel and Thompson, {Mark C.} and Kerry Hourigan and Jisheng Zhao",

note = "Funding Information: This work was supported by the Australian Research Council (J.Z., Discovery Early Career Researcher Award DE200101650; M.C.T., Discovery Project DP190103388; K.H. and M.C.T., Discovery Project DP200100704; and K.H. and J.Z., Discovery Project DP210100990). Publisher Copyright: {\textcopyright} The Author(s), 2023. Published by Cambridge University Press.",

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AU - Han, Peng

AU - De Langre, Emmanuel

AU - Thompson, Mark C.

AU - Hourigan, Kerry

AU - Zhao, Jisheng

N1 - Funding Information: This work was supported by the Australian Research Council (J.Z., Discovery Early Career Researcher Award DE200101650; M.C.T., Discovery Project DP190103388; K.H. and M.C.T., Discovery Project DP200100704; and K.H. and J.Z., Discovery Project DP210100990). Publisher Copyright: © The Author(s), 2023. Published by Cambridge University Press.

PY - 2023/5/10

Y1 - 2023/5/10

N2 - This study investigates the effect of structural damping on vortex-induced vibration (VIV) of a circular cylinder when the mass ratio is below its critical value. It is confirmed by water-channel experiments and a reduced-order model (ROM) that the previously identified phenomenon of VIV forever, i.e. resonance oscillations at any reduced velocity, persists even with high structural damping. Of interest, the ROM results reveal that the wake mode for VIV forever is unstable with a constant positive growth rate with increasing reduced velocity, while the experimental results suggest that VIV forever is associated with a synchronisation between the non-stationary cylinder vibration frequency and the vortex-shedding frequency.

AB - This study investigates the effect of structural damping on vortex-induced vibration (VIV) of a circular cylinder when the mass ratio is below its critical value. It is confirmed by water-channel experiments and a reduced-order model (ROM) that the previously identified phenomenon of VIV forever, i.e. resonance oscillations at any reduced velocity, persists even with high structural damping. Of interest, the ROM results reveal that the wake mode for VIV forever is unstable with a constant positive growth rate with increasing reduced velocity, while the experimental results suggest that VIV forever is associated with a synchronisation between the non-stationary cylinder vibration frequency and the vortex-shedding frequency.

KW - flow-structure interactions

KW - vortex instability

KW - vortex shedding

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U2 - 10.1017/jfm.2023.268

DO - 10.1017/jfm.2023.268

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VL - 962

JO - Journal of Fluid Mechanics

JF - Journal of Fluid Mechanics

M1 - A13

ER -

Vortex-induced vibration forever even with high structural damping

Abstract

Keywords

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Other files and links

The Mechanisms determining the Rolling Motions of Bodies

Intelligent active control of flow-induced vibration

Understanding flapping aerodynamics in non-optimal environments

Cite this

Vortex-induced vibration forever even with high structural damping

Abstract

Keywords

Access to Document

Other files and links

Projects

The Mechanisms determining the Rolling Motions of Bodies

Intelligent active control of flow-induced vibration

Understanding flapping aerodynamics in non-optimal environments

Cite this