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Title: Numerical evaluation of vortex-induced vibration amplitude of a box girder bridge using forced oscillation method
Authors: Noguchi, Kyohei  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-2017-5321 (unconfirmed)
Ito, Yasuaki
Yagi, Tomomi  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-0383-6386 (unconfirmed)
Author's alias: 野口, 恭平
八木, 知己
Keywords: Large eddy simulation
Flutter derivatives
Vortex-induced vibration
Spanwise domain size
Reynolds number
Issue Date: Jan-2020
Publisher: Elsevier BV
Journal title: Journal of Wind Engineering and Industrial Aerodynamics
Volume: 196
Thesis number: 104029
Abstract: The evaluation of the amplitude of the vortex-induced vibration (VIV) of a long-span bridge is necessary to implement a wind-resistant design. The development of high-performance computing has led to the use of computational fluid dynamics (CFD) in this domain, but the evaluation of VIV amplitude using the free vibration method in CFD incurs a high computational cost because of the small negative aerodynamic damping in the wind speed region of VIV. In this study, the use of flutter derivatives based on the forced oscillation method with a large eddy simulation is proposed for evaluating the VIV amplitude to reduce computational cost. The heaving VIV amplitude of a box girder was evaluated using simulated flutter derivatives and the results were validated by corresponding free vibration wind tunnel tests. Because the aerodynamic damping obtained by the flutter derivatives showed a clear dependence on the oscillation amplitude, the VIV amplitude can be evaluated using the proposed method. The effects of the spanwise domain size and Reynolds number were also significant.
Rights: © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
The full-text file will be made open to the public on 1 January 2022 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
This is not the published version. Please cite only the published version.
URI: http://hdl.handle.net/2433/260549
DOI(Published Version): 10.1016/j.jweia.2019.104029
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