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A platform for research: civil engineering, architecture and urbanism
Aerodynamic Damping Model for Vortex-induced Vibration of Suspended Circular Cylinder in Uniform Flow
https://orcid.org/0000-0002-3334-0007
https://orcid.org/0000-0003-0473-2631
Abstract This study addresses modeling of aerodynamic damping for a two-dimensional (2-D) suspended circular cylinder in uniform flow, and aims to provide an appropriate model for predicting vortex-induced vibration (VIV) of a circular cylinder. Full-scale and wind-tunnel tests have revealed that the crosswind response of a circular cylinder such as a steel chimney calculated by aerodynamic damping models recommended in several international codes is dramatically overestimated for most cylinders with Scruton numbers less than 15, so these models are re-studied and discussed. This paper proposes an improved aerodynamic damping model that shows good agreement with experimental results. The proposed model is further verified by estimating the transverse displacement responses of suspended circular cylinders tested in uniform flow and the predicted results are promising. The proposed model provides a theoretical basis that can be used to develop an aerodynamic damping model for bridge decks as well as other structures.
Highlights Various aerodynamic damping models of the 2-D circular cylinder in uniform flow are re-examined and discussed. The underlying reasons of lower accuracy of the predicted VIV response by some aerodynamic damping model are analyzed. A new aerodynamic damping model is proposed by introducing a generalized Van der Pol equation and is validated.
Aerodynamic Damping Model for Vortex-induced Vibration of Suspended Circular Cylinder in Uniform Flow
https://orcid.org/0000-0002-3334-0007
https://orcid.org/0000-0003-0473-2631
Abstract This study addresses modeling of aerodynamic damping for a two-dimensional (2-D) suspended circular cylinder in uniform flow, and aims to provide an appropriate model for predicting vortex-induced vibration (VIV) of a circular cylinder. Full-scale and wind-tunnel tests have revealed that the crosswind response of a circular cylinder such as a steel chimney calculated by aerodynamic damping models recommended in several international codes is dramatically overestimated for most cylinders with Scruton numbers less than 15, so these models are re-studied and discussed. This paper proposes an improved aerodynamic damping model that shows good agreement with experimental results. The proposed model is further verified by estimating the transverse displacement responses of suspended circular cylinders tested in uniform flow and the predicted results are promising. The proposed model provides a theoretical basis that can be used to develop an aerodynamic damping model for bridge decks as well as other structures.
Highlights Various aerodynamic damping models of the 2-D circular cylinder in uniform flow are re-examined and discussed. The underlying reasons of lower accuracy of the predicted VIV response by some aerodynamic damping model are analyzed. A new aerodynamic damping model is proposed by introducing a generalized Van der Pol equation and is validated.
Aerodynamic Damping Model for Vortex-induced Vibration of Suspended Circular Cylinder in Uniform Flow
https://orcid.org/0000-0002-3334-0007
https://orcid.org/0000-0003-0473-2631
Abstract This study addresses modeling of aerodynamic damping for a two-dimensional (2-D) suspended circular cylinder in uniform flow, and aims to provide an appropriate model for predicting vortex-induced vibration (VIV) of a circular cylinder. Full-scale and wind-tunnel tests have revealed that the crosswind response of a circular cylinder such as a steel chimney calculated by aerodynamic damping models recommended in several international codes is dramatically overestimated for most cylinders with Scruton numbers less than 15, so these models are re-studied and discussed. This paper proposes an improved aerodynamic damping model that shows good agreement with experimental results. The proposed model is further verified by estimating the transverse displacement responses of suspended circular cylinders tested in uniform flow and the predicted results are promising. The proposed model provides a theoretical basis that can be used to develop an aerodynamic damping model for bridge decks as well as other structures.
Highlights Various aerodynamic damping models of the 2-D circular cylinder in uniform flow are re-examined and discussed. The underlying reasons of lower accuracy of the predicted VIV response by some aerodynamic damping model are analyzed. A new aerodynamic damping model is proposed by introducing a generalized Van der Pol equation and is validated.
Aerodynamic Damping Model for Vortex-induced Vibration of Suspended Circular Cylinder in Uniform Flow
Guo, Kunpeng (author) / Yang, Qingshan (author) / Liu, Min (author) / Li, Bo (author)
2020-12-21
Article (Journal)
Electronic Resource
English
Vortex induced vibration of circular cylinder
| Elsevier | 1993
Vortex induced vibration of circular cylinder
| Online Contents | 1993