CFD simulations of a suspension bridge deck for different deck shapes with railings and vortex mitigating devices

I. Kusano; J. B. Jakobsen; J. T. Snæbjörnsson

doi:10.1088/1757-899X/700/1/012003

CFD simulations of a suspension bridge deck for different deck shapes with railings and vortex mitigating devices

I. Kusano^*, J. B. Jakobsen, J. T. Snæbjörnsson

^*Corresponding author for this work

Department of Engineering

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

Aerodynamic response of a single-box suspension bridge girder is investigated using CFD simulations. The importance of including railings and vortex mitigating devices such as guide vanes and a spoiler in the simulations is explored since they alter the flow field around the deck greatly. The paper compares results from a bare deck section and a section with mitigating devices. A clear vortex shedding observed for the bare deck section is suppressed by the use of mitigating devices and the aerodynamic force coefficients are very different between these cases. The effect of varying deck width is also studied. Flutter derivatives are defined based on quasi-steady formulation and flutter velocity is computed for each section. The section with the largest width to depth ratio has the best performance against flutter. This study is an initial phase of multi-fidelity optimization of bridge deck shape considering aerodynamic constraints.

Original language	English
Article number	012003
Journal	IOP Conference Series: Materials Science and Engineering
Volume	700
Issue number	1
DOIs	https://doi.org/10.1088/1757-899X/700/1/012003
Publication status	Published - 26 Nov 2019
Event	2nd Conference of Computational Methods in Offshore Technology and 1st Conference of Oil and Gas Technology, COTech and OGTech 2019 - Stavanger, Norway Duration: 27 Nov 2019 → 29 Nov 2019

Bibliographical note

Funding Information:
This research is financed by the European Union’s Horizon 2020 research and innovation program under Marie Sklodowska-Curie individual fellowship, grant agreement 794646-MFOptBF-H2020-MSCA-IF-2017. The authors would like to thank the Norwegian Public Road Administration and Svend Ole Hansen ApS for the information on the bridge deck geometry and the results of the wind tunnels tests with a section model of Julsundet Bridge. The authors also would like to thank Dr. Guang Yin at the University of Stavanger for his valuable advices on CFD simulations.

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.

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Cite this

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abstract = "Aerodynamic response of a single-box suspension bridge girder is investigated using CFD simulations. The importance of including railings and vortex mitigating devices such as guide vanes and a spoiler in the simulations is explored since they alter the flow field around the deck greatly. The paper compares results from a bare deck section and a section with mitigating devices. A clear vortex shedding observed for the bare deck section is suppressed by the use of mitigating devices and the aerodynamic force coefficients are very different between these cases. The effect of varying deck width is also studied. Flutter derivatives are defined based on quasi-steady formulation and flutter velocity is computed for each section. The section with the largest width to depth ratio has the best performance against flutter. This study is an initial phase of multi-fidelity optimization of bridge deck shape considering aerodynamic constraints.",

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N1 - Funding Information: This research is financed by the European Union’s Horizon 2020 research and innovation program under Marie Sklodowska-Curie individual fellowship, grant agreement 794646-MFOptBF-H2020-MSCA-IF-2017. The authors would like to thank the Norwegian Public Road Administration and Svend Ole Hansen ApS for the information on the bridge deck geometry and the results of the wind tunnels tests with a section model of Julsundet Bridge. The authors also would like to thank Dr. Guang Yin at the University of Stavanger for his valuable advices on CFD simulations. Publisher Copyright: © Published under licence by IOP Publishing Ltd.

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AB - Aerodynamic response of a single-box suspension bridge girder is investigated using CFD simulations. The importance of including railings and vortex mitigating devices such as guide vanes and a spoiler in the simulations is explored since they alter the flow field around the deck greatly. The paper compares results from a bare deck section and a section with mitigating devices. A clear vortex shedding observed for the bare deck section is suppressed by the use of mitigating devices and the aerodynamic force coefficients are very different between these cases. The effect of varying deck width is also studied. Flutter derivatives are defined based on quasi-steady formulation and flutter velocity is computed for each section. The section with the largest width to depth ratio has the best performance against flutter. This study is an initial phase of multi-fidelity optimization of bridge deck shape considering aerodynamic constraints.

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CFD simulations of a suspension bridge deck for different deck shapes with railings and vortex mitigating devices

Abstract

Bibliographical note

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