The streamlined box girder is widely used in long-span bridges, yet the impact of Reynolds number effects on its aerodynamic characteristics is still not fully understood. This study focused on the streamlined box girder of the Ningbo Xiangshan Harbor Bridge, using a 1:15 scale model tested in the 8 × 6 m wind tunnel in Mianyang, China, under various angles of attack and high-Reynolds numbers (up to Re = 1.09 × 106). The findings indicate that the mean aerodynamic force coefficient exhibits significant Reynolds number effects at positive angles of attack, with maximum variations reaching 84.00%. The fluctuating force coefficient shows a trend of initially decreasing and then increasing with the increase in Reynolds number across all angles of attack. As the angle of attack increases from 0° to 8°, the distribution of mean and fluctuating wind pressure changes significantly. The mean wind pressure coefficient on the upper surface of the upstream nozzle decreases significantly with increasing Reynolds number at positive angles, with the rate of decrease increasing with the angle of attack and reaching a maximum of 0.81, which explains the Reynolds number effect on the mean aerodynamic force coefficient. At the +5° angle of attack, the fluctuating wind pressure distribution decreases and then increases with Reynolds number; at other angles, it generally decreases with increasing Reynolds number. The wind pressure correlation between circumferential measurement points increases with Reynolds number. The spanwise correlations of the lift and moment coefficients exhibit the same trend, with maximum increases of 0.60 and 0.69, respectively.
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January 2025
Research Article|
January 02 2025
On the effects of Reynolds number on the aerodynamic characteristics of streamlined box girders
Special Collection:
Flow and Civil Structures
Yuan Han (韩原);
Yuan Han (韩原)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft)
1
School of Civil Engineering, Shijiazhuang Tiedao University
, Shijiazhuang 050043, China
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Yifei Sun (孙一飞);
Yifei Sun (孙一飞)
(Funding acquisition, Investigation, Supervision, Writing – review & editing)
1
School of Civil Engineering, Shijiazhuang Tiedao University
, Shijiazhuang 050043, China
2
State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University
, Shijiazhuang 050043, China
3
Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province
, Shijiazhuang 050043, China
4
Key Laboratory of Roads and Railway Engineering Safety Control, Ministry of Education
, Shijiazhuang 050043, China
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Qingkuan Liu (刘庆宽)
;
Qingkuan Liu (刘庆宽)
a)
(Conceptualization, Funding acquisition, Methodology, Resources, Supervision, Writing – review & editing)
1
School of Civil Engineering, Shijiazhuang Tiedao University
, Shijiazhuang 050043, China
2
State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University
, Shijiazhuang 050043, China
3
Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province
, Shijiazhuang 050043, China
4
Key Laboratory of Roads and Railway Engineering Safety Control, Ministry of Education
, Shijiazhuang 050043, China
a)Author to whom correspondence should be addressed: [email protected]
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Hongmiao Jing (靖洪淼)
;
Hongmiao Jing (靖洪淼)
(Investigation, Supervision)
1
School of Civil Engineering, Shijiazhuang Tiedao University
, Shijiazhuang 050043, China
2
State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University
, Shijiazhuang 050043, China
3
Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province
, Shijiazhuang 050043, China
4
Key Laboratory of Roads and Railway Engineering Safety Control, Ministry of Education
, Shijiazhuang 050043, China
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Hanjie Huang (黄汉杰);
Hanjie Huang (黄汉杰)
(Investigation, Supervision)
5
China Aerodynamics Research and Development Center
, Mianyang 621000, China
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Zhen Li (李震);
Zhen Li (李震)
(Investigation)
6
School of Civil Engineering, Central South University
, Changsha 410075, China
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Yangxue Wang (王仰雪)
Yangxue Wang (王仰雪)
(Investigation)
7
Research Center for Wind Engineering and Engineering Vibration, Guangzhou University
, Guangzhou 510006, China
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a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 37, 015114 (2025)
Article history
Received:
November 04 2024
Accepted:
December 08 2024
Citation
Yuan Han, Yifei Sun, Qingkuan Liu, Hongmiao Jing, Hanjie Huang, Zhen Li, Yangxue Wang; On the effects of Reynolds number on the aerodynamic characteristics of streamlined box girders. Physics of Fluids 1 January 2025; 37 (1): 015114. https://doi.org/10.1063/5.0246746
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