Wind Tunnel Tests on Aerodynamic Characteristics of Moving Vehicles on Bridge Decks under Skew Tail-Wind

被引：0
|
作者：
Han X. [1 ]
Xiang H. [1 ,2 ]
Li Y. [1 ,2 ]
机构：
[1] School of Ciril Engineering, Southwest Jiaotong University, Chengdu
[2] Wind Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2022年 / 57卷 / 01期
关键词：
Aerodynamic characteristic; Moving vehicle model; Skew tail-wind; Wind barrier; Wind tunnel test;
D O I：
10.3969/j.issn.0258-2724.20200649
中图分类号：
学科分类号：
摘要：
The effect of skew tail-wind on driving safety cannot be ignored. To investigate the effect of skew tail-wind, the aerodynamic characteristics of the vehicle under the action of skew tail-wind were tested by using a wind tunnel test device of the moving vehicle model, aiming at the vehicle and bridge models with the scale ratio of 1/20. The effects of wind speed, wind direction and wind barrier on the aerodynamic characteristic of moving vehicle were discussed. The results show that the five-component coefficients of moving vehicle well agree with different wind speeds. The lateral drag coefficient, lift coefficient and nodding moment coefficient decrease with the increase of the yaw angle. The skew tail-wind has a significantly effect on the lift coefficients when the yaw angle is small. The wind barrier makes the aerodynamic characteristics of the vehicle close to 0, but it obviously transforms the change law of the aerodynamic coefficient of the vehicle with the yaw angle. After the wind barrier is installed, the change rate of drag coefficient of vehicle is affected by the yaw angle, vehicle speed and wind speed. Copyright ©2022 JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY. All rights reserved.
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页码：99 / 105
页数：6
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