湍流横风中高架桥上高速列车的气动特性试验研究(英文)
发布时间:2021-09-02 05:53
基于缩尺比为1:25的节段模型风洞试验,对湍流横风中高架桥上高速列车的气动特性进行研究。在均匀流和湍流条件下,对-6°至6°风攻角范围内迎风和背风轨道上的典型车头和车身断面进行测压试验,并采用积分法计算相应的气动力系数。实验结果表明,轨道位置对高速列车的平均气动特性有影响,特别是对车身断面的平均气动特性。与迎风轨道处相比,背风轨道处的脉动压力受桥梁干扰影响明显。湍流对车头断面的影响小于其对车身断面的影响。列车车头平均气动力系数与风攻角几乎呈负相关,背风轨道上的车头断面尤其如此。此外,侧向力在决定相应的列车头车倾覆力矩时起着关键作用,尤其是对车身截面。
【文章来源】:Journal of Central South University. 2020,27(08)EISCICSCD
【文章页数】:14 页
【文章目录】:
1 Introduction
2 Experimental setup
2.1 Measurement system
2.2 Wind flow characteristic
3 Results and discussion
3.1 Wind pressure coefficient
3.2 Mean aerodynamic coefficient of vehicle section
3.3 Contribution of each part to mean aerodynamic force coefficient
4 Results and discussion
4.1 Mean pressure coefficient of HST
4.2 Fluctuating pressure coefficient of HST
4.3 Mean aerodynamic force coefficient of HST
4.4 Contribution of each part to mean train-head force coefficient
4.5 Contribution of each part to mean train-body force coefficient
5 Conclusions
本文编号:3378444
【文章来源】:Journal of Central South University. 2020,27(08)EISCICSCD
【文章页数】:14 页
【文章目录】:
1 Introduction
2 Experimental setup
2.1 Measurement system
2.2 Wind flow characteristic
3 Results and discussion
3.1 Wind pressure coefficient
3.2 Mean aerodynamic coefficient of vehicle section
3.3 Contribution of each part to mean aerodynamic force coefficient
4 Results and discussion
4.1 Mean pressure coefficient of HST
4.2 Fluctuating pressure coefficient of HST
4.3 Mean aerodynamic force coefficient of HST
4.4 Contribution of each part to mean train-head force coefficient
4.5 Contribution of each part to mean train-body force coefficient
5 Conclusions
本文编号:3378444
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