六维力/扭矩传感器用于在静止龙卷风下的不同风角的高速列车的空气动力学特性研究
Mu Li1,2, Yecheng Wu1,2, Jiankun Gan1,2
1Beijing Jiaotong University, Beijing, China.
PloS one
|March 21, 2024
概括
在模拟龙卷风事件期间,风角显著影响高速列车的空气动力学. 了解这些影响对于在龙卷风威胁铁路网络时确保火车安全至关重要.
科学领域:
- 空气动力学 航空动力学
- 流体力学 流体力学 流体力学
- 铁路工程 铁路工程是指铁路工程.
背景情况:
- 高速列车面临着来自风等极端天气事件的运行风险.
- 之前的研究还没有完全详细地描述火车上的空气动力学力量,从旋风般的风角度来看.
研究的目的:
- 为了研究不同风角对缩放高速列车模型空气动力学特征的影响.
- 为了量化火车在模拟龙卷风条件下所经历的力量和时刻.
主要方法:
- 利用龙卷风模拟器将1:150尺寸的高速列车模型暴露在受控制的风力条件下.
- 采用六维的力/扭矩传感器来测量空气动力学力和矩.
- 与火车模型相比,改变了风的角度,以评估其影响.
主要成果:
- 风角明显影响力和矩系数的平均值和标准偏差.
- 特定的风角 (例如,运输60°,90°;头部0°,15°,30°) 显示了转矩系数的明显变化.
- 列车头模型的倾斜矩系数的标准偏差在60°,75°和90°的角度有显著的变化.
结论:
- 这项研究提供了关键数据,即龙卷风事件期间不同风角如何影响高速列车的空气动力学.
- 这些发现对于加强风易发地区高速列车的运行安全协议和结构设计考虑至关重要.
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