| 基于大涡模拟的高速列车横风运行安全性研究 |
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| 引用本文： | 刘加利,于梦阁,张继业,张卫华.基于大涡模拟的高速列车横风运行安全性研究[J].铁道学报,2011,33(4). |
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| 作者姓名： | 刘加利 于梦阁 张继业 张卫华 |
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| 作者单位： | 西南交通大学,牵引动力国家重点实验室,四川,成都,610031 |
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| 基金项目： | 国家重点基础研究发展计划，"十一五"国家科技支撑计划 |
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| 摘 要： | 结合高速列车空气动力学和多体系统动力学,研究横风对高速列车运行安全性的影响.首先采用大涡模拟计算方法,研究了不同横风风速下高速列车非定常气动载荷的时域及频域特性,列车周围流场结构及相应的非定常流场特性.然后建立高速列车多体系统动力学模型,将得到的气动力作为外加载荷作用于列车上,研究了不同横风风速下定常气动力和非定常气动力对直线上高速列车运行安全性的影响特性,计算结果表明,与定常气动力相比,作用于车身上的非定常气动力使列车的振动加剧.最后参照高速列车的安全运行标准,对高速列车的安全运行进行分析,为横风下高速列车的安全运行提供参考.
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| 关 键 词： | 高速列车 横风 大涡模拟 非定常气动力 运行安全性 |
Study On Running Safety of High-speed Train under Crosswind by Large Eddy Simulation |
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| LIU Jia-li,YU Meng-ge,ZHANG Ji-ye,ZHANG Wei-hua.Study On Running Safety of High-speed Train under Crosswind by Large Eddy Simulation[J].Journal of the China railway Society,2011,33(4). |
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| Authors: | LIU Jia-li YU Meng-ge ZHANG Ji-ye ZHANG Wei-hua |
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| Institution: | LIU Jia-li,YU Meng-ge,ZHANG Ji-ye,ZHANG Wei-hua(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | The aerodynamics and multi-body system dynamics of the high-speed train are combined in this paper to study the effects of crosswinds on the running safety of the high-speed train.Firstly,the large eddy simulation(LES) is used to study the time and frequency domain characteristics of the unsteady aerodynamic forces on the high-speed train,the structure of the flow field around the train and the characteristics of the unsteady flow field under different crosswind speeds.Then the multi-body system dynamics mo... |
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| Keywords: | high-speed train cross wind large eddy simulation(LES) unsteady aerodynamic force running safety |
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