| 路堤倾角变化对高速列车侧风运行气动特性影响 |
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| 引用本文： | 罗建斌,胡媛媛,杨建恒,胡爱军.路堤倾角变化对高速列车侧风运行气动特性影响[J].计算物理,2013,30(5):675-682. |
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| 作者姓名： | 罗建斌 胡媛媛 杨建恒 胡爱军 |
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| 作者单位： | 1. 广西科技大学汽车与交通学院, 广西 柳州 545006;2. 西安航天动力机械厂, 陕西 西安 710025;3. 西安航天复合材料研究所, 陕西 西安 710025;4. 河南理工大学机械与动力工程学院, 河南 焦作 454000 |
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| 基金项目： | 广西教育厅2012年度高等学校科研项目(201204LX273)资助 |
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| 摘 要： | 采用计算流体力学方法,探讨路堤倾角变化对高速列车侧风运行气动特性影响.结果表明:随着路堤倾角增大,头车侧向力系数先增加后减小,而中间车侧向力系数则持续减小.尾车上的侧向力系数先是略微减小,当路堤倾角达到47.5°时,侧向力系数随倾角增加而增加.作用在中间车上的负升力随着路堤倾角增加而增加.尾车的升力系数对路堤倾角变化非常敏感,变化幅度较大.路堤倾角变化时高速列车绕流流场变化,从而导致列车受到的气动力发生变化.
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| 关 键 词： | 路堤 侧风 高速列车 气动特性 数值模拟 |
| 收稿时间： | 2012-11-05 |
| 修稿时间： | 2013-02-02 |
Effect of Embankment Inclining Angle on Aerodynamic Characteristics of High Speed Train Under Crosswinds |
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| LUO Jianbin,HU Yuanyuan,YANG Jianheng,HU Aijun.Effect of Embankment Inclining Angle on Aerodynamic Characteristics of High Speed Train Under Crosswinds[J].Chinese Journal of Computational Physics,2013,30(5):675-682. |
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| Authors: | LUO Jianbin HU Yuanyuan YANG Jianheng HU Aijun |
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| Institution: | 1. Automotive and Transportation Engineering Institute, Guangxi University of Science and Technology, Liuzhou 545006, China;2. Xi'an Aerospacemotor Machine Factory, Xi'an 710025, China;3. Xi'an Aerospace Composite Materials Research Institute, Xi'an 710025, China;4. School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China |
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| Abstract: | With computational fluid dynamics method, effect of embankment inclining angle on aerodynamic characteristics of high speed train under crosswinds is explored. It shows that as inclining angle of embankment is increased, side force coefficient on head train is increased a little and then decreased. Side force coefficient on middle train is gradually decreased. Side force coefficient on rear train is decreased a little and then increased as the angle reaches 47.5°. Negative lifting force coefficient on middle train is increased and lifting force coefficient on rear train is sensitive to inclining angle of embankment. The flow field around train is transformed as the inclining angle of embankment is changed and aerodynamic force or moment is changed consequently. |
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| Keywords: | embankment crosswind high speed train aerodynamic characteristic numerical simulation |
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