| 高速列车单车通过隧道压力波的研究 |
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| 引用本文： | 刘小燕,陈春俊,王亚南.高速列车单车通过隧道压力波的研究[J].机械,2014(12):1-4,58. |
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| 作者姓名： | 刘小燕 陈春俊 王亚南 |
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| 作者单位： | 西南交通大学机械工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(51475387);国家自然科学基金资助项目(51375403) |
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| 摘 要： | 采用计算流体力学的数值计算方法对基于三维、瞬态、可压缩Navier-Stokes方程和κ-ε两方程紊流模型进行求解,模拟高速列车单车通过隧道时列车外流场的特性,分析高速列车单车通过隧道的压力波特性及阻力变化规律。结果表明列车单车通过隧道的压力波最小负压值与速度为二次函数的关系,列车阻力主要由压差阻力构成。研究结果可为解决隧道空气动力学问题提供参考依据。
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| 关 键 词： | 隧道压力波 空气动力学 计算流体力学 高速列车 |
Study on pressure wave of a high-speed train passing through a tunnel |
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| LIU Xiao-yan;CHEN Chun-jun;WANG Ya-nan.Study on pressure wave of a high-speed train passing through a tunnel[J].Machinery,2014(12):1-4,58. |
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| Authors: | LIU Xiao-yan;CHEN Chun-jun;WANG Ya-nan |
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| Affiliation: | LIU Xiao-yan;CHEN Chun-jun;WANG Ya-nan;School of Mechanical Engineering,Southwest Jiaotong University; |
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| Abstract: | Solve equations based on 3d,unsteady,compressible Navier-Stokes equations and two equation turbulence model by numerical calculation method of computational fluid mechanics.Simulate the external flow field characteristics of a high-speed train passing through a tunnel.Analysis the characteristic of pressure wave and the change law of drag force.The results show that when a train passing through a tunnel,the minimum pressure value of high-speed train along the speed is quadratic,drag force is mainly made up of pressure.The results can provide reference for solve problems of tunnel aerodynamics. |
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| Keywords: | tunnel pressure waves aerodynamics computational fluid dynamics high-speed train |
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