挟沙强横风环境下高速列车的冲蚀性能研究
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U270.1

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Study on erosion performance of high speed train under
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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    为了研究风沙环境下高速列车的冲蚀效应,基于空气动力学理论,使用Navier-Stokes方程、标准κ-ε湍流模型对气流进行连续化假设,应用DPM模型对沙粒粒子进行离散化处理。数值模拟了不同风速、不同沙粒粒子直径、不同浓度下的高速列车冲蚀效应,采用欧拉-拉格朗日方法进行求解计算。研究结果表明:速度越大,反射后的粒子距离列车表面越远,偏航角越大,列车附近的粒子运动越无规则;当速度不变时,列车车头处的冲蚀率随着粒子直径的增大而增大;当粒子直径不变时,冲蚀率随着粒子浓度的增大而增大,随着速度的增大呈现先减小后增大的趋势,且最大冲蚀率是最小冲蚀率的2.8倍。

    Abstract:

    In order to study the erosion effect of high-speed train in the wind and sand environment, based on the aerodynamics theory, the Navier Stokes equation and the standard κ - ε turbulence model are used to continuous the air flow, and the DPM model is used to discrete the sand particles. The erosion effect of high-speed train under different wind speed and sand particle diameter and concentration is simulated. The Euler Lagrange method is used to solve the problem. The results show that the farther the reflected particles are from the train surface with increase of velocity and the more irregular the movement of particles near the train is with the increase of yaw angle; when the velocity is constant, the erosion rate of the train head increases with the increase of diameter; when the diameter of particles is constant, the erosion rate increases with increase of concentration, but with increase of velocity, the erosion rate decreases first and then increases, the maximum erosion rate is 2.8 times of the minimum erosion rate.

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金阿芳,谢繁荣,热依汗古丽·木沙. 挟沙强横风环境下高速列车的冲蚀性能研究[J]. 科学技术与工程, 2022, 22(12): 5020-5026.
Jin Afang, Xie Fanrong, Reyihanguli·Musha. Study on erosion performance of high speed train under[J]. Science Technology and Engineering,2022,22(12):5020-5026.

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  • 收稿日期:2021-06-24
  • 最后修改日期:2022-01-10
  • 录用日期:2021-11-22
  • 在线发布日期: 2022-05-07
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