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Aerodynamic simulation of evacuated tube maglev trains with different streamlined designs

ISSN号：1005-023X
期刊名称：《材料导报》
时间：0
分类：U292.917[交通运输工程—交通运输规划与管理;交通运输工程—道路与铁道工程] U461.1[机械工程—车辆工程;交通运输工程—载运工具运用工程;交通运输工程—道路与铁道工程]
作者机构：[1]Key Laboratory of Magnetic Levitation Technologies and Maglev Trains （Ministry of Education of China）, Superconductivity and New Energy R＆D Center, Southwest Jiaotong University, Chengdu 610031, China
相关基金：Acknowledgments This work was supported by the Program for Changjiang Scholars and Innovative Research Team in University （PCSIRT） of the Ministry of Education of China （IRT0751）, the National High Technology Research and Development Program of China （863 program： 2007- AA03Z203）, the National Natural Science Foundation of China （Grant Nos. 50588201and 50872116）, the Research Fund for the Doctoral Program of Higher Education of China （SRFDP200806130023）, and the Fundamental Research Funds for the Central Universities （SWJTU- 09BR152, SWJTU09ZT24, and SWJTU11 CX073）.

作者： Xuyong CHEN Lifeng ZHAO Jiaqing MA, Yuansen LIU[1]

关键词：磁悬浮列车, 空气阻力, 真空管, 动力学模拟, 流线型设计, NAVIER-STOKES, 不可压缩粘性流体, ANSYS, aerodynamic drag, evacuated tube maglev train, blockage ratio, train head and tail

中文摘要：

基于海军司烧( N-S )方程不可压缩粘滞液体和标准k-骚乱与稳定的状态和二个维的条件的假设当模特儿，模拟空气动力学在一个撤离试管在一列磁悬浮火车火车上拖在不同真空压力下面用 ANSYS/FLOTRAN 软件被做，阻塞比率，并且火车的形状出发并且跟踪。在不同真空压力下面的撤离试管磁悬浮火车火车的压力流动地在一样的阻塞比率条件下面被分析，然后比较。结果证明在试管的 1 000 Pa 的环境压力是最好完成效果空气动力学拖减小，并且在没有明显的差别空气动力学拖减小在之中不同优化头形状。总的来说，钝形状的尾巴和 0.25 的阻塞比率是更有效的为在 1 000 Pa 的试管压力拖火车的减小。

英文摘要：

Based on the Navier-Stokes （N-S） equations of incompressible viscous fluids and the standard k-ε turbu- lence model with assumptions of steady state and two dimensional conditions, a simulation of the aerodynamic drag on a maglev train in an evacuated tube was made with ANSYS/FLOTRAN software under different vacuum pressures, blockage ratios, and shapes of train head and tail. The pressure flow fields of the evacuated tube maglev train under different vacuum pressures were analyzed, and then compared under the same blockage ratio condition. The results show that the environmental pressure of 1 000 Pa in the tube is the best to achieve the effect of aerodynamic drag reduction, and there are no obvious differences in the aerodynamic drag reduction among different streamline head shapes. Overall, the blunt-shape tail and the blockage ratio of 0.25 are more efficient for drag reduction of the train at the tube pressure of 1 000 Pa.

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