真空管道交通列车气动阻力数值分析

doi:10.3901/JME.2019.08.165

机械工程学报 ›› 2019, Vol. 55 ›› Issue (8): 165-172.doi: 10.3901/JME.2019.08.165

真空管道交通列车气动阻力数值分析

黄尊地^1,2, 梁习锋¹, 常宁²

1. 中南大学交通运输工程学院轨道交通安全教育部重点实验室长沙 410075;
2. 五邑大学轨道交通学院江门 529020

收稿日期:2018-07-04 修回日期:2018-12-12 出版日期:2019-04-20 发布日期:2019-04-20
通讯作者: 常宁(通信作者),女,1984年出生,讲师。主要研究方向为轨道交通车辆。E-mail:wydxcn@163.com
作者简介:黄尊地,男,1987年出生,博士研究生,讲师。主要研究方向为真空空气动力学。E-mail:wyuhzd@163.com;梁习锋,男,1963年出生,教授,博士研究生导师。主要研究方向为列车空气动力学。E-mail:gszxlxf@163.com
基金资助:
高铁联合基金重点（U1334205）和广东省教育厅青年创新人才类（2016KQNCX172）资助项目。

Numerical Analysis of Train Aerodynamic Drag of Vacuum Tube Traffic

HUANG Zundi^1,2, LIANG Xifeng¹, CHANG Ning²

1. Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075;
2. School of Rail Transportation, Wuyi University, Jiangmen 529020

Received:2018-07-04 Revised:2018-12-12 Online:2019-04-20 Published:2019-04-20

摘要/Abstract

摘要： 高速铁路进一步提速会面临巨大能耗、气动噪声和横风失稳等问题，构建真空环境形成管道运输可以很好地解决以上运营问题。依据最小空间尺寸计算克努森数判断真空管道内流体流动状态，考虑三维非定常可压缩效应建立列车和真空管道耦合的真空空气动力学计算模型，分析列车运行速度、真空管道真空度、阻塞比和环境温度对列车气动阻力的影响。研究表明，列车运行气动阻力与运行速度成抛物线递增关系，与管道压力成线性递增关系，与阻塞比成线性递增关系，与环境温度成线性递增关系；列车运行速度越高，真空管道真空度越低，阻塞比越高，环境温度越高，列车运行气动阻力越大。研究成果为克努森数特征长度的取值、真空管道内流体流动状态的判断、真空空气动力学数值计算的开展和真空管道交通列车气动阻力的分析提供理论依据。

关键词: 环境温度, 气动阻力, 运行速度, 真空度, 真空管道交通, 阻塞比

Abstract: When high-speed railway further speeds up, it will face huge energy consumption, aerodynamic noise and horizontal wind instability problems. Vacuum tube traffic can well solve the above operation problems. Based on the minimum space size, Knudsen number can be calculated. Based on Knudsen number, fluid flow state can be determined in the vacuum pipe. Based on the three-dimensional, unsteady and compression effect, vacuum aerodynamic calculation model is established, include train, station and pipeline, to analysis the relationship among train running speed, vacuum degree, blockage ratio, environment temperature and train aerodynamic drag. Studies show that train aerodynamic drag is parabolic incremental relationship with speed, linear incremental relationship with vacuum degree, linear incremental relationship with blockage ratio and linear incremental relationship with environmental temperature. The higher the train speed, the lower the vacuum degree, the higher the blockage ratio, the higher the environmental temperature, the higher the train aerodynamic drag. The research results provide theoretical basis for the value of Knudsen number feature length, the judgment of fluid flow state in vacuum pipeline, the numerical calculation of vacuum aerodynamics and the analysis of aerodynamic drag of vacuum pipeline traffic train.

Key words: aerodynamic drag, blockage ratio, environmental temperature, speed, vacuum degree, vacuum tube traffic

中图分类号:

U171

黄尊地, 梁习锋, 常宁. 真空管道交通列车气动阻力数值分析[J]. 机械工程学报, 2019, 55(8): 165-172.

HUANG Zundi, LIANG Xifeng, CHANG Ning. Numerical Analysis of Train Aerodynamic Drag of Vacuum Tube Traffic[J]. Journal of Mechanical Engineering, 2019, 55(8): 165-172.

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真空管道交通列车气动阻力数值分析

Numerical Analysis of Train Aerodynamic Drag of Vacuum Tube Traffic

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