不同空气湿度对列车交会压力波的影响  

Influence of Different Air Humidity on Pressure Waves on Train Passing Each Other

作　　者：王前选 徐祥南 郭展豪 黄琬 WANG Qian-xuan;XU Xiang-nan;GUO Zhan-hao;HUANG Wan(School of Railway Tracks and Transportation,Wuyi University,Jiangmen 529020,China;School of Transportation Engineering,Central South University,Changsha 410075,China)

机构地区：[1]五邑大学轨道交通学院,广东江门529020 [2]中南大学交通运输工程学院,湖南长沙410075

出　　处：《五邑大学学报（自然科学版）》2020年第3期28-33,74,共7页Journal of Wuyi University(Natural Science Edition)

基　　金：2019年广东省普通高校特色创新类项目(2019KTSCX182)。

摘　　要：为研究空气湿度对列车交会压力波的影响,以CRH2高速列车为研究对象,通过采用滑移网格技术,在Fluent里改变空气的特性以模拟不同的空气湿度,求解三维、瞬态、黏性、不可压缩的基本控制方程和标准k-e双方程湍流模型,由此模拟了不同空气湿度和速度下的列车交会情况.研究结果表明:空气湿度与列车交会压力波呈线性关系,但总体上,空气湿度对列车交会压力波没有太大影响.空气湿度从0增加到100%,列车交会压力波的变化幅值不超过3%.本文结果可为低纬度地区高速铁路建设与运营提供理论支撑.In order to study the influence of air humidity on the pressure waves on trains passing each other,high-speed CRH2 trains were used as the research object.By using the sliding grid technology,the characteristics of the air were changed in Fluent to simulate different air humidity to solve the three-dimensional,transient,viscous,incompressible basic control equations and standard k-eequation turbulence models.Based on this,trains passing each other under different air humidity and speed were simulated.The results of the study show that the air humidity was linearly related to the air pressure pulse resulting from trains passing each other,but in genera l,the air humidity did not have much effect.The air humidity increased from 0 to 100%,and the change amplitude of the air pressure pulse on trains passing each did not exceed 3%.The research results can provide theoretical support for the construction and operation of high-speed railways in low-latitude regions.

关 键 词：高速铁路 高速列车 交会压力波 空气湿度 

分 类 号：U266.2[机械工程—车辆工程]