摘要
为分析换气风机对高速空调列车车外压力波的抑制作用,采用数值计算的方法,仿真分析了两种换气风机(定速风机与变频风机)在不同运行工况下对外界气体压力波动的抑制,得到了不同车速下车内压力变化情况,利用我国最近制订的《高速电动车组整车试验规范(报批稿)》对车内压力做了评价。计算结果表明:在各种压力波动工况下,变频风机抑制外界压力波动的效果均优于定速风机。
In order to find the influence of ventilating fan on resisting the external pressure-pulse of high-speed train, the pressure change in carriages installed two kinds of ventilating fans （speed-fixed fans and frequency-convertible fans） was analyzed by numerical simulation method, and the pressure-pulse in carriage at different running speeds of train was obtained. Based on the calculation results, the passenger comfortableness was evaluated according to testing standard of high-speed electric trains （tentative version）. The results show that frequency-convertible fan is better than speed-fixed fan for resisting pressure-pulse produced by external pressure change.
出处
《机械工程与自动化》
2013年第4期1-3,共3页
Mechanical Engineering & Automation
基金
"十一五"国家科技支撑计划项目(2009BAG12A04-A10)
关键词
高速列车
空调系统
数值模拟
压力变化
换气风机
high-speed train
air-conditioning system
numerical simulation
pressure change
ventilating fan
