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交通运输工程学报
JOURNAL OF TRAFFIC AND TRANSPORTATION ENGINEERING
2006 Vol.6 No.3 P.18-22

数字化期刊

缓冲结构减缓高速铁路隧道出口微压波数值比较

耿烽  张倩  梅元贵 

摘 要:研究了高速铁路隧道出口微压波产生机理,结合一维可压缩非定常不等熵空气流动理论和无限大障板圆形活塞辐射理论,应用数值计算方法研究了不同形状缓冲结构条件下高速铁路隧道出口附近微压波规律.通过对缓冲结构形状以及各种参数计算结果进行定性与定量对比,发现对于截面积变化的线型、抛物线型和不连续型缓冲结构,随着长度和端口截面积增加,隧道出口附近微压波强度衰减较大,其中不连续型缓冲结构综合效果最佳;而截面积为常量,具有开孔的缓冲结构,虽然也可较大幅度降低隧道出口附近微压波强度,但是需要综合比较才能选取最佳结构参数.
关键词:铁道工程;缓冲结构;隧道微压波;数值计算
分类号:U453.8 文献标识码:A

文章编号:1671-1637(2006)03-0018-05

Numerical value comparison of micro-pressure wave in reduction by using hoods at high-speed railway tunnel exit

Geng Feng   Zhang Qian   Mei Yuan-gui 

基金项目:南京工程学院基金项目(KXJ04011)
作者简介:耿烽(1972- ),男,河南淇县人,南京工程学院讲师,从事车辆空气动力学研究.
作者单位:耿烽(南京工程学院,机械工程系,江苏,南京,210013) 
     张倩(南京工程学院,机械工程系,江苏,南京,210013) 
     梅元贵(兰州交通大学,热能与动力工程研究所,甘肃,兰州,730070) 

参考文献:

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收稿日期:2005年12月2日

出版日期:2006年9月30日