铁道科学与工程学报2017，Vol.14Issue(12)：2525-2531,7.
线间距对交会压力波的影响研究
Influence of line spacing on the intersection pressure wave
摘要
Abstract
Based on three-dimensional, unsteady Reynolds-averaged N-S equations and standard two-equation turbulence models, the complex air flow field of high-speed train was simulated by sliding grid technology. The influence of the change of line spacing on the pressure wave of high-speed train intersection was studied. The results show that the amplitude of the pressure wave increases with the decrease of the line spacing. The amplitude of the intersection pressure wave increases by 8.3%when the line spacing changes from 4.6 m to 4.4 m, and the amplitude of the intersection pressure wave increases by 8.5%when the line spacing changes from 4.4 m to 4.2 m. The amplitude of the intersection pressure wave increases with the decrease of the line spacing, which has little effect on the pressure wave of the whole tunnel. When the line spacing changes from 4.6 m to 4.4 m, the amplitude of the intersection pressure wave crest increases by 5.7%. When the line spacing varies from 4.4 m to 4.2 m, the amplitude of the intersection wave increases by 5.8%. The pressure amplitude of the tunnel measuring point increases by about 2%. When two high-speed train passing by each other, the amplitude of the intersection wave near the intersection area is far greater than the area which is far away from the intersection area.关键词
高速铁路/线间距/交会压力波/数值模拟/动模型Key words
high-speed railway/line spacing/intersection pressure wave/numerical simulation/moving model分类
交通工程引用本文复制引用
魏洋波,梁习锋..线间距对交会压力波的影响研究[J].铁道科学与工程学报,2017,14(12):2525-2531,7.基金项目
高铁联合基金资助项目(U1334205) （U1334205）
中国铁路总公司科技研究开发计划重大资助项目(2015T002-A) （2015T002-A）
中国铁路总公司科技研究开发计划项目(2016T004-C,Z2015-T003) （2016T004-C,Z2015-T003）
