铁道科学与工程学报2017，Vol.14Issue(1)：1-6,6.
高速列车经过跨线天桥脉动风压分析
Fluctuating wind pressure analysis of the bridge while High-speed train passing by
摘要
Abstract
High-speed train passing through the bridge structure causes a great local pressure in the small space between the bridge and the high-speed train, while the bridge structure across the line is extremely sensitive to the fluctuating wind pressure . In order to study the size of the fluctuating wind pressure, we simulate the three-dimensional, unsteady, compressible flow field while high-speed train passing through the bridge across the line using numerical simulation CFD, sliding mesh technique, large eddy simulation turbulence model ( LES) and the results squares with the measured data. Via analyzing the LES simulation results in the time domain, we ex-plore the position of the fluctuating part, pulsating extreme spatial distribution, as well as the proportion of fluc-tuating wind energy in total pressure energy. While in the frequency domain we decompose LES results using wavelet packet analysis, analyzing the energy distribution of the band pressure. The results showed that:the fluc-tuating wind pressure across the bridge is very small.关键词
大涡模拟/滑移网格/小波包分析/脉动风Key words
LES/sliding mesh technique/wavelet packet analysis/fluctuating wind pressure分类
交通工程引用本文复制引用
杨娜,张帅..高速列车经过跨线天桥脉动风压分析[J].铁道科学与工程学报,2017,14(1):1-6,6.基金项目
中央高校基本科研业务费专项资金资助项目(2012JBM007) （2012JBM007）
新世纪优秀人才支持计划资助项目(NCET-11-0571) （NCET-11-0571）
国家自然科学基金优秀青年基金资助项目(51422801) （51422801）
