中南大学学报（自然科学版）2026，Vol.57Issue(6)：2481-2494,14.DOI:10.11817/j.issn.1672-7207.2026.06.008
侧风作用下动力集中型动车组运行模式对气动特性与运行安全性的影响
Effects of operating modes on aerodynamic characteristics and operational safety of powered centralized trains in crosswinds
摘要
Abstract
In order to examine different operating modes that affected the aerodynamic behavior and operational safety of powered centralized trains under crosswind conditions,numerical simulations were performed to evaluate aerodynamic loads,surface pressure,and flow structures for trains running on windward and leeward tracks atop a 10 m-high embankment.The simulations were based on unsteady Reynolds-averaged Navier-Stokes equations with the realizable k-ε turbulence model.Train stability under crosswinds was assessed using critical wind speeds derived from the three mass model.The analysis compares three operating modes,i.e.,rear-push,front-pull and multiple unit configurations,and the track position influences aerodynamic response and safety were evaluated.Based on these results,practical operating strategies were proposed for railway sections exposed to strong winds.The results show that the leading vehicle on the leeward track experiences larger rolling moments than that on the windward track,resulting in reduced safety.Critical wind speeds decrease by 16.5%and 15.2%for two short-formation modes(rear-push and front-pull-configurations),while the reduction is only 3.5%for the multiple-unit mode.Among the operating modes,the rear-push configuration exhibits the lowest safety margin,whereas the multiple-unit configuration performs best.For short train formations,operating with a rear-push mode on the windward track and a front-pull mode on the leeward track improves safety by approximately 16.5%relative to the opposite arrangement.Where feasible,adopting a coupled multiple-unit operation can furtherly enhance safety by about 24.2%.关键词
侧风/动力集中型动车组/气动载荷系数/临界风速曲线/列车运行安全性/数值模拟Key words
crosswinds/powered centralized trains/aerodynamic load coefficients/critical wind curve/train operation safety/numerical simulations分类
交通工程引用本文复制引用
高鸿瑞,刘堂红,汪陈杏子,刘斌,张洁,梁习锋..侧风作用下动力集中型动车组运行模式对气动特性与运行安全性的影响[J].中南大学学报（自然科学版）,2026,57(6):2481-2494,14.基金项目
国家自然科学基金资助项目(U24B20123) （U24B20123）
国家自然科学基金委员会基础科学中心项目(52388102) （52388102）
湖南省科技创新计划项目(2022RC3040) （2022RC3040）
中国铁路乌鲁木齐局集团有限公司科技研究开发计划项目(2026-kj-35) （2026-kj-35）
中南大学高性能计算中心资助课题(2026)(Project(U24B20123)supported by the National Natural Science Foundation of China （2026）
Project(52388102)supported by the National Natural Science Foundation of China-Fundamental Science Center （52388102）
Project(2022RC3040)supported by the Science and Technology Innovation Program of Hunan Province （2022RC3040）
Project(2026-kj-35)supported by the Technology Research and Development Program of China Railway Urumqi Group Co.Ltd. （2026-kj-35）
Project(2026)supported by the High Performance Computing Center of Central South University) （2026）
