摘要
城轨列车隧道空气附加阻力是列车运行阻力的重要组成部分。现有常用计算公式只与隧道长度相关,无法体现列车长度、列车速度和隧道阻塞比等因素对阻力计算的影响。采用CFD(Computational Fluid Dynamics)的方法对城轨列车在隧道内运行过程中所受隧道空气附加阻力进行计算,针对可能的影响因素,本着控制变量的原则设置仿真实验组。最终确定了城轨列车隧道空气附加阻力计算影响因素及各因素影响程度,为城轨列车隧道空气附加阻力计算修正研究提供理论依据。
The additional air resistance due to tunnel of urban rail train is an important part of train running resistance.The existing common calculation formula is only related to the tunnel length,which cannot reflect the influence of train length,train speed and tunnel blocking ratio on resistance calculation.The computational fluid dynamics(CFD)was adopted to calculate the additional air resistance of urban railway trains in the process of running in the tunnel.For the possible influencing factors,the simulation experiment group was set up according to the principle of control variables.Finally,the influence factors and the influence degree of each factor are determined,which provides a theoretical basis for the calculation and correction of the additional air resistance due to tunnel for urban rail train.
作者
宫保贵
孙国斌
曹虎
孙丛君
葛学超
李家兴
Gong Baogui;Sun Guobin;Cao Hu;Sun Congjun;Ge Xuechao;Li Jiaxing(CRRC Corporation Limited,Beijing 100036,China;CRRC Qingdao Sifang Rolling Stock Research Institute Co.,Ltd.,Qingdao 266031,Shandong,China;School of Transportation Science and Engineering,Beihang University,Beijing 100191,China)
出处
《计算机应用与软件》
北大核心
2020年第11期69-72,145,共5页
Computer Applications and Software
基金
北京市科技计划课题(Z181100003918001)。
关键词
城轨列车
隧道空气附加阻力
CFD数值模拟
Urban rail transit
Additional air resistance due to tunnel
CFD numerical simulation
