汽车队列行驶气动特性数值模拟  

Numerical simulation on the aerodynamic characteristic of vehicle platoon

作　　者：罗建斌[1] 吴量 苗明达 黄煜 LUO Jianbin;WU Liang;MIAO Mingda;HUANG Yu(Guangxi Key Laboratory of Automobile Components and Vehicle Technology (Guangxi University of Science and Technology) Liuzhou545006, China)

机构地区：[1]广西车辆零部件与整车技术重点实验室(广西科技大学),广西柳州545006

出　　处：《广西科技大学学报》2018年第1期8-13,共6页Journal of Guangxi University of Science and Technology

基　　金：广西教育厅2014年度高等学校科研项目(YB2014204);广西重点实验室建设项目子课题(14-A-01-03);广西工学院博士基金项目(校科博13Z10)资助

摘　　要：随着高速公路和智能交通系统的快速发展,开展汽车队列行驶的气动特性研究具有重要意义.本文对等间距的3车队列行驶的气动特性进行了数值模拟,并研究了车间距对其气动特性的影响.模拟结果表明:相比单车行驶情形,3车队列行驶的各车均有一定的减阻效果,其中尤以中间车和尾部车的更显著.简化的二维数值分析虽然忽略了车底部以及顶部的气流流动,但仍可为后续的真实车体绕流流动分析提供借鉴和参考.With the rapid development of the freeway and intelligent traffic system,the study on the aerodynamic characteristic of vehicle platoon is of great significance.With three vehicle platoon under the equal separation distance,the numerical simulation of vehicle aerodynamic performance has been carried out.The influence of spacing on its aerodynamic characteristic has also been studied.The simulation result shows that there is more drag reduction effect than a single vehicle when running in three vehicle platoon.It is more remarkable for the middle and rear car particularly.The simplified two-dimension numerical analysis has neglected the air flow on the bottom and the top of vehicle,but it can still provide references for the flowing of realistic vehicle.

关 键 词：汽车队列 气动特性 数值模拟 气动干扰 

分 类 号：U270.1[机械工程—车辆工程] U271.91[交通运输工程—载运工具运用工程]