侧风中客车变道行驶的双向耦合仿真研究  

Research on Two-Way Coupled Simulation of Bus Changing Lanes in Crosswind

作　　者：孙凯 杨易[1] 谷正气[2] 郑乐典 张勇[3] 高骏 SUN Kai;YANG Yi;GU Zhengqi;ZHENG Ledian;ZHANG Yong;GAO Jun(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 41008,China;Hunan University of Arts and Science,Changde 415000,China;Department of Mechanical Engineering,Hunan University of Technology,Zhuzhou 412007,China)

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082 [2]湖南文理学院,湖南常德415000 [3]湖南工业大学机械工程系,湖南株洲412007

出　　处：《重庆理工大学学报（自然科学）》2020年第10期25-33,共9页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金项目(51875186,51975197);纯电动大客车低阻车身与轻量化结构开发关键技术研究项目(2017GK2203);湖南大学汽车车身先进设计与制造国家重点实验室自主课题资助项目(734215002);车用锂电池包热流场特性与仿生散热研究项目(18A270);计及气动升力的电动汽车双向耦合气动稳定性研究项目(2019JJ60063)。

摘　　要：为了准确地模拟客车变道时受到侧风的场景,建立了基于空气动力学软件Star-CCM+和多体动力学软件ADAMS/Car的双向耦合数据交换方法,其中通过重叠动网格技术实现客车在流体中的运动,利用SST(Menter)k-ωIDDES模型计算瞬态气动负载,分析了稳态侧风中不同侧风边界条件计算结果的准确性,并对比了单双向耦合方法在客车变道过程中响应产生的差异。结果表明:动边界方法和单向耦合应用在客车俯仰稳定性分析时误差较大。In order to accurately simulate the scene of bus being subjected to crosswinds when changing lanes,a two-way coupled data exchange method based on aerodynamic software Star-CCM+and multi-body dynamics software ADAMS/Car was established,using the overset mesh technology to realize the movement of the bus in the fluid,using the SST(Menter)k-ωIDDES model to calculate the transient aerodynamic load,and analyzing the accuracy of the calculation results of the different crosswind boundary conditions in the steady crosswind,and comparing the differences between the response of the one-way and two-way coupling method during the course change of the bus.The results showed that the dynamic boundary method and the one-way coupling application had large errors in the analysis of bus pitch stability.

关 键 词：双向耦合 变道 重叠网格 侧风稳定性 

分 类 号：U461[机械工程—车辆工程]