摘要
新能源汽车的续航里程是制约其推广应用的瓶颈,影响续航里程的因素除了电池容量外,还有车辆行驶阻力等。文章采用计算流体力学(CFD),对某电动房车进行了改进设计。首先,使用kε湍流模型,获得模型外部流场,找出了产生气动阻力较大的区域;然后,设计一个气动附加装置导流罩,对模型进行改进,减小了整车的气动阻力和气动升力系数。研究发现:降低车身气动阻力,可以减少整车行驶阻力,有效提升新能源汽车的续航里程。
The bottleneck restricting the promotion of new energy vehicles is mileage.Besides the battery,the driving resistance has a great influence on the mileage.It is found that the reduction of aerodynamic resistance can reduce the whole vehicle running resistance.In this paper,computational fluid dynamics(CFD)is used to improve an electric Recreational vehicle(RV).The k-εturbulence model is used to obtain the external flow field of the model,and to find out the region with large aerodynamic resistance.The model is improved by designing the aerodynamic attachment device,the aerodynamic drag and lift coefficient reduced.This CFD method provides an effective tool for the design and development of new energy vehicles.
作者
沈夏威
SHEN Xia-wei(School of Mechatronics and Automobile Engineering, Huzhou Vocational and Technological College, Huzhou 313000, China)
出处
《湖州职业技术学院学报》
2019年第2期70-72,共3页
Journal of Huzhou Vocational and Technological College
关键词
新能源汽车
电动房车
计算流体力学
kε湍流模型
new energy vehicle
electric recreational vehicle
computational fluid dynamics
k-ε turbulence model
