轿车鲨鱼鳍位置研究及流场分析  

Study on Shark Fin Position and Flow Field Analysis in Car

作　　者：杜骏 高志彬 李冬琦 潘钰洋 叶飞晓 DU Jun;GAO Zhibin;LI Dongqi;PAN Yuyang;YE Feixiao(School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao 266500,China)

机构地区：[1]青岛理工大学机械与汽车工程学院,山东青岛266500

出　　处：《汽车实用技术》2024年第23期79-83,共5页Automobile Applied Technology

摘　　要：汽车鲨鱼鳍是车辆中不可或缺的部件,其安装位置会影响车辆流场和阻力。针对某轿车车型,通过数值仿真技术探讨鲨鱼鳍对车身周围流场、整车气动阻力和升力的影响,使用SolidWorks建立原模型,采用计算流体动力学(CFD)的方法模拟车辆外部流场并计算阻力和升力。在原模型的基础上,添加鲨鱼鳍,并进行流场模拟和计算。研究结果表明,在合适的位置安装鲨鱼鳍能减小整车气动阻力和升力,并有效缩小汽车尾部涡流区域。因此,建议在不影响后窗视线的情况下,最大限度保证投影面积少量增加或不变,以至于提升整车性能。Automotive shark fins are an indispensable part of the vehicle,and their installation location will affect the vehicle flow field and resistance.For a car model,the effects of shark fins on the flow field around the car body,aerodynamic resistance and lift of the vehicle are discussed by numerical simulation technology.The original model is established by using SolidWorks,and the external flow field of the vehicle is simulated by computational fluid dynamics(CFD)and the drag and lift are calculated.On the basis of the original model,the shark fin is added,and the flow field is simulated and calculated.The research results show that the installation of shark fins at appropriate positions can reduce the aerodynamic drag and lift of the vehicle,and effectively narrow the tail vortex area of the vehicle.Therefore,it is recommended to ensure that the projected area is increased or unchanged to the maximum extent without affecting the line of sight of the rear window,so as to improve the vehicle performance.

关 键 词：轿车 鲨鱼鳍 气动阻力 升力 数值仿真 

分 类 号：U461.1[机械工程—车辆工程]