汽车尾翼对汽车稳定性的影响  

The Influence of Car Spoiler on Stability of Automobile^(3)

作　　者：王得蛟 WANG Dejiao(Gansu Construction and Investment Heavy Industry Technology Co.,Ltd.,Lanzhou 730000,China;Gansu Special Purpose Motor Vehicle Engineering Research Center,Lanzhou 730000,China)

机构地区：[1]甘肃建投重工科技有限公司,甘肃兰州730000 [2]甘肃省专用汽车工程研究中心,甘肃兰州730000

出　　处：《兰州工业学院学报》2024年第2期53-56,共4页Journal of Lanzhou Institute of Technology

摘　　要：为了研究汽车尾翼对气动性能的影响,借鉴某经典车型,建立了该三厢车的汽车模型,为其设计了3种不同的尾翼,并对3种不同翼型的汽车进行三维空气动力学数值计算。采用雷诺时均方程和RNG k-ε湍流模型进行模拟计算,并用SIMPLEC算法进行压力和速度耦合。最后利用经典计算理论进行对比分析,得出不同尾翼对汽车性能的影响以及产生其影响的原因,尾缘下翼面增厚能够提供较大的升力系数使轿车产生更大的行驶稳定性,尾缘上翼面增厚对升力系数影响尤为明显,尖尾缘翼型具有较大的升阻比,可以达到稳定性和燃油经济性兼顾的目的。In order to study the influence of car spoiler on aerodynamic performance,a classic model is referenced,a car model of the three-compartment car is established,three different car spoilers are designed,and three-dimensional aerodynamic numerical calculation is carried out for three cars with different car spoilers.The Reynolds time mean equation and RNG K-turbulence model are used to simulate the calculation,and the pressure and velocity are coupled with SIMPLEC algorithm.Finally,the classical calculation theory is used for comparative analysis,and the influence of different car spoilers on vehicle performance and the reasons for its influence are obtained.Thickening spoiler at lower surface can provide larger lift coefficient to produce greater driving stability of the car.Lift coefficient change is obvious when Thickening spoiler at upper surface,sharp trailing edge of spoiler has higher lift-to-drag ratio,which can achieve the purpose of both stability and fuel economy.

关 键 词：汽车尾翼 空气动力学 升阻比 

分 类 号：U461[机械工程—车辆工程]