摘要
基于整车参数建立车身和风洞的三维模型并进行网格划分,建立车身空气动力学的有限元模型.采用k-ε湍流模型,利用耦合式求解器对车身进行外流场的仿真分析,得出影响车身外流场的汽车结构性能参数.对影响车身气动性变化的结构因素进行仿真分析,并以此为依据对原始车身模型进行气动造型优化.对改进的车身进行仿真分析,结果显示气动阻力和气动升力都有所降低,验证改进方法的有效性,为汽车车身的优化研究提供新的参考方法.
Based on vehicle parameters,the three-dimensional models of body and wind tunnel were established and meshed,and the finite element model of body aerodynamics was established.The k-epsilon turbulence model was used to simulate and analyze the external flow field of the car body with a coupled solver,and the structural performance parameters affecting the external flow field of the car body were obtained.The structural factors affecting the aerodynamic change of the car body were simulated and analyzed,and the aerodynamic modeling of the original car body model was optimized based on the simulation results.The simulation analysis results of the improved vehicle body show that the aerodynamic resistance and lift force have been reduced to verify the effectiveness of the improved method,which provides a new reference method for the optimization research of automobile body.
作者
隋丽娜
SUI Lina(Civil Engineering Teaching Department,Shanghai Construction Engineering School,Shanghai 200241,China)
出处
《上海工程技术大学学报》
CAS
2019年第3期262-266,共5页
Journal of Shanghai University of Engineering Science
关键词
汽车车身
气动阻力
气动升力
优化
automotive body
aerodynamic resistance
aerodynamic lift
optimization
