【作者】 张英朝； 王宇琪； 李涛； 李壮； 李现今； 王佳；

【Author】 Zhang Yingchao;Wang Yuqi;Li Tao;Li Zhuang;Li Xianjin;Wang Jia;State Key Laboratory of Automotive Simulation and Control,Jilin University;Beijing New Energy Co.,Ltd.;

【机构】 吉林大学汽车仿真与控制国家重点实验室； 北京新能源汽车股份有限公司；

【摘要】 针对北汽新能源汽车的EX3车型进行气动减阻开发设计,通过对其小比例模型进行仿真分析及风洞试验验证,展示了SUV气动开发过程。参考以往气动减阻设计方案,针对拟优化方案在油泥模型上进行相应改型面的修改,通过局部迭代优化得到了各个组合方案的减阻结果。对比EX3比例模型仿真与试验结果,验证了仿真的准确性。将几个试验工况与模型的仿真结果进行对比分析,最终实现了气动减阻的目的。更多还原

【Abstract】 The aerodynamic drag reduction development design is carried out for the EX3 model of BASIC BJEV.Through the simulation analysis and wind tunnel test of the EX3 small scale model,the process of aerodynamic development of SUV with BAIC BJEV EX3 as an example is demonstrated.Referring to the previous aerodynamic drag reduction design schemes,the corresponding modification surface was modified on the sludge model for the proposed optimization scheme,and the drag reduction results of each combination scheme were obtained.The simulation and experimental results of the EX3 scale model are compared to verify the accuracy of the simulation.The comparison between several test conditions and the simulation results of the model is carried out,and the purpose of pneumatic drag reduction is finally realized.更多还原