重庆理工大学学报2024，Vol.38Issue(7)：1-7,7.DOI:10.3969/j.issn.1674-8425(z).2024.04.001
改变车身造型的气动阻力与分轴升力多目标优化
Multi-objective optimization by changing aerodynamic resistance and split shaft lift of the body shape
摘要
Abstract
As the split-axis lift and drag still need further improvement, this paper proposes a styling optimization scheme.By taking an SUV as the research object, we build an SUV flow field simulation model.Then, the aerodynamic characteristics of the external flow field are analyzed, the parts of the body that need to be optimized are determined, and the accuracy of the results of the flow field simulation is verified through wind tunnel tests.We adopt the uniform Latin hypercube to sample the shape, conduct numerical simulation calculations of the external flow field, and establish the correspondence between the shape parameters and the aerodynamic coefficients through the kriging method.Our Pareto frontier solution is generated by the genetic algorithm.Finally, three optimization schemes are proposed to improve the drag coefficient and the front and rear axle lift coefficients comprehensively.The front axle lift coefficient reaches the lowest value and the drag coefficient is reduced by 2.7％.关键词
多目标优化/遗传算法/气动阻力/气动升力Key words
experiment design/multi-objective optimization/genetic algorithm/aerodynamic resistance/aerodynamic lift分类
交通工程引用本文复制引用
王刚,侯小帅,查银龙,姜元捷..改变车身造型的气动阻力与分轴升力多目标优化[J].重庆理工大学学报,2024,38(7):1-7,7.基金项目
国家自然科学基金项目(12072099) （12072099）
河北省自然科学基金项目(A2021202023) （A2021202023）
