Optimization of automotive aerodynamic performance based on DOE

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-18 DOI:10.1177/09544070241248902

Yi Chen, Xiaoming Ye, Xiaobi Wang, Menghua Duan, Pei Deng, Ling Qing

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Abstract

Based on a new-energy sedan as the research object, the Design of Experiments (DOE) optimization integrated grid deformation method was used to optimize and improve the aerodynamic performance of a certain development model. A three-dimensional flow field comparison analysis was conducted on the improved areas of the whole vehicle flow field, and wind tunnel tests were conducted for verification. Through CFD simulation and wind tunnel test verification, the accuracy of the CFD simulation method was verified. The engineering feasible DOE optimization recommended area for the whole vehicle was summarized. The optimal prediction results based on the DOE optimization method and the corresponding CFD simulation results were analyzed for reliability. The correlation between the optimization variables and the target function was analyzed, and 6 counts reduced the whole vehicle drag coefficient by adjusting the optimization variables within a small range. Finally, wind tunnel tests were used to verify the effectiveness of the optimized variable scheme. The results provide an important reference for the optimization design and development of vehicle aerodynamic performance.

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基于 DOE 的汽车空气动力学性能优化

以某新能源轿车为研究对象，采用试验设计（DOE）优化集成网格变形法对某开发模型的空气动力学性能进行了优化改进。对整车流场改进区域进行了三维流场对比分析，并进行了风洞试验验证。通过 CFD 模拟和风洞试验验证，验证了 CFD 模拟方法的准确性。总结了工程可行的整车 DOE 优化推荐区域。分析了基于 DOE 优化方法的最优预测结果和相应的 CFD 仿真结果的可靠性。分析了优化变量与目标函数之间的相关性，通过在小范围内调整优化变量降低整车阻力系数 6 次。最后，通过风洞试验验证了优化变量方案的有效性。研究结果为车辆空气动力性能的优化设计和开发提供了重要参考。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.