| 基于Kriging模型的某轿车前轮阻风板优化 |
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| 引用本文： | 郭建成,谷正气,容江磊,张清林.基于Kriging模型的某轿车前轮阻风板优化[J].郑州大学学报(工学版),2011(3). |
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| 作者姓名： | 郭建成 谷正气 容江磊 张清林 |
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| 作者单位： | 湖南大学汽车车身先进设计制造国家重点实验室;湖南工业大学校党委; |
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| 基金项目： | 国家自然科学基金项目(50975083); 教育部长江学者与创新团队发展计划项目(531105050037); 湖南大学汽车车身先进设计制造国家重点实验室自主课题项目(61075001); 湖南省科技攻关计划重点项目(2009JT1014) |
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| 摘 要： | 将数值优化方法和CFD仿真结合,对某轿车前轮阻风板进行了优化.以前轮阻风板的高度和安装位置为变量,通过DOE拉丁试验方法选取了20组样本点.利用CFD仿真得到各样本点的响应值,由响应值建立Kriging近似模型.在验证了近似模型的可信度基础上,通过多岛遗传算法对近似模型进行全局寻优.优化结果表明:在不增大升力的前提下,前轮阻风板最多可将气动阻力由827.4 N降到792.4N,降幅为4.23%.若阻力、升力的权重分别设为0.85和0.15,气动阻力降为796.8 N,降幅为3.70%;气动升力降为382.6 N,降幅为6.55%.
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| 关 键 词： | 前轮阻风板 CFD仿真 试验设计 Kriging模型 多岛遗传算法 |
Optimization of Air Dam Skirts of the Front-Wheels of a Car Based on Kriging Model |
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| GUO Jian-cheng,GU Zheng-qi,RONG Jiang-lei,ZHANG Qing-lin.Optimization of Air Dam Skirts of the Front-Wheels of a Car Based on Kriging Model[J].Journal of Zhengzhou University: Eng Sci,2011(3). |
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| Authors: | GUO Jian-cheng GU Zheng-qi RONG Jiang-lei ZHANG Qing-lin |
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| Affiliation: | GUO Jian-cheng1,GU Zheng-qi1,2,RONG Jiang-lei1,ZHANG Qing-lin1(1.State Key Laboratory of Advanced Design and Manufacture for Vehicle Body,Hunan University,Changsha 410082,China,2.Party Committee Hunan University of technology,Zhuzhou 412008,China) |
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| Abstract: | The air dam skirts of the front-wheels of a certain car were optimized by combining data optimization method and CFD simulation.The height and the installation coordinate of the air dam skirts were chosen as the variables and 20 groups of sample data were adopted by the method of DOE.The response values corresponding to the sample were achieved by CFD simulation,and then Kriging model was established.The credibility of the model was verified and global optimization was carried out by multi-island genetic al... |
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| Keywords: | air dam skirts of front-wheel CFD simulation design of experiment Kriging model multi-island genetic algorithm |
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