| 车轮辐板形状对汽车气动阻力影响分析 |
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| 引用本文： | 谷正气,林肖辉,李伟平,汪怡平,袁志群.车轮辐板形状对汽车气动阻力影响分析[J].科技导报(北京),2011,29(6). |
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| 作者姓名： | 谷正气 林肖辉 李伟平 汪怡平 袁志群 |
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| 作者单位： | 谷正气,GU Zhengqi(湖南大学汽车车身先进设计制造国家重点实验室,长沙410082;湖南工业大学机械工程学院,湖南株洲412007);林肖辉,李伟平,汪怡平,LIN Xiaohui,LI Weiping,WANG Yiping(湖南大学汽车车身先进设计制造国家重点实验室,长沙,410082);袁志群,YUAN Zhiqun(厦门理工学院机械工程系,福建厦门,361024) |
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| 基金项目： | 国家自然科学基金项目，教育部长江学者和创新团队发展计划项目，湖南省科技攻关计划重点项目，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 |
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| 摘 要： | 汽车旋转的车轮所产生的复杂分离流对整车外部流场有重要影响.是整车气动阻力主要来源之一.应用计算流体力学对包含轮胎的整车进行仿真分析,并通过风洞试验验证了方法的可靠性.重点讨论了车轮边界条件的设置对计算结果的影响,并对同一型号的车轮,通过改变辐板的开孔个数和开孔面积分析对整车气动阻力系数的影响.结果表明,对车轮的模拟,采用旋转壁面模型比采用多参考坐标系(MRF)更为合理;当辐板开孔数不变时,随着开孔面积的增大,前、后车轮阻力系数都随之增大,整车阻力系数先增大后减小;当单个孔面积不变时,随着开孔数目的增多,后轮阻力系数随之增大,前轮、整车阻力系数先增大后减小.结果为汽车车轮的设计提供一定参考.
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| 关 键 词： | 空气动力学 汽车 旋转车轮 计算流体力学 |
Effect of the Shape of Wheel Spokes on Vehicle Aerodynamic Performance |
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| GU Zhengqi,LIN Xiaohui,LI Weiping,WANG Yiping,YUAN Zhiqun.Effect of the Shape of Wheel Spokes on Vehicle Aerodynamic Performance[J].Science & Technology Review,2011,29(6). |
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| Authors: | GU Zhengqi LIN Xiaohui LI Weiping WANG Yiping YUAN Zhiqun |
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| Institution: | GU Zhengqi1,2,LIN Xiaohui1,LI Weiping1,WANG Yiping1,YUAN Zhiqun3 1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 410082,China 2. College of Mechanical Engineering,Hunan University of Technology,Zhuzhou 412007,Hunan Province,China 3. Department of Mechanical Engineering,Xiamen University of Technology,Xiamen 361024,Fujian Province,China |
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| Abstract: | The complex separated flow induced by wheel and wheel cavity has a great impact on the exterior flow field,and also is one of the major causes of aerodynamic drag. In the present paper,the exterior flow field of a whole car model including wheel is simulated using the computational fluid dynamics method. The related experiments were carried out in HD-2 wind tunnel to validate the reliability of the simulation method. In order to get the accurate flow around rotating wheel and wheel cavity,two different boun... |
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| Keywords: | aerodynamics automobile rotating wheel computational fluid dynamics |
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