| 旋转孤立车轮局部流场的影响评价 |
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| 引用本文： | 贾青,李挺,杨志刚.旋转孤立车轮局部流场的影响评价[J].同济大学学报(自然科学版),2014,42(2):0287-0291. |
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| 作者姓名： | 贾青 李挺 杨志刚 |
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| 作者单位： | 同济大学汽车学院,同济大学汽车学院,同济大学 |
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| 基金项目： | 国家“九七三”重点基础研究发展计划（项目编号） |
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| 摘 要： | 以简单孤立车轮为研究对象,在静止和旋转工况下,对有侧偏角和无侧偏角时车轮周围的流场结构进行数值分析和试验验证.计算采用定常雷诺时均Navier-Stokes方程,试验在1∶15的模型风洞中进行.不同工况下车轮周围流场、表面压力系数、气动阻力系数和升力系数等数据的分析结果表明,车轮的旋转会对流场产生巨大影响.车轮旋转使总体压差减小,气动阻力和气动升力下降,气动性能得到改善.
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| 关 键 词： | 孤立车轮 数值模拟 模型风洞试验 定常雷诺时均 |
| 收稿时间： | 2013/3/21 0:00:00 |
| 修稿时间： | 2013/10/22 0:00:00 |
Influence of Rotating Wheels on Isolated Wheel Aerodynamics |
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| JIA Qing,LI Ting and YANG Zhigang.Influence of Rotating Wheels on Isolated Wheel Aerodynamics[J].Journal of Tongji University(Natural Science),2014,42(2):0287-0291. |
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| Authors: | JIA Qing LI Ting and YANG Zhigang |
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| Institution: | Shanghai Automotive Wind Tunnel Center, School of Automotive Studies,Shanghai Automotive Wind Tunnel Center, School of Automotive Studies,Tongji University |
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| Abstract: | To make a research on flow characteristics around wheel, simplified isolated wheel is applied under different conditions including stationary and rotation with different yaw angles by computational simulation, which is validated by experiments. Particularly, steady RNS calculation is adopted in simulation, combined with experiment in a scaled wind tunnel of 1:15. Further, detailed analyses on local flow, surface pressure coefficient, drag coefficient and lift coefficient of wheel in different conditions figure out that rotating wheel affects the flow around isolated wheel significantly. Pressure difference, drag coefficient and lift coefficient are decreased by rotation, which improve aerodynamic performance. |
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| Keywords: | isolated wheel computational simulation scaled wind tunnel experiment steady RNS |
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