| 新型裙板对重型车气动特性的影响 |
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| 引用本文： | 王新宇,胡兴军,李腾飞,廖磊.新型裙板对重型车气动特性的影响[J].吉林大学学报(工学版),2012(Z1):37-40. |
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| 作者姓名： | 王新宇 胡兴军 李腾飞 廖磊 |
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| 作者单位： | 吉林大学 汽车仿真与控制国家重点实验室;中国第一汽车集团技术中心 |
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| 基金项目： | 国家自然科学基金项目(50805062);吉林省重大科技支撑计划项目(20096005);吉林大学基本科研业务费项目 |
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| 摘 要： | 应用数值模拟的方法,采用SST k-omega湍流模型,仿真分析了一种新型变速裙板对重型车气动特性的影响。本研究中不考虑侧风影响,仅模拟了以25m/s车速正常行驶时的流场特性。计算结果表明,采用加速裙板后模型较原始型风阻降低1.3%。鉴于原始型风阻系数已经较低,该结果达到了预期效果。分析发现,加速裙板的影响集中在尾流区,改善了尾部流场的环形漩涡结构,从而降低了风阻。
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| 关 键 词： | 车辆工程 加速裙板 数值模拟 重型载货汽车 尾流结构 环形漩涡 |
Impact of one novel side skirt on aerodynamic characteristics for heavy-duty truck |
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| WANG Xin-yu,HU Xing-jun,LI Teng-fei,LIAO Lei.Impact of one novel side skirt on aerodynamic characteristics for heavy-duty truck[J].Journal of Jilin University:Eng and Technol Ed,2012(Z1):37-40. |
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| Authors: | WANG Xin-yu HU Xing-jun LI Teng-fei LIAO Lei |
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| Affiliation: | 1(1.State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China;2.China FAW Gruop Corporation R&D Center,Changchun 130011,China) |
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| Abstract: | The method of numerical simulation was used to calculate the aerodynamic impact of a novel type of skirt on a tractor-trailer heavy-duty truck with SST k-omega turbulence model.And the novel skirt is named as accelerating skirt because of its accelerating effect on the bottom airflow.The vehicle speed was given in 25 m/s without crosswind to simulate the real running condition in this study.The results revealed the effectiveness of accelerating skirt,which generated a satisfactory drag reduction by 1.3% compared to the original skirt model.According to the analysis,the impact of the accelerating skirt concentrated in the wake,which improved the structure of the ring vortex there,thus reduce the drag. |
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| Keywords: | vehicle engineering accelerating skirt numerical simulation heavy-duty truck wake structure ring vortex |
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