| 基于SST湍流模型的超车时汽车外流场变化的仿真分析 |
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| 引用本文： | 谷正气,姜波,何忆斌,周伟. 基于SST湍流模型的超车时汽车外流场变化的仿真分析[J]. 汽车工程, 2007, 29(6): 494-496,527 |
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| 作者姓名： | 谷正气 姜波 何忆斌 周伟 |
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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,长沙,410082;湖南大学,汽车车身先进设计制造国家重点实验室,长沙,410082;湖南大学,汽车车身先进设计制造国家重点实验室,长沙,410082;湖南大学,汽车车身先进设计制造国家重点实验室,长沙,410082 |
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| 基金项目： | 国家自然科学基金;教育部高等学校优秀青年教师教学科研奖励计划;教育部留学回国人员科研启动基金 |
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| 摘 要： | 基于k-w模型的SST(剪切应力输运)湍流模型综合了k-ε和k-w湍流模型在边界层内外计算的优点,能够准确及时预测分离的特性。利用SST湍流模型对轿车超越轿车的过程运用计算机仿真技术进行数值模拟,得出被超轿车在此过程中的气动阻力系数和气动侧力变化曲线图,并对这一工况进行了分析。
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| 关 键 词： | SST湍流模型 超车 仿真 外流场 |
| 修稿时间： | 2006-06-142006-08-21 |
Numerical Simulation on the Change of External Flow Field During Vehicle Overtaking Based on SST Turbulence Model |
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| Gu Zhengqi,Jiang Bo,He Yibin,Zhou Wei. Numerical Simulation on the Change of External Flow Field During Vehicle Overtaking Based on SST Turbulence Model[J]. Automotive Engineering, 2007, 29(6): 494-496,527 |
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| Authors: | Gu Zhengqi Jiang Bo He Yibin Zhou Wei |
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| Affiliation: | Hunan University , State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Changsha 410082 |
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| Abstract: | The based SST (shear stress transport) turbulence model combines the advantages of and turbulence models, performs well in numerical experiment and can accurately and timely predict the characteristics of flow separation. In this paper, the SST turbulence model is used for the numerical simulation on external flow field of vehicle during overtaking process. Hence the changes in drag coefficient and side force coefficient of overtaken vehicle are obtained with the results analyzed. |
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| Keywords: | SST turbulence model Overtaking Simulation External flow field |
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