| 小轿车绕流流场的三维数值模拟 |
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| 引用本文： | 陈景秋,樊雪峰,胡韩飞.小轿车绕流流场的三维数值模拟[J].重庆大学学报(自然科学版),2004,27(10):134-137. |
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| 作者姓名： | 陈景秋 樊雪峰 胡韩飞 |
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| 作者单位： | 重庆大学,工程力学系,重庆,400030;重庆大学,工程力学系,重庆,400030;重庆大学,工程力学系,重庆,400030 |
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| 摘 要： | 利用商用计算流体力学(CFD)软件PHOENICS与CAD软件相结合,对长安奥托SC7081A型小轿车周围流场进行了三维数值模拟,重点分析了小轿车尾部的湍流情况.结果表明:由于小轿车外形的复杂性和地面效应,面包车周围的流场极其复杂且表现出三维湍流特征;在汽车尾部区域,由于气流在此处突然失去附着,形成马蹄涡和拖拽涡,使尾部气流的流动状况变得更加复杂,大尺度涡的形成使得气流耗散的能量增加,从而使汽车的阻力显著增大.
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| 关 键 词： | 汽车空气动力学 CFD PHOENICS PARSOL |
| 文章编号： | 1000-582X(2004)10-0134-04 |
| 修稿时间： | 2003年2月25日 |
Numerical Simultation of the External Flow Around a Car Body |
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| CHEN Jing-qiu,FAN Xue-feng,HU Han-fei.Numerical Simultation of the External Flow Around a Car Body[J].Journal of Chongqing University(Natural Science Edition),2004,27(10):134-137. |
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| Authors: | CHEN Jing-qiu FAN Xue-feng HU Han-fei |
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| Abstract: | Using the PHOENICS software with CAD, the 3-dimensional airflow around a car is numerically simulated, the wake flow is discussed in detail. The results show that due to the complexity of the body shape and the interaction of the ground, the external flow is very complicated and shows well-developed turbulence. In the wake area, because of the appearance of flow separation and towing vortices, and the formation of the horseshoe vortices, the drag is in general increased. |
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| Keywords: | automobile aerodynamics CFD PHOENICS PARSOL |
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