| 汽车气动力计算 |
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| 引用本文： | 梁德旺,秦毅.汽车气动力计算[J].南京航空航天大学学报,1998,30(2):207-210. |
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| 作者姓名： | 梁德旺 秦毅 |
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| 作者单位： | 南京航空航天大学动力工程系 |
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| 基金项目： | 江苏省“青蓝工程”基金 |
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| 摘 要： | 用Ｆａｖｒｅ平均ＮＳ方程和Ｂ／Ｌ代数湍流模型对Ｓａａｂ９００汽车绕流流场进行了数值模拟，给出了汽车绕流流场的基本特征，探讨了车速对绕流流场，如车尾流动分离点，尾涡及汽车的阻力特性的影响，并建立了尾涡长度与汽车阻力系数之间的关系。
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| 关 键 词： | 汽车 气动力 湍流计算 N－S方程 绕流流场 |
Calculation of Flow Field of Automobile |
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| Abstract: | A flow field around Saab900 car is calculated with Favre averaged Naver Stokes equations and Baldwin/Lomax turbulence model. The features of the field around the car are described and the effect of speed of the car on the flow field features, such as separating position of boundary layer, tail votex and drag of the automobile is discussed. The relationship between the length of tail vortex and the coefficient of the drag is established. |
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| Keywords: | automobiles aerodynamic forces computation of turbulent flow |
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