期刊文献+

汽车后视镜气动干涉阻力特性的数值计算研究 被引量:6

Study on Numerical Simulation of Aerodynamic Interference Drag Properties of Auto Rearview Mirror
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摘要 以获得汽车后视镜最优气动造型和改善汽车燃油经济性为目的,应用计算流体动力学方法对汽车外部流场进行了数值分析,详细描述了汽车后视镜的气动干涉阻力特性,重点分析了后视镜形状和相对车身的横向距离对气动阻力的影响。计算结果表明:后视镜气动阻力占整车气动阻力的4.08%;后视镜的形状和位置对气动阻力影响较大,存在一个最佳的横向距离使得气动阻力系数最大能够下降2.76%。汽车模型的风洞试验验证了该数值计算方法的准确性,计算分析结果为汽车后视镜的设计与改进提供了参考依据。 In order to obtain the optimal aerodynamic shape of auto rearview mirror and improve fuel economy,the CFD method is applied to numerical analysis on automobile external flow field.The interference drag properties of auto rearview influence of its shape and position is great,which at the best horizontal distance the aerodynamic drag coefficient can drop 2.76 %.The wind tunnel trial on car model verifies the accuracy of numerical computation method,and the results of the computationa analysis provide reference basis for the design and improvement of auto rearview mirror.
出处 《湖南工业大学学报》 2010年第3期81-85,共5页 Journal of Hunan University of Technology
基金 国家自然科学基金资助项目(50975083) 国家863计划基金资助项目(2007AA04Z122)
关键词 气动阻力 数值计算 后视镜 干涉阻力 横向距离 aerodynamic drag numerical simulation mirror interference drag level distance
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参考文献9

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二级参考文献15

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