Based on FLUENT airflow mechanics software,the paper carries out simulation research for highway airflow field,applies dynamic mesh technology to realize vehicles movement,explores the highway airflow distribution and changing law when bicycles driving in crosswind,and finally draws some valuable conclusions.%基于 FLUENT计算流体力学软件，对高速公路区域流场进行了模拟研究，采用动网格技术实现汽车运动，探讨了横风下单车行驶时高速公路周边区域流场的分布及变化规律，得出了一些有价值的结论。
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