【摘要】 对某项目轿车进行了数值模拟,介绍了汽车形体外流场的模拟原理和步骤,得到了整车的流场结构和尾流场的涡系结构,成功地模拟了气流分离和拖拽涡现象。在数值模拟基础上,对流场气流的横纵向流动状况、尾部涡系结构,气流分离机理以及拖拽涡的形成与发展机理作了详细分析与讨论。更多还原

【Abstract】 In this paper, numerical simulation of a car was done, the principle and process of the simulation of the flow-field around the car were introduced,the structure of whole outer flow-field and trailing vortices were presented. The appearance of flow separation and towing vortices was simulated successfully. Based on the numerical simulation,vertical and horizontal flowing state of the flow in the flow-field,wake vortices structure,the mechanism of flow separation and the formation and development of trailing vortices were discussed in detail.更多还原