基于CFD的汽车天线的外流场和噪声分析

Analysis on the External Flow Field and the Noise around Automobile Antenna Based on CFD

CFD(计算流体力动力学)方法对于评估和改进汽车的气动性能,指导汽车设计具有重要意义。利用CFD方法对某款汽车的外流场和噪声进行模拟仿真分析,得出其压力云图、速度云图和速度矢量图,并计算出整车的风阻系数和升力系数。通过对比分析两款天线的计算结果,可以为车身空气动力学设计分析提供工程参考,降低整车开发周期,提升产品性能。

The method of CFD (Computational Fluid Dynamics) has important significance for assessing and improving the aerodynamic performance in the process of automobile design. This paper discusses the application of the CFD method by the simulation analysis of flow field and noise for a car, from which we obtain the pressure contour, velocity contour and velocity vector graphic, and also calculate the drag coefficient and lift coefficient of the vehicle. The calculation results of two antennas show that this method can provide reference to vehicle aerodynamic analysis, reduce the vehicle development cycle and improve the product performance.