基于ANSYS CFD的厢式货车外流场的数值分析

Numerical Simulations and Analysis on External Flow Field of Van Body Truck Based on ANSYS CFD

运用有限元计算流体力学分析软件ANSYS CFX,采用其所带的SST模型,对厢式货车的外流场进行了数值模拟,计算出其气动阻力,与试验结果进行了对比,有较好的模拟精度。分析了厢式货车的压强分布云图和外流场流线图,为其减阻节能技术提供了参考。

With the use of SST model of the finite-element computational fluid dynamics software ANSYS CFX, the paper performs the numerical simulation on aerodynamic drag of the van body truck, and computes the aerodynamic drag, studies the pressure distributing of the body,then the result is compared with the experimental data to verify the accuracy of numerical simulation. Through Analysis of the surface pressure contour plots and flow lineshape, which provides basic reference for the reduction of van body truck aerodynamic drag.