基于PowerFLOW的重型卡车外流场优化模拟分析

Aerodynamic Optimization Analysis of the Heavy Duty Truck Based on PowerFLOW

利用基于LBM方法的CFD软件PowerFLOW对某重型卡车驾驶室展开外流场模拟分析,对外流场影响较大的8个设计参数,进行DOE优化,得出既符合工程设计要求,外流场风阻系数又最优的参数组合,并应用到外CAS设计中,最终整车外流场风阻系数Cd<0.540,远低于国内的竞争对手。

We use the software PoweFLOW which based on LBM method to analyze the aerodynamic performance of the heavy duty truck. In order to find out the parameter group which not only good to engineering development, but also good to aerodynamic performance. We use the DOE method to optimize the8 engineering parameters which high influence to the aerodynamic performance. Then All the parameters are implemented on CAS which finally vehicle Cd〈0.540. It is better than the domestic competitors.