内燃机进气流动数值计算中三维几何建模问题的探讨

Discussion on the Three-dimension Modeling about Computation for Intake Flow of I.C.Engine

本文主要对内燃机进气流动数值计算中的三维几何建模的方法进行了探讨,并针对进气道稳流试验台的仿真计算提出了几种几何模型,计算结果与试验数据进行了比较,分析了各模型的计算误差,表明三维简化几何模型的结构对计算精度有较大影响。

The three-dimension modeling about computation for intake flow of I. C. engine is discussed. Various geometric models are given for the computation on the base of steady inlet flow test rig. The computational results are compared with the experimental ones. Meanwhile, the errors are analyzed and compared among these models. It＇s shown that the structure of the simple geometric model has important effects on the cost and error of computation.