基于CFD的柴油机排气道仿真与优化设计  

Simulation and Optimization Design of the Diesel Engine's Exhaust Port Based on CFD

作　　者：殷玉恩[1] 康彦红[1] 刘胜[1] 田永海[1] 

机构地区：[1]中国北方发动机研究所,山西大同037036

出　　处：《柴油机》2010年第5期31-33,共3页Diesel Engine

摘　　要：建立了某柴油机排气道流体域三维模型并进行稳态CFD计算,发现排气道流通性较差;在对排气道内部流场进行分析的基础上,指出了排气道结构上的不足之处,并针对性地进行了改进设计。改进后排气道的仿真结果显示:排气道性能获得了较大提升。The internal fluid domain 3D model of the exhaust port of a diesel engine was established and the steady-state CFD calculation was carried on.The results show that the flowing performance of the exhaust port is bad.Then the deficiency is pointed out and the exhaust port is optimized against the deficiency.The simulation results show that the performance of the optimized exhaust port has been greatly increased.

关 键 词：柴油机 排气道 CFD 优化设计 

分 类 号：TK423.44[动力工程及工程热物理—动力机械及工程]