基于CFD的某汽油机排气歧管仿真分析  

Simulation Analysis on Exhaust Manifold of Certain Gasoline Engine Based on CFD

作　　者：范平丽 陈园明[1] 许涛[1] 阮仁宇[1] 朴红花[1] 

机构地区：[1]安徽江淮汽车股份有限公司技术中心,安徽合肥230601

出　　处：《内燃机》2014年第4期4-6,共3页Internal Combustion Engines

摘　　要：首先通过一维热力学软件BOOST计算排气歧管的边界条件,然后通过三维CFD软件FIRE计算排气歧管内部的气体流动情况。该计算为瞬态计算,选择了额定工况、倒拖工况以及怠速工况三个典型工况点。通过计算,得到了排气歧管的换热系数分布以及温度分布。At first, boundary conditions of exhaust manifold were calculated by using 1D thermodynamic software BOOST. And then gas flow distribution in manifold was calculated, too. The calculation mode was transient simulation. The considered operating points were rated speed, motored, low idle. The heat transfer coefficient distribution and temperature distribution in exhaust manifold were got by simulation.

关 键 词：CFD 排气歧管 换热系数 温度 

分 类 号：TK412[动力工程及工程热物理—动力机械及工程]