车用催化转化器非稳态压力场的数值模拟  

Numerical Simulation of Pressure Field in Automotive Catalyst Converter for Light-off Process

作　　者：吕吉平[1] 王伟[2] 

机构地区：[1]青岛酒店管理职业技术学院 [2]奇瑞汽车有限公司

出　　处：《内燃机与动力装置》2007年第4期17-19,共3页Internal Combustion Engine & Powerplant

摘　　要：建立基于化学反应的催化转化器的数值模型,并利用计算流体力学的方法,对催化转化器起燃过程内部压力场进行模拟。模拟结果显示,起燃过程中催化器内部压力不断升高,同时催化器入口和出口间的总压差也不断提高,压力损失也随之提高。The numerical modal of catalyst converter was established based ou the chemical reaction and the unsteady pressure field can be solved by computational fluid dynamics method. The simulation resuits show that pressure and the difference of total pressure between inlet and outlet increase during the heating up, so the pressure losses arise with the development of inlet pressure.

关 键 词：催化转化器 压力损失 总压 数值模拟 

分 类 号：TK414.5[动力工程及工程热物理—动力机械及工程]