基于AVL-FIRE的汽油机缸内滚流的模拟计算  

Numerical Calculation on Tumble Flows in Gasoline Engine Based on AVL-Fire Code

作　　者：李云清[1] 刘宾[1] 王会霞[1] 

机构地区：[1]北京航空航天大学,北京100083

出　　处：《柴油机设计与制造》2007年第3期6-9,共4页Design and Manufacture of Diesel Engine

摘　　要：利用三维流体力学软件AVL-FIRE,对495汽油机在不同初始缸内流场条件下的压缩和燃烧过程进行CFD模拟计算。给出了汽油发动机压缩过程中不同初始滚流比下缸内速度场的变化趋势,分析了初始流场中滚流空间位置变化对湍动能场的影响,以及初始流场滚流比对燃烧的影响。A numerical calculation of the compression and combustion processes of 495 gasoline engine under different initial in-cylinder conditions is conducted by using three-dimension CFD program code AVL-FIRE. The trend of in-cylinder velocity field change under different initial tumble ratios on compression stroke is derived from the calculation. The in-fluence of in-cylinder tumble location in the initial flow on TKE and the influence of ttanble ratios on combustion are analyzed.

关 键 词：汽油机 滚流 数值模拟 湍动能 

分 类 号：TK412[动力工程及工程热物理—动力机械及工程]