柴油机进气和压缩过程气体流动三维瞬态模拟  

Diesel Engine Intake and Compression Process Three-dimensional Transient Simulation of Gas Flow

作　　者：谭泽飞[1] 王鑫鑫[2] 

机构地区：[1]西南林业大学机械与交通学院,昆明650224 [2]昆明理工大学云南省内燃机重点实验室,昆明650500

出　　处：《农机化研究》2012年第11期233-236,240,共5页Journal of Agricultural Mechanization Research

基　　金：国家自然科学基金项目(51105184)

摘　　要：柴油机进气和压缩过程的缸内气体流动是极其复杂的三维湍流运动,直接影响着混合气形成和燃烧过程。采用AVL Boost模拟计算获得进气入口流量、入口温度和出口压力作为瞬态模拟的边界,采用AVL Fire软件建立柴油机进气-压缩过程瞬态仿真模型,计算分析了进气和压缩过程、柴油机缸内流场的变化以及涡流的形成过程,并对压缩行程缸内湍动能的发展和变化进行了较深入的分析。Gas flow in cylinder of diesel engine intake and compression process is extremely complex three dimensional turbulence, Is affecting the carburetion and the combustion process directly. Uses AVL the Boost analog computation to obtain the air admission entrance current capacity, the inlet temperature and the outlet pressure takes the transient state simulation the boundary, software to build diesel engine using AVL Fire intake - compression transient simulation model, Based on further analysis of the gas tanks, diesel engine and compression process flows as well as changes in the process of the formation of the vortex, And the rapids kinetic energy development and the change has made the thorough analysis to the compression stroke cylinder in.

关 键 词：柴油机 进气过程 压缩过程 涡流 湍流 

分 类 号：TK421.3[动力工程及工程热物理—动力机械及工程]