发动机进气流动三维瞬态数值模拟研究  

Three-dimensional transient numerical simulation of engine intake flow

作　　者：罗马吉[1] 黄震[1] 陈国华[2] 蒋炎坤[2] 

机构地区：[1]上海交通大学,上海200030 [2]华中科技大学,湖北武汉430074

出　　处：《空气动力学学报》2005年第1期74-78,83,共6页Acta Aerodynamica Sinica

基　　金：国家自然科学基金重点资助项目 (50 1 360 4 0 )

摘　　要：采用任意拉格朗日 -欧拉法 (ALE法 )和所提出的动态网格生成新方法 ,实现了车用发动机进气流动过程的三维瞬态可压缩湍流数值模拟 ,湍流模型采用经压缩修正的k ε双方程模型。计算结果揭示了发动机进气过程的三维瞬态流动特性 。To meet more and more stringent emission requirements and improve the economical performance, organizing reasonable gas motion in vehicle engine's cylinder is very important. However, gas motion in the cylinder is mainly affected by the intake flow process. Three-dimensional transient numerical simulation is studied for the intake flow process in the vehicle engine by using the arbitrary Lagrangian-Eulerian method and a proposed dynamic grid generation method. Turbulence effect is represented by a revised k-Ε model. The calculated results reveal the three-dimensional transient flow characteristics of engine intake process, which give important information for the optimal design of engine intake system.

关 键 词：三维瞬态数值模拟 进气过程 车用发动机 ALE法 流动 进气系统 k-ε双方程模型 湍流模型 气流 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程] TK411.3[动力工程及工程热物理—动力机械及工程]