非道路用柴油机气流运动及喷雾数值模拟分析  

Numerical Simulation Analysis of Airflow and Spraying Process in a Non-road Diesel Engine

作　　者：文醉[1] 罗马吉[1] 向梁山[1] 

机构地区：[1]武汉理工大学汽车工程学院,湖北武汉430070

出　　处：《小型内燃机与摩托车》2011年第4期41-44,共4页Small Internal Combustion Engine and Motorcycle

摘　　要：利用CFD软件STAR-CD及ES-ICE对柴油机压缩喷雾过程进行数值模拟分析。模拟计算从进气过程开始,充分考虑了进气过程给缸内流场带来的影响,分析了喷雾前缸内流场及喷雾过程。研究表明,哑铃型燃烧室明显增强了压缩末期缸内涡流强度,燃烧室偏心布置使得缸内气流运动不均匀,燃烧室内的燃油分布也不均匀,各个喷孔方向上燃油喷射状况并不相同。The CFD software STAR-CD and ES-ICE was used to simulate the compress and injection process of diesel engine. The simulation started from the intake process, so the effects of intake process were fully considered, and analysis was focused on in-cylinder flow field before and after injection process. Research shows that dumbbell combustion chamber can obviously increase the intensity of swirl in cylinder, and the combustion chamber located eccentrically can make in-cylinder flow and the appearance of every spray hole was different. asymmetry, so was the distribution of gas mixture,

关 键 词：非道路用柴油机 哑铃型燃烧室 喷雾过程 

分 类 号：TK421.3[动力工程及工程热物理—动力机械及工程]