侧置式气门发动机进排气道瞬态流场模拟  

Simulation of Transient Flow Field in Intake and Exhaust Ports of Side Valve Engine

作　　者：邱学军 白曙 杨珠凯 殷振中 QIU Xuejun;BAI Shu;YANG Zhukai;YIN Zhenzhong(Huayu Kolben Schmidt Piston Co.,Ltd.,Shanghai 201814,China;Shanghai Diesel Engine Co.,Ltd.,Shanghai 200438,China;School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China;Denso Fuel Injection Co.,Ltd.,Shanghai 201400,China)

机构地区：[1]华域科尔本施密特活塞有限公司,上海201814 [2]上海柴油机股份有限公司,上海200438 [3]江苏大学汽车与交通工程学院,镇江212013 [4]电装燃油喷射有限公司,上海201400

出　　处：《柴油机设计与制造》2020年第3期1-5,25,共6页Design and Manufacture of Diesel Engine

摘　　要：为实现模拟4冲程发动机缸内气流运动过程,在进气道几何模型的结构化与非结构化混合静网格划分的基础上,再进行动网格划分,选取了标准k-ε湍流模型与物料传输模型,搭建适用于瞬态模拟的计算模型;并设计了2种方案的进气道。通过分析进气道缸内平均湍动能和平均滚流比的变化得出,相比方案1,方案2进气道在整个进气阶段内的缸内平均湍动能增加了约11.2%,平均滚流比增加了约13.8%。In order to realize the simulation of the in-cylinder air flow of a four stroke engine,a calculation model for simulating transient intake port was built using the standard k-εturbulence model and material transfer model based on the intake port geometric model divided by structural and nonstructural mixed static mesh flowed by dynamic mesh.Two optimization schemes of intake port were designed.The comparative analysis of the changes of the average turbulent kinetic energy and the average tumble ratio in cylinder before and after the optimization showed that,compared with the first scheme,the second scheme intake port increased average turbulent kinetic energy in cylinder during the entire intake phase by about 11.2%,and the average in-cylinder tumble ratio by approximately 13.8%.

关 键 词：汽油机 进气道优化 瞬态模拟 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]