柴油机排气过程流动的多维瞬态数值模拟研究  

MULTI-DIMENSIONAL TRANSIENT NUMERICAL SIMULATION FOR EXHAUSTED PROCESS OF DIESEL ENGINE

作　　者：吕继组[1] 白敏丽[1] 邵治家[1] 周剑 

机构地区：[1]大连理工大学能源与动力学院,辽宁大连116023 [2]广州本田增城工厂整车品质科,广东广州511338

出　　处：《工程热物理学报》2008年第11期1933-1936,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No．50276007；No．50576008);辽宁省自然科学基金资助项目(No．20062180；No．20042156)

摘　　要：柴油机排气过程气体的流动直接影响到排气管换热、发动机噪音、废气再循环系统设计等,对柴油机整体性能起着重要作用。因此,本文利用大型通用CFD软件STAR-CD及ES-ICE,在进气压缩、喷雾燃烧过程多维瞬态数值模拟基础上,对柴油机排气过程流动进行多维瞬态数值模拟研究,通过计算给出排气过程中气体的流场分布,为柴油机排气系统的优化设计提供重要的理论指导.Fowl in exhaust process of diesel engine directly affects exhaust pipe heat exchange, engine noise and design of EGR system etc, which determine integral performance of diesel engine. After multi-dimensional transient numerical simulation of intake air compression process and combustion being done, multi-dimensional transient numerical simulation for exhaust process of diesel engine is performed using large universal CFD software STAR-CD and ES-ICE. The distributions of flow field at different time are also provided theoretical reference for optimizing diesel exhaust system.

关 键 词：柴油机 排气过程 多维瞬态数值模拟 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]