摘要
将柴油机缸内气体与整个燃烧室部件(气缸盖-气缸套-活塞组)作为一个耦合体,在对耦合体进行传热数值模拟的基础上得到缸内流动计算的壁面边界条件.利用大型通用CFD软件STAR-CD及ES-ICE对6110柴油机缸内三维非稳态流动进行数值模拟研究,着重分析不同初始条件及燃油喷射对缸内流动的影响.研究结果表明初始条件在柴油机进气过程缸内流场多维计算中主要影响流场的流动状态,特别是涡团形状和中心位置;喷雾过程中燃油的喷射流动直接影响到缸内的流场分布.
Regarding in-cylinder gas of diesel and its group, and cylinder liner） as a coupling whole, the and the wall boundary condition of in-cylinder flo transient flow numerical simulation of 6110 diesel combustion chamber parts （cylinder head, piston heat transfer numerical simulation is done on it w compu engine is tation is obtaine performed using d. Three-dimensional large universal CFD STAR-CD and ES-ICE, the influence of different initial conditions and fuel injection on er flow is specially analyzed. From the results the flow state mainly influencing the flow field conditions of in-cylinder flow field computation of diesel engine intake process can be seen clearly, especially the form and the center of vortex. And the in-cylinder flow field distribution is directly influenced by the fuel injection flow in the process of spray.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2008年第3期344-350,共7页
Journal of Dalian University of Technology
基金
国家自然科学基金资助项目(50276007
50576008)
辽宁省自然科学基金资助项目(20062180
20042156)
关键词
柴油机
初始条件
喷雾
缸内流动
diesel engine
initial situation
fuel spray
cylinder flow
