摘要
标定工况下,对某16缸机车用柴油机进行联合仿真。利用GT-cool软件对柴油机整体进行一维仿真,得到冷却系统各个管路和机体的流量、温度和压力等数据,然后将一维仿真的结果作为边界条件,采用ANSYS CFX软件对冷却效果最差的第8缸进行冷却水三维仿真,得到此缸冷却水的内部流场、温度场和压力场,最后得出结论:排气管冷却水道两侧棱角处温度过高,存在流动死区,需进行冷却优化。实例表明,联合仿真可用于工程计算,能满足精度要求。
A co-simulation is done on one 16-cylinder locomotive diesd engine under rated working conditions. This paper gets data on flow rate, temperature and pressure of cooling system and cylinder block using GT - cool software and then uses CFX software gives a 3D-simulation on the cooling water of the eighth cylinder which is worsen cooled to get internal flow field, temperature field and pressure field. The results shows that temperature is very high in two edges of cooling passages in the exhaust manifold and there is a dead cooling area, so its cooling needs to be optimized. The actual examples have indicated that co -simulation method might be applied in practical engineering.
出处
《内燃机与动力装置》
2012年第6期26-30,44,共6页
Internal Combustion Engine & Powerplant
关键词
柴油机
冷却系统
联合仿真
Diesel Engine
Cooling System
Co- simulation
