摘要
本文旨在用三维非定常流模型计算气缸内的空气流动。较详细地叙述了气缸内混合流体的基本控制方程,该组方程以直喷式柴油机气缸内流场为对象,并包括了燃油喷雾及燃烧的模化计算。基本控制方程经“平均化”后,结合紊流模型,可用以计算气缸内的流场。 根据这一方法建立了相应的计算程序,进行了初步的尝试,并给出了最初的结果。计算表明,尽管三维非定常流动模型从理论上来说是可行的,但其浩大的计算量仍难以在目前一般计算机上实现,有必要开展并行计算研究,并开发相应的计算机绘图软件。
In this paper, 3-dimensional unsteady flow model for calculating gas flow in cylinder is introduced. In basic governing equations, the modelling of spray and combustion of fuel are included, through averaging processes and combining with turbulent flow model, the program for calculating 3-dimensional unsteady flow in cylinder is developed. Some calculated results are given.It has been found that this program can be used to calculate the 3-dimensional unsteady flow in cylinder, but it can not be realized in ordinary computer due to enormous calculating work. It is necesary to develop such as parallel calculating method for cutting down the calculating time.
出处
《中国造船》
EI
CSCD
北大核心
1992年第4期98-106,共9页
Shipbuilding of China
