摘要
利用原始变量,交叉网格的方法,以及采用κ-ε湍流模型,计算了离轴受限射流三维湍流流场,计算结果与用LDV测量结果作了比较,结果是满意的。计算结果提供了这样一个复杂的三维流场的清晰图象,为研究具有离轴射流的预燃室的稳燃机理提供了很多有用的信息,对计算结果作了详细的分析和讨论后,指出这样一个流场的重要三维特征是在θ方向梳线有大角度的扭曲。
Using primary variables and staggered, the 3-D turbulent flow field for an off-axis confined jet was computated by k-ε model of turbulent flow. Computing results on comparison with measurements are satisfactory. The computing results have provided much information on the flow pattern and given a basic understanding of the mechanism of stable combustion for pre-cornbustion chambers with an off-axis confined jet. A detail analysis shows that one of the major characteristics of the flow field is the large twist of the streamline in the 9 di-rection.
出处
《力学学报》
EI
CSCD
北大核心
1990年第2期146-153,共8页
Chinese Journal of Theoretical and Applied Mechanics
关键词
射流
湍流
流场
计算
流体
computational fluid dynamics, Turbulent flow, confined jet. combustion dynamics
