摘要
本文应用湍流模式,建立了盲肠口门紊动掺混区水流运动的数学模型,在定常流动中,近似具有自相似性.利用相似理论,给出了流函数和流速的相似函数,对掺混区的水流运动进行了模拟计算,并分析了掺混区横向流速梯度及涡粘性系数的变化特性.
In this paper, a mathematical model for flow of turbulent mixing region at the mouth of cecum reach is established based on turbulence model. In the conditions of steady flow, it is proved that the flow has similarity structure at turbulent mixing region. From the theory of similarity, the similarity functions of flow function and velocity are obtained. The flow of turbulent mixing region is numerically simulated and the velocity gradient, virtual kinematic viscosity are analysed.
出处
《水利学报》
EI
CSCD
北大核心
1995年第4期68-75,67,共9页
Journal of Hydraulic Engineering
关键词
盲肠河段
紊动
水流
运动
相似结构
cecum reach
turbulent mixing region
similarity structure
similarity function