气液两相分层流动相间结构稳定性分析

An Analysis on the Interphase Structure Stability of Gas-Liquid Stratified Flow.

利用线性稳定理论.对气液两相分层流动模型进行了严格的理论分析.模型中考虑液相粘度的影响,得到了用于判断分层流气液相间结构稳定性的准则。此准则可以广泛应用于各种粘性流体的流型判断,通用性好,并且与泰特尔(Taitel)准则进行了比较。由于该分层流稳定性判别准则充分考虑了粘度影响,因而更适用于油气混输管道的计算,并可将其作为判断从分层流向其它流型转化的依据,为更准确地选择混相输送模型方程提供了更可靠的准则关系式。

A theoretical analysis is made,by applying linear stability theory,orl the model of gas-liquid stratified flow. In the model the effect of liquid viscosity is considered,and the principle given for judging the interphase structure of gas-liquid stratified flow. This principle, applicable for the flow patterns of fluid with various viscosity,is compared with Tailtel Principle. Due to its adequate consideration on the effect of viscosity,this principle is more applicable for the calculation of oil/gas mixed flow, and more reliable in choosing model equations of mixed flow when used as a judging basis for transform from stratified flow to other flow patterns.