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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。
Based on the linear stability theory, a rigorous theoretical analysis of the gas-liquid two-phase stratified flow model is made, and the influence of the liquid viscosity is taken into account in the model to get the criterion for judging the stability of stratified gas-liquid interphase structures. This standard can be widely used to determine the flow pattern of various viscous fluids, has good generality and is compared with Taitel’s criterion. Because of the consideration of the influence of viscosity, the criterion of stratified flow stability is more suitable for the calculation of oil and gas pipelines, and can be used as the basis for judging the transition from stratified flow to other flow patterns. In order to select the mixed phase more accurately, Model equations provide a more reliable guideline.