Unified model for gas-liquid pipe flow via slug dynamics - Part 1: Model development
Unified model for gas-liquid pipe flow via slug dynamics - Part 1: Model development
复制标题
DOI：
10.1115/1.1615246
复制
发表时间：
2003-12-01
影响因子：
3
通讯作者：
Brill, JP
中科院分区：
文献类型：
--
作者：
Zhang, HQ;Wang, C;Brill, JP
建立了一个统一的流体力学模型，用于预测从-90 °到90 °倾角范围内的气液两相管流流型转变、压力梯度、持液率和段塞特性。该模型基于段塞流的动力学，段塞流与所有其他流型共享过渡边界。以整个液膜区为控制体积，将段塞体与液膜区之间的动量交换引入弹状流的动量方程中。弹状流方程不仅可以用来计算弹状流的特性，而且可以用来预测弹状流向其它流型的转变。通过仔细的选择和推广，已经做出了很大的努力来消除闭合关系之间的不连续性。根据两相流的流体力学特性，简化了流型分类。
A unified hydrodynamic model is developed for predictions of flow pattern transitions, pressure gradient, liquid holdup and slug characteristics in gas-liquid pipe flow at all inclination angles from -90degrees to 90degrees from horizontal. The model is based on the dynamics of slug flow, which shares transition boundaries with all the other flow patterns. By use of the entire film zone as the control volume, the momentum exchange between the slug body and the film zone is introduced into the momentum equations for slug flow. The equations of slug flow are used not only to calculate the slug characteristics, but also to predict transitions from slug flow to other flow patterns. Significant effort has been made to eliminate discontinuities among the closure relationships through careful selection and generalization. The flow pattern classification is also simplified according to the hydrodynamic characteristics of two-phase flow.