在结构化的包装的列描绘复杂二阶段的水动力学要求一个强大的建模工具。当一个人试图在列内为详细二阶段的流动建模时,传统的二维的模型展出限制。现在的纸论述三维的计算液体动力学(CFD ) 在列的一个代表性的单位模仿二阶段的流动的模型。单位由一条全部折皱隧道组成并且描述真实液体流动条件很好。与 Flexipak 1Y 包装的列上的详细不稳定的二阶段的 3D CFD 计算在液体(VOF ) 的体积以内被实现数学框架。CFD 模型被把液体电影的计算厚度与可得到的试验性的数据作比较验证。特殊注意在水动力学上被给严肃的效果的定量分析。处于液体团流动率和计算压力落下损失的变化被发现是与试验性的观察一致的品质上。
Characterizing the complex two-phase hydrodynamics in structured packed columns requires a power- ful modeling tool. The traditional two-dimensional model exhibits limitations when one attempts to model the de- tailed two-phase flow inside the columns. The present paper presents a three-dimensional computational fluid dy- namics (CFD) model to simulate the two-phase flow in a representative unit of the column. The unit consists of an CFD calculations on column packed with Flexipak 1Y were implemented within the volume of fluid (VOF) mathe- matical framework. The CFD model was validated by comparing the calculated thickness of liquid film with the available experimental data. Special attention was given to quantitative analysis of the effects of gravity on the hy- drodynamics. Fluctuations in the liquid mass flow rate and the calculated pressure drop loss were found to be quali- tatively in agreement with the experimental observations.