Abstract:

Structured packing is formed with corrugated sheets according to certain rules. The liquid phase move downward corrugated sheets，while the gas is in cocurrent or countercurrent flow with liquid phase in the channel formed by adjacent corrugated plates. Therefore，the operating flexibility and mass transfer efficiency of packed tower depend on the hydraulic characteristics of gas-liquid two-phase flow. The state of liquid phase film flow on corrugated sheets receives much concern for its wide range applications. This paper provides an overview on the methods for simulating the film flow on two-dimensional corrugated sheets from the aspects of physical modeling，free interface treatment，surface tension model and turbulence model. Moreover，several examples are analyzed and summarized to clarify the research status in this topic.

摘要：

规整填料是由规则排列的波纹板组成的。液相是沿着波纹板壁面往下流动，而气相则是在波纹板之间形成的通道内与液相呈并流或逆流的状态。因此，气液两相的水力学特性决定着填料塔的操作弹性和质量传递效率。波纹板上的液膜流动状态因在很多应用领域都发挥作用而备受关注。本文从物理建模、自由界面处理方法、表面张力模型以及湍流模型等方面对规整填料波纹板上的二维液膜数值模拟方法作了详细的陈述，并且对该领域的研究现状作了进一步分析和总结。