Industrial University Cooperation Project: Analysis of Turbulent Liquid Dispersions with Mass Transfer

本研究项目将开发和验证两相流模型 在剧烈搅拌的液-液分散体中。 结果将 对于按比例放大相间输送过程具有直接效用 发生在这些系统中。 所提出的模型包括分散的 由于液滴的聚结和破裂而导致的相微观混合。 的 湍流动量和能量平衡方程 相通过摩擦项耦合到分散相。 液滴总数平衡方程的同时求解允许 局部液滴尺寸分布的计算，分散相 微观混合，和摩擦损失的连续相， 分布式系统 流体动力学和分散相模型是 耦合到守恒方程来模拟相间传输。 实验是针对物理平衡的液-液体系进行的 在两个数量级以上的容器中的分散，以测量 与模型比较空间相关液滴尺寸数据 预测. 平均流和湍流的测量是由 与湍流输运模型的比较和验证。

This research project will develop and verify models for two-phase flow in turbulently agitated liquid-liquid dispersions. The results will have direct utility for scale-up of interphase transport processes occurring in these systems. The proposed model incorporates dispersed phase micromixing due to coalescence and breakage of droplets. The turbulent momentum and energy balance equations for the continuous phase are coupled to the dispersed phase through the friction term. Simultaneous solution of the drop population balance equation permits calculation of the local drop size distribution, dispersed-phase micromixing, and the frictional losses of the continuous phase for a distributed system. The hydrodynamic and dispersed phase models are coupled to the conservation equation to model interphase transport. Experiments are conducted for physically equilibrated liquid-liquid dispersions in vessels over two orders of magnitude to measure spatially dependent drop size data for comparison with model prediction. Measurements of mean flow and turbulence are made for comparisons with and verification of the turbulence transport model.