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Simulation of Droplet-Formation and -Interaction in Emulsification Processes

机译：乳化过程中液滴形成和互动的模拟

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AbstractEmulsification is a key operational step in many processes for production and functionalization of dispersed liquid systems. Within the membrane emulsification process, emulsified droplets are formed from the bulk liquid at the individual pores of a porous solids body or surface. New interface area is produced in this way where the drops may get immediately in contact. This interaction of emulsified droplets may lead to relative movement and deformation (sliding) of the droplets, to droplet repulsion or even droplet coalescence, thus influencing the final emulsion droplet size distribution. Multiphase flow modeling with discrete interface tracking is used here to analyze the droplet formation and the droplet contact behaviour in the membrane emulsification process. A modification of the standard Volume-of-Fluid model (VOF) for multiphase flow is introduced that allows describing droplet interactions on the macroscale (drop size) including droplet contact, coalescence or bouncing. A proof of concep...
机译：抽象乳化是分散液体系统的生产和功能化的许多方法中的关键操作步骤。在膜乳化过程中，乳化液滴由多孔固体体或表面的各个孔的散装液体形成。新的接口区域是以这种方式生产的，其中滴度可以立即接触。乳化液滴的这种相互作用可能导致液滴的相对运动和变形（滑动），以液滴排斥或甚至液滴聚结，从而影响最终的乳液液滴尺寸分布。这里使用具有离散界面跟踪的多相流动建模来分析膜乳化过程中的液滴形成和液滴接触行为。引入了用于多相流的标准流体模型（VOF）的修改，允许描述包括液滴接触，聚结或弹跳的宏观上（跌落尺寸）上的液滴相互作用。概念证明......

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