舞动的液滴：界面现象与过程调控

doi:10.11949/j.issn.0438-1157.20171230

摘要/Abstract

摘要：

液滴动态行为的调控在包括微化工、相变传热、喷雾冷却、农药喷洒、微流控芯片等领域都具有广泛的应用。液滴润湿过程包含着复杂的固液界面现象，借助界面效应对液滴动态行为进行调控是液滴调控领域的热点方向。将围绕多尺度润湿、界面结构驱动的液滴动态行为等过程中的若干科学问题进行综述。首先介绍了多尺度表面润湿基本理论，讨论了核化过程、液滴多尺度润湿、液滴弹跳和液滴多向迁移过程及液滴撞击固体表面过程中的固液界面作用机理，并展现了液滴动态调控在相变传热、喷墨打印、农药喷洒和微流控等工业过程的调控作用、应用以及主要发展趋势和方向。

关键词: 多尺度, 两相流, 相变, 表面, 传递过程

Abstract:

The droplets with different dynamics exist in a variety of industry, including phase change heat transfer, micro-scale chemical engineering, spray cooling, pesticide spraying and microfluidic chip. Interface phenomena has been proved a very important factor for droplet dynamics, which is one of the arc in the field of droplet manipulation. In the past decades, researchers have carried out a series of scientific researches on multiscale wetting, interfacial effect-driven droplet dynamic behaviors, and achieved distinctive and innovative results. In this review, the theoretical basis of multi-scale wetting is presented firstly. Secondly, liquid-solid interfacial interactions in the process of the droplet nucleation, the wetting of liquid on nano and micro structures, droplet jumping, droplet multi-directional migration, and impact of droplet are discussed in detail. Meanwhile, the typical applications of droplet dynamics manipulation such as phase change heat transfer, inkjet printing, pesticide spraying, and microfluidic chip are introduced. Finally, the perspectives of the future development of droplet manipulation are proposed for further intensification and control of related industrial processes.

Key words: multiscale, two-phase flow, phase change, surface, transport process

中图分类号:

TQ026.2

马学虎, 兰忠, 王凯, 陈彦松, 程雅琦, 杜宾港, 叶轩. 舞动的液滴：界面现象与过程调控[J]. 化工学报, 2018, 69(1): 9-43.

MA Xuehu, LAN Zhong, WANG Kai, CHEN Yansong, CHENG Yaqi, DU Bingang, YE Xuan. Dancing droplet: interface phenomena and process regulation[J]. CIESC Journal, 2018, 69(1): 9-43.

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