微尺度气液液三相流研究进展

Gas/liquid/liquid three-phase flow at micrometer scale

微尺度下的气液液三相流动是近年来微流控、微化工、微分析等领域的重要内容.关于微尺度下的气液液三相流研究主要集中在新型微分散设备和技术,分散尺寸调控规律,微通道内流动与传递特性,以及气液液三相微流体在反应、分离、材料制备中的应用等方面.已有的研究结果表明,微尺度气液液三相流相对于液液、气液两相流过程表现出了更复杂的分散规律和独特的流动、传递、反应特性.本文主要针对以上几个方面的研究进展进行综述,并对其未来的发展方向进行了展望.

Gas-liquid-liquid three-phase flow at micrometer scale is an important issue in the research of microfluidics, microstructured chemical system, μ-TAS, and some other fields. The research topics on the gas-liquidliquid three-phase microflow are mainly focused on new devices and techniques of microdispersion, scaling laws of dispersed particles, flow and transport properties in microchannels, and the application of gas-liquid-liquid three-phase microflows in reaction, separation and material preparation processes. The results show the gas-liquidliquid three-phase microflows have more complicated dispersed rules and unique flow, transport and reaction performances, compared with the gas-liquid and liquid-liquid two-phase processes. The research progress of gasliquid-liquid three-phase microflows are summarized and the future development directions are suggested.