中文摘要：

在T型微通道的基础上，对其结构进行改造，提出了一种T型正弦波节微通道，并构建了微型气液反应装置。运用CFD方法，数值研究了微通道内的气泡形成过程及气液分布情况，拟合出了计算T型微通道内气泡液柱尺寸的关联式。结果表明：T型正弦波节微通道内的气泡形成机制与常规T型微通道相同，为挤压机制，颈部断裂过程经历的时间较常规T型微通道稍长。该结构类型的正弦波节微通道与常规平直圆管相比，当量直径增大了50％，气液接触面积相应增大了25％，有效地提高了传质效率。

英文摘要：

A sinusoidal corrugated T- junction microchannel was introduced on the basis of T- junction microchannel, and micro gas - liquid reaction unit was also built. Bubble formation process and gas - liquid distribution in microchannel were investigated numerically and the correlations were obtained to calculate the length of bubble and liquid column. The results show that the bubble formation mechanism is extrusion in the new microchannel, which is the same as conventional T -junction channel. It takes longer for the breakage than conventional channel. The equivalent diameter and gas - liquid contact area of the sinusoidal corrugated microchannel is 50% and 25% lager than conventional horizontal circular tube respectively, which enhances the mass transfer effectively.