文中研究了两相流在一种新型并联微通道器内制备单分散性乳液的影响因素． 分别以不同物性的油( 纯油、质量分数为0． 3%的 span83、质量分数为 0． 4%的 span83) 作 为连续相、水作为分散相在微通道内乳化，研究和讨论了流速比、表面张力、毛细管数 ( Ca) 对乳液多分散性和液滴浓度的影响． 数值模拟和实验结果表明:16 个 Y 型树枝状并 联微通道器不仅可以提供完美的流量分布，而且能够制备优质的单分散性乳液( 多分散 度 Pw≤5． 8%) ，并且其能量消耗率低于35J/kg;毛细管数对微通道乳化工程有着显著的 影响，当 Ca≤0． 01 时，生成的乳液具有更好的单分散性;随着两相流表面张力的升高，乳液 单分散性越来越好，但乳液液滴浓度会相应地减小． 当表面张力为27． 6mN/m 时，水 －纯油 乳液的 Pw 为3．0% ～5．8%，而水-0．3%span83 乳液体系的多分散性值仅为其值的1/2． 

In this paper，we study the development of novel multiscale parallel micro-channel contactor for monodisperse waterin-oil emulsification． Oils with different physical properties ( pure oil，0. 3% span83，0. 4% span83) and water are chosen as a continuous phase and a dispersed phase respectively． By using novel multiscale contactor ( sixteen parallel Ytype channels) which offers an equal distribution of flow rate with low energy cost ( less than 35J/kg) ，we have studied and discussed the influence of two-phase flow physical properties ( such as flowrate ratio，surface intension and capillary number) on the emulsion polydispersity experimentally and numerically． Capillary number ( Ca) plays an important role in emulsification progress，and when Ca is less than 0. 01， the mono-disperse emulsion is better． As the surface tension of the two-phase flow increases， the emulsion poly-dispersity is lower and the density of the emulsion reduces． When the surface tension rises to 27. 6mN/m， the polydispersity ( Pw) ranging from 3. 0% to 5. 8% is half of the Pw of water -0. 3% span83 emulsions．