Two chaotic micromixers (Models A and B) based on the split‐and‐recombine principle using multilayer microchannels are proposed and the mixing performance was analyzed numerically and experimentally for a wide range of Reynolds numbers. The fluid flow and mixing performance were numerically analyzed by solving Navier‐Stokes equations. Micromixers were fabricated using a soft‐lithography technique. As working fluids, water and a dye/water mixture were used. Quantitative and qualitative analyses were performed using confocal scanning microscopy and image processing techniques. The micromixers could enhance the mixing performance by expanding the interfaces between the working fluids to be mixed. The results confirm the superior mixing index of Model B compared to that of Model A.

中文翻译：

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交叉结构混沌微混合器混合的数值与实验研究

提出了两个使用多层微通道的基于分裂-重组原理的混沌微混合器（模型A和B），并针对各种雷诺数进行了数值和实验分析。通过求解Navier-Stokes方程数值分析了流体流动和混合性能。微型混合器是使用软光刻技术制造的。作为工作流体，使用水和染料/水混合物。使用共聚焦扫描显微镜和图像处理技术进行定量和定性分析。微型混合器可以通过扩展要混合的工作流体之间的界面来增强混合性能。结果证实了与模型A相比，模型B的混合指数更高。