An overview of the mixing performances of micro T mixers operating with a single fluid is presented. The focus is on the relationship between the flow features and mixing. Indeed, T mixers are characterized by a variety of regimes for increasing Reynolds numbers; they are briefly described, in particular in terms of the three-dimensional vorticity field, which can explain the different mixing performances. The effects of changes in the aspect ratio of the channels are also reviewed. The role of instability and sensitivity analyses in highlighting the mechanisms of the onsets of the different regimes is then described. These analyses also suggest possible geometrical modifications to promote mixing. We focus on that consisting of the downward tilting of the inlet channels (arrow mixers). Arrow mixers are interesting because the onset of the engulfment regime is anticipated at lower Reynolds numbers. Hence, the mixing performances of arrow mixers with varying Reynolds number are described.

中文翻译：

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微型T型和箭型混合器的流量特性和混合概述

概述了使用单一流体运行的微型T混合器的混合性能。重点是流动特征和混合之间的关系。确实，T混合器的特点是有多种增加雷诺数的方法。对它们进行了简要描述，尤其是三维旋涡场，可以解释不同的混合性能。还回顾了通道长宽比变化的影响。然后描述了不稳定性和敏感性分析在强调不同机制发作机制中的作用。这些分析还提出可能的几何修饰以促进混合。我们专注于入口通道（箭头混合器）向下倾斜的过程。箭头混合器之所以有趣，是因为预计在较低的雷诺数下会发生吞噬状态。因此，描述了具有变化的雷诺数的箭头混合器的混合性能。