Accessing multidimensional mixing via 3D printing and showerhead micromixer design
Accessing multidimensional mixing via 3D printing and showerhead micromixer design
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DOI：
10.1002/aic.16873
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发表时间：
2020-04
期刊：
影响因子：
3.7
通讯作者：
Haomiao Zhang;Thomas Kopfmüller;Ramona Achermann;Jisong Zhang;Andrew R. Teixeira;Yi Shen;K. Jensen-K.-Jense
中科院分区：
文献类型：
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作者：
Haomiao Zhang;Thomas Kopfmüller;Ramona Achermann;Jisong Zhang;Andrew R. Teixeira;Yi Shen;K. Jensen-K.-Jense
我们提出了一种3D金属打印喷头混合器，用于将两种试剂流有效地混合到有限的混合体积中。每一股流体都被预先分配到多个通道中，以增加混合区的接触面积，从而实现高混合性能和更小的压降。喷头混合器显示出优异的混合性能，由于其能够迅速散布的两个流的重氮偶联反应和计算流体动力学（CFD）模拟的特点。实验结果表明，优越的上级性能的喷头混合器相比，两个常见的商业微型T-混合器，特别是在低雷诺数制度。计算流体动力学结果用于（a）帮助理解混合机制，（B）重现实验观察结果，以及（c）为最佳性能提供设计规范。实验和模拟之间取得了很好的一致性。最终设计包括多个侧面进料入口，以改善喷淋式混合器的混合性能，如经验证的CFD模型所建议的那样。
We present a 3D metal printing showerhead mixer to blend effectively two reagent streams into a confined mixing volume. Each stream is predistributed to multiple channels to increase the contact area in the mixing zone, which enables high mixing performance with smaller pressure drop. The showerhead mixer shows excellent mixing performance owing to its ability to intersperse rapidly the two streams as characterized by the diazo coupling reactions and computational fluid dynamics (CFD) simulations. Experimental results demonstrate superior performance of the showerhead mixer compared to two common commercial micro T‐mixers, especially in low Reynolds number regime. CFD results are employed to (a) help understand the mixing mechanism, (b) reproduce the experimental observations, and (c) inform the design specifications for optimal performance. Good agreement between experiments and simulations is achieved. The final design includes multiple side‐fed inlets for improved mixing performance of the showerhead mixer, as suggested by the validated CFD models.