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Numerical investigations of a passive micromixer with tree shape obstacles based on fractal principle and Murray’s law
Journal of Dispersion Science and Technology ( IF 2.2 ) Pub Date : 2020-06-02 , DOI: 10.1080/01932691.2020.1770610
Yao Chen 1 , Xueye Chen 1 , Shufen Liu 1
Affiliation  

Abstract

This work mainly studies the mixing efficiency and mixing energy cost (MEC) of the tree-shaped obstacle micromixer based on fractal principle and Murray’s law. The obstacles are regularly arranged on both sides of the T-type microchannel. The mixing efficiency and MEC of primary tree-shaped obstacle (PTSO) micromixer, secondary tree-shaped obstacle (STSO) micromixer, and tertiary tree-shaped obstacle (TTSO) micromixer are compared at five kinds of Reynolds (Res). The MEC of STSO micromixer and TTSO micromixer is higher than that of PTSO micromixer under different δ conditions. However, PTSO micromixer has higher mixing efficiency. Especially when δ = 45° and D = 0.5 mm, the mixing efficiency of PTSO micromixer reaches 95%. On the other hand, the convection phenomenon caused by PTSO causes the contact area of the two fluids to increase.



中文翻译:

基于分形原理和默里定律的树形障碍被动微混合器数值研究

摘要

本工作主要研究了基于分形原理和默里定律的树形障碍微混合器的混合效率和混合能量成本(MEC)。障碍物规则地排列在T型微通道的两侧。比较了初级树形障碍(PTSO)微混合器、二级树形障碍(STSO)微混合器和三级树形障碍(TTSO)微混合器在五种雷诺(Res)下的混合效率和MEC。在不同δ条件下,STSO微混合器和TTSO微混合器的MEC均高于PTSO微混合器。然而,PTSO微混合器具有更高的混合效率。特别是当δ  = 45° 和D = 0.5 mm,PTSO 微混合器的混合效率达到 95%。另一方面,PTSO 引起的对流现象导致两种流体的接触面积增加。

更新日期:2020-06-02
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