Experimental study on laminar mixing in planetary mixer

Experimental study on laminar mixing in planetary mixer
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行星搅拌机层流混合实验研究

DOI:
10.1007/s00348-021-03146-2
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发表时间:
2021
影响因子:
2.4
通讯作者:
Fujisawa N.
Fujisawa N.
中科院分区:
工程技术3区
文献类型:
--
作者:
Yamagata T.;Sugisawa H.;Fujisawa N.

文献摘要

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采用三种不同的流动测量技术,即颗粒分散测量混合、颗粒图像测速(PIV)测量截面速度和立体成像三维轨迹观测,对圆柱形容器行星式混合器中的层流混合机理进行了实验研究。这些可视化研究表明,在一定范围内的旋进率(旋转与旋转的比率)的层流混合性能得到改善,而三维流动结构促进了容器中的层流混合。此外,有人发现,三维示踪剂的轨迹高度波动的圆柱形容器中的最佳进动率。这是由于在圆柱形容器中由于进动的影响而发生了混沌平流。该结果得到了文献报道的行星式混合器层流混合数值模拟的支持。图形摘要
The mechanism of laminar mixing in a planetary mixer of cylindrical container in precession was studied experimentally using three different types of flow measurement techniques, the measurement of mixing from particle dispersion, cross-sectional velocity measurement by particle image velocimetry (PIV), and the three-dimensional trajectory observation by stereo imaging. These visualization studies reveal that the laminar mixing performance was improved in a certain range of precession rate (the ratio of revolution to rotation), whereas the three-dimensional flow structure promoted the laminar mixing in the container. Furthermore, it was found that the three-dimensional tracer trajectory highly fluctuated in the cylindrical container at the optimum precession rate. This was caused by the occurrence of chaotic advection in the cylindrical container by the influence of precession. The results were supported by the numerical simulations of laminar mixing in the planetary mixer reported in the literature.Graphical abstract
多腔流中的层流混合和混沌混合
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