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Macroscopic and microscopic hydrodynamic mixing of stratified suspensions
| Title: | Macroscopic and microscopic hydrodynamic mixing of stratified suspensions |
| Authors: | Yamamoto, Yasufumi Browse this author | | Yamada, Koki Browse this author | | Tanaka, Yohsuke Browse this author | | Harada, Shusaku Browse this author →KAKEN DB |
| Issue Date: | 27-Aug-2021 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review E |
| Volume: | 104 |
| Issue: | 2 |
| Start Page: | 025111 |
| Publisher DOI: | 10.1103/PhysRevE.104.025111 |
| Abstract: | We conducted numerical experiments to investigate the mixing of stratified suspensions containing different types of particles. We used a point-force two-way coupling method. We studied the mixing behavior of stratified suspensions and we discovered two types of mixing: microscopic (individual-particle-level) and macroscopic (vessel-scale) collective mixing. In addition, we examined the vertical mixing speed of the stratified suspension. We used a simple theoretical model to analyze the fingering settling velocity. Then we introduced a nondimensional number representing the difference in collectivities of the upper and lower suspensions while accounting for particle terminal velocities. We discovered that the proposed nondimensional parameter has a negative sign that distinguishes the mixing form of only microscopic individual-particle-level mixing and a positive value that predicts the speed of macroscopic collective mixing of stratified suspensions. |
| Rights: | Copyright (2021) by The American Physical Society. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/82805 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 原田 周作
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