On the settling behaviour of polydisperse particle clouds in viscous fluids

被引：14

作者：

Buelow, F. ^{[1
,2
]}

Nirschl, H. ^{[1
]}

Doefler, W. ^{[2
]}

机构：

[1] Karlsruhe Inst Technol, Inst Mech Proc Engn & Mech, D-76131 Karlsruhe, Germany

[2] Karlsruhe Inst Technol, Inst Appl & Numer Math, D-76131 Karlsruhe, Germany

来源：

EUROPEAN JOURNAL OF MECHANICS B-FLUIDS | 2015年 / 50卷

关键词：

Fluid mechanics; Particle; Polydisperse; Sedimentation; Simulation; Stokesian dynamics; SLOW MOTION; NUMBER; SIMULATION; SPHERES; RESISTANCE; CLUSTERS;

D O I：

10.1016/j.euromechflu.2014.11.003

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We investigate the behaviour of polydisperse particle clouds settling in a viscous fluid by means of numerical simulations. The sedimentation process is described on examples of bidisperse systems as well as fully polydisperse particle systems, pointing out parallels and differences to the monodisperse case. Based on our results we propose a simple formula which gives the maximum velocity of a polydisperse particle cloud settling in a viscous fluid. The proposed formula agrees with our numerical results even in case of systems with high polydispersity. (C) 2014 Elsevier Masson SAS. All rights reserved.

引用

页码：19 / 26

页数：8

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