SEDIMENTATION OF A BIDISPERSE CLUSTER OF SOLID SPHERICAL PARTICLES

被引：0

作者：

Arkhipov, V. A. ^{[1
]}

Basalaev, S. A. ^{[2
]}

Zolotorev, N. N. ^{[2
]}

Perfil'eva, K. G. ^{[1
]}

机构：

[1] Tomsk State Univ, Res Inst Appl Math & Mech, Tomsk, Russia

[2] Tomsk State Univ, Res Inst Appl Math & Mech, Phys & Math, Tomsk, Russia

来源：

VESTNIK TOMSKOGO GOSUDARSTVENNOGO UNIVERSITETA-MATEMATIKA I MEKHANIKA-TOMSK STATE UNIVERSITY JOURNAL OF MATHEMATICS AND MECHANICS | 2020年 / 66期

基金：

俄罗斯科学基金会;

关键词：

bidisperse particle cluster; gravitational sedimentation; drag coefficient; experimental study; SYSTEM;

D O I：

10.17223/19988621/66/6

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A new method for the experimental study of gravitational sedimentation of a polydisperse cluster of solid spherical particles in a viscous fluid is presented. The method is based on the preliminary ultrasonic mixing of the particles in a spherical container and assumes the introduction of a spherical cluster of particles at a given concentration and zero initial velocity into a fluid. This method is used to determine sedimentation characteristics of a bidisperse cluster of particles (steel balls, 2 and 3 mm in diameter) in silicone oil. A qualitative pattern of the cluster evolution, a sedimentation rate, and a drag coefficient are obtained. A comparative analysis of sedimentation characteristics of monodisperse and bidisperse particle clusters is carried out in the range of Reynolds numbers Re = (0.30 divided by 0.66).10(-3). It is shown that, in contrast to a monodisperse cluster of particles, the drag coefficient of the bidisperse cluster of particles does not correspond to a correlation C-D = 24/Re-c for the Stokes sedimentation.

引用

页码：77 / 85

页数：9

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