Sedimentation of a rotating sphere in a power-law fluid

被引：6

作者：

Godinez, Francisco A. ^{[1
]}

de la Calleja, Elsa ^{[2
]}

Lauga, Eric ^{[3
]}

Zenit, Roberto ^{[2
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Ingn, Mexico City 04510, DF, Mexico

[2] Univ Nacl Autonoma Mexico, Inst Invest & Mat, Mexico City 04510, DF, Mexico

[3] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England

来源：

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | 2014年 / 213卷

基金：

美国国家科学基金会;

关键词：

Sedimenting sphere; Power-law fluid; Inelastic fluid; Rheological properties; Superposition; FLOW; VISCOMETER;

D O I：

10.1016/j.jnnfm.2014.08.013

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We measure the sedimenting velocity of rigid spheres in power-law fluids. By imposing a controlled rotation, we can increase the typical shear rate in the surrounding fluid leading to a decrease of the effective fluid viscosity and, consequently, an increase of the sedimentation speed of the spheres. By fitting our experimental measurements to a power-law dependence of the sedimentation speed on the rotation frequency we are able to predict the values of the consistency and power indices for the test fluids. This setup could thus be used as a rheometer for power-law fluids. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：27 / 30

页数：4

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[1] THE DRAG ON A SPHERE IN A POWER-LAW FLUID
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[6] TOMITA SOLUTION FOR THE MOTION OF A SPHERE IN A POWER-LAW FLUID
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ARTERBURN, DR
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[7] CREEPING FLOW OF POWER-LAW FLUID OVER NEWTONIAN FLUID SPHERE
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[9] A POWER-LAW FLUID-FLOW PAST A POROUS SPHERE
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