Field induced rotational viscosity of ferrofluid: Effect of capillary size and magnetic field direction

被引：38

作者：

Andhariya, Nidhi ^{[1
]}

Chudasama, Bhupendra ^{[1
]}

Patel, Rajesh ^{[1
]}

Upadhyay, R. V. ^{[1
]}

Mehta, R. V. ^{[1
]}

机构：

[1] Bhavnagar Univ, Dept Phys, Bhavnagar 36402, Gujarat, India

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2008年 / 323卷 / 01期

关键词：

rotational viscosity; magnetic fluid; magnetophoretic mobility;

D O I：

10.1016/j.jcis.2008.04.018

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present investigation we report the effect of capillary diameter and the direction of applied magnetic field on the rotational viscosity of water and kerosene based ferrofluids. We found that changes in the field induced rotational viscosity are larger in the case of water based magnetic fluid than that of kerosene based fluid. The field induced rotational viscosity is found to be inversely proportional to the capillary diameter and it falls exponentially as a function of the angle between the direction of field and vorticity of flow. Magnetophoretic mobility and hydrodynamic volume fraction of nanomagnetic particles are determined for above cases. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：153 / 157

页数：5

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