The behavior of a magnetic filament in flow under the influence of an external magnetic field

被引：11

作者：

Lusebrink, Daniel ^{[1
,3
,4
]}

Cerda, Joan J. ^{[1
]}

Sanchez, Pedro A. ^{[2
]}

Kantorovich, Sofia S. ^{[2
,5
]}

Sintes, Tomas ^{[1
]}

机构：

[1] IFISC UIB CSIC Inst Fis Interdisciplinar & Sistem, Campus UIB, Palma De Mallorca 07122, Spain

[2] Univ Wien, Fac Phys, Boltzmanngasse 5, A-1090 Vienna, Austria

[3] Max Planck Inst Phys Komplexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany

[4] Univ British Columbia, UCB Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada

[5] Ural Fed Univ, Lenin Ave 51, Ekaterinburg 620000, Russia

来源：

JOURNAL OF CHEMICAL PHYSICS | 2016年 / 145卷 / 23期

基金：

欧盟地平线“2020”;

关键词：

POLYMER-SOLUTIONS; DYNAMICS; CHAINS; NANOPARTICLES; SIMULATION; EQUILIBRIUM; MIGRATION; COLLOIDS; BRUSHES;

D O I：

10.1063/1.4971860

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：

We present an extensive numerical study of the behaviour of a filament made of ferromagnetic colloidal particles subjected to the simultaneous action of a fluid flow and a stationary external magnetic field perpendicular to the flow lines. We found that in the presence of a shear flow, the tumbling motion observed at zero field is strongly inhibited when the external magnetic field is applied. The field is able to stabilise the filament with a well defined degree of alignment that depends on the balance between hydrodynamic and magnetic torques. In addition, for a Poiseuille flow, it has been found that the initial position has a long lasting influence on the behaviour of the magnetic filament when the external field is applied. Published by AIP Publishing.

引用

页数：12

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