NDLI: Numerical investigation of the dynamics of Janus magnetic particles in a rotating magnetic field

Content Provider	Springer Nature Link
Author	Kim, Hui Eun Kim, Kyoungbeom Ma, Tae Yeong Kang, Tae Gon
Copyright Year	2017
Abstract	We investigated the rotational dynamics of Janus magnetic particles suspended in a viscous liquid, in the presence of an externally applied rotating magnetic field. A previously developed two-dimensional direct simulation method, based on the finite element method and a fictitious domain method, is employed to solve the magnetic particulate flow. As for the magnetic problem, the two Maxwell equations are converted to a differential equation using the magnetic potential. The magnetic forces acting on the particles are treated by a Maxwell stress tensor formulation, enabling us to consider the magnetic interactions among the particles without any approximation. The dynamics of a single particle in the rotating field is studied to elucidate the effect of the Mason number and the magnetic susceptibility on the particle motions. Then, we extended our interest to a two-particle problem, focusing on the effect of the initial configuration of the particles on the particle motions. In three-particle interaction problems, the particle dynamics and the fluid flow induced by the particle motions are significantly affected by the particle configuration and the orientation of each particle.
Starting Page	17
Ending Page	27
Page Count	11
File Format	PDF
ISSN	1226119X
Journal	Korea-Australia Rheology Journal
Volume Number	29
Issue Number	1
e-ISSN	20937660
Language	English
Publisher	Korean Society of Rheology, Australian Society of Rheology
Publisher Date	2017-03-01
Publisher Place	Seoul, Melbourne
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Janus magnetic particle magnetic interaction numerical simulation rotating magnetic field Characterization and Evaluation of Materials Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Mechanical Engineering Food Science
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science

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