Chaotic advection induced by a magnetic chain in a rotating magnetic field

T.G. Kang, M.A. Hulsen, P.D. Anderson, J.M.J. den Toonder, H.E.H. Meijer

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

We investigated chaotic advection induced by a magnetic chain in a two-dimensional circular cavity under the influence of a rotating magnetic field. Our focus is on the dynamics of the chain and the route to induce chaotic mixing. A direct simulation method based on the Maxwell stress tensor and a fictitious domain method is employed to solve magnetic and flow problems in a coupled manner. The motion of the chain is significantly affected by the Mason number, the ratio of viscous force to magnetic force. At a lower Mason number, the chain rotates like a rigid body following the field. Alternating break-up and reformation of the chain are observed within a limited range of the Mason number, which induce two typical flows: a single rotating flow and two co-rotating flows. From a series of deformation patterns of a blob, we found that the two alternating flows result in enhanced mixing, showing an exponential increase of the interfacial length.
Original languageEnglish
Title of host publication2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings
PublisherCRC Press
Pages276-279
Number of pages4
Volume3
ISBN (Print)978-1-4200-6184-0
Publication statusPublished - 23 Aug 2007
Event2007 NSTI Nanotechnology Conference and Trade Show (NSTI Nanotech 2007) - Santa Clara, United States
Duration: 20 May 200724 May 2007

Conference

Conference2007 NSTI Nanotechnology Conference and Trade Show (NSTI Nanotech 2007)
Abbreviated titleNSTI Nanotech 2007
Country/TerritoryUnited States
CitySanta Clara
Period20/05/0724/05/07

Keywords

  • Fictitious domain method
  • Haotic advection
  • Magnetic chain
  • Maxwell stress tensor
  • Rotating magnetic field

Fingerprint

Dive into the research topics of 'Chaotic advection induced by a magnetic chain in a rotating magnetic field'. Together they form a unique fingerprint.

Cite this