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

Autor(en)

Daniel Lüsebrink, Joan J. Cerdà, Pedro A. Sánchez, Sofia Kantorovich, Tomás Sintes

Abstrakt

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.

Organisation(en)

Computergestützte Physik und Physik der Weichen Materie

Externe Organisation(en)

University of the Balearic Islands, University of British Columbia (UBC)

Journal

Journal of Chemical Physics

Band

145

Anzahl der Seiten

12

ISSN

0021-9606

DOI

https://doi.org/10.1063/1.4971860

Publikationsdatum

2016

Peer-reviewed

Ja

ÖFOS 2012

103015 Kondensierte Materie, 103032 Strömungslehre, 103006 Chemische Physik

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie, Physical and Theoretical Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/f5bdec5e-d19f-4360-8459-74f265648361