Main Page
About the Journal
Subscription information

Current Issue
Tables of Contents
Author Index


The influence of magnetic field on free surface ferrofluid flow

M. Habera1, 2 - M. Fabian1, 3 - M. Šviková1 - M. Timko4

1 High School of St. Thomas Aquinas, Zbrojniċná 3, 04001 Košice, Slovakia
2 Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 12116 Praha, Czech Rebuplic
3 Faculty of Mechanical Engineering, Technical University of Košice, Letná 9, 04200 Košice, Slovakia
4 Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia

This paper experimentally investigates the influence of magnetic field on the breakup of ferrofluid flow. In a dripping regime, with the increasing parallel magnetic field strength, the drop elongation coefficient increases, while the drop volume decreases. A simple quasi-static model is suggested for interpretation of the droplet volume decrease. The shape is discussed using a theory based on minimizing the sum of surface and magnetic energy of the ellipsoidal drop. At a little bit larger velocity at the nozzle, applying a magnetic field induces dripping to jetting transition, while in a jetting regime significantly smaller drops arise. Figs 7, Refs 7.

Magnetohydrodynamics 49, No. 3/4, 402-406, 2013 [PDF, 0.83 Mb]

Copyright: Institute of Physics, University of Latvia
Electronic edition ISSN 1574-0579
Printed edition ISSN 0024-998X