Shape transformations in rotating ferrofluid drops
Pattern Formation and Solitons
2009-11-07 v1 Materials Science
Fluid Dynamics
Abstract
Floating drops of magnetic fluid can be brought into rotation by applying a rotating magnetic field. We report theoretical and experimental results on the transition from a spheroid equilibrium shape to non-axissymmetrical three-axes ellipsoids at certain values of the external field strength. The transitions are continuous for small values of the magnetic susceptibility and show hysteresis for larger ones. In the non-axissymmetric shape the rotational motion of the drop consists of a vortical flow inside the drop combined with a slow rotation of the shape. Nonlinear magnetization laws are crucial to obtain quantitative agreement between theory and experiment.
Cite
@article{arxiv.nlin/0111054,
title = {Shape transformations in rotating ferrofluid drops},
author = {K. I. Morozov and A. Engel and A. V. Lebedev},
journal= {arXiv preprint arXiv:nlin/0111054},
year = {2009}
}
Comments
4 pages, 3 figures