Electronic edition ISSN 1574-0579

Flow driven by Marangoni convection and rotating magnetic field in a floating-zone configuration

L. Martin Witkowski , J. S. Walker

Department of Mechanical and Industrial Engineering, University of Illinois, 1206 W. Green St., Urbana, IL 61801, USA

Abstract
This paper treats the axisymmetric flow driven by Marangoni convection and a Rotating Magnetic Field (RMF) in a Floating-Zone configuration. For a low Prandtl number liquid, and different Marangoni values, we investigate the evolution of the flow as the intensity of the RMF is increased. It evolves from a Marangoni dominated flow to a RMF dominated flow. We particularly emphasise and explain the transition region where both sources of motion surprisingly tend to cancel each other. Figs 3, Refs 10.