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Frequency dependence of an alternating magnetic field driven flow

A. Cramer , V. Galindo , M. Zennaro

Helmholtz--Zentrum Dresden--Rossendorf, Institute of Fluid Dynamics, P.O. Box~510119, 01314~Dresden, Germany }{ Università degli Studi di Padova, Department of Industrial Engineering, Via Gradenigo 6/A, 35131 Padua, Italy

Abstract
The flow induced by a single-phase alternating magnetic field (AMF) is studied mainly numerically and by two preliminary experiments of quite different size. For validation, the well known dependence of the characteristic velocity vc on magnetic induction B is reproduced experimentally and in the simulations. It is shown that the flow structure depends drastically on the frequency f of the AMF. An investigation of the change of vc with f results in a quantitative difference of flows in an AMF compared to rotating and travelling magnetic fields. Figs 11, Refs 26.

Magnetohydrodynamics 51, No. 1, 133-148, 2015 [PDF, 2.39 Mb]

Copyright: Institute of Physics, University of Latvia
Electronic edition ISSN 1574-0579
Printed edition ISSN 0024-998X
DOI: http://doi.org/10.22364/mhd