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Proceedings Paper

Use of traveling magnetic fields to control melt convection
Author(s): Narayanan Ramachandran; Konstantin Mazuruk; Martin P. Volz
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Paper Abstract

An axially traveling magnetic wave can be used to induce a meridional base flow in a cylindrical zone of an electrically conducting liquid, such as a crystal growth melt. This flow generated non-intrusively can be conveniently controlled, in magnitude and direction, to derive potential benefits for crystal growth applications. In particular, it can be used to effectively stir the melt in long cylindrical columns. It can be used to modify the species concentration field and the thermal field in the melt and to also affect the interface shape of the growing crystal. The basic theory of such an application is developed and preliminary data from a model fluids experiment, using a mercury column, are presented.

Paper Details

Date Published: 6 July 1999
PDF: 9 pages
Proc. SPIE 3792, Materials Research in Low Gravity II, (6 July 1999); doi: 10.1117/12.351298
Show Author Affiliations
Narayanan Ramachandran, Universities' Space Research Association/NASA Marshall Space Flight Ctr. (United States)
Konstantin Mazuruk, Universities' Space Research Association/NASA Marshall Space Flight Ctr. (United States)
Martin P. Volz, NASA Marshall Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 3792:
Materials Research in Low Gravity II
Narayanan Ramachandran, Editor(s)

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