Natural convection in a liquid-encapsulated molten semiconductor with a steady magnetic field

Jonathan F. Kuniholm, Nancy Ma

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

This paper treats the buoyant convection in a layer of boron oxide, called a liquid encapsulant, which lies above a layer of a molten compound semiconductor (melt) between cold and hot vertical walls in a rectangular container with a steady horizontal magnetic field B. The magnetic field provides an electromagnetic damping of the molten semiconductor which is an excellent electrical conductor but has no direct effect on the motion of the liquid encapsulant. The temperature gradient drives counterclockwise circulations in both the melt and encapsulant. These circulations alone would lead to positive and negative values of the horizontal velocity in the encapsulant and melt, respectively, near the interface. The competition between the two buoyant convections determines the direction of the horizontal velocity of the interface.

Original languageEnglish
Pages (from-to)130-136
Number of pages7
JournalInternational Journal of Heat and Fluid Flow
Volume24
Issue number1
DOIs
StatePublished - Feb 2003
Externally publishedYes

Funding

This research was supported by the National Aeronautics and Space Administration under grant NAG8-1817. The calculations were performed on the IBM SP at the North Carolina Supercomputing Center in Research Triangle Park, NC.

FundersFunder number
National Aeronautics and Space AdministrationNAG8-1817

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