Coriolis effects on the stability of plane-front solidification of dilute Pb-Sn binary alloys

Alparslan Oztekin, Arne J Pearlstein

Research output: Contribution to journalArticle

Abstract

The possibility of using steady uniform rotation about a vertical axis to suppress the onset of buoyancy-driven convection during solidification of a binary alloy is considered using a linear stability analysis. For Pb-Sn alloys, our results clearly show that the onset of convection in a horizontally unbounded layer can be suppressed significantly at modest rotation rates. Specifically, "plane-front" solidification is linearly stable at higher Sn concentrations in a rotating configuration than in a nonrotating one. The predicted inhibitory effects of rotation on convection are discussed in terms of previous experimental and theoretical studies of the effect of rotation on the onset of buoyancy-driven convection in single-component fluids heated from below and in binary fluids subject to thermal and solutal stratification.

Original languageEnglish (US)
Pages (from-to)73-80
Number of pages8
JournalMetallurgical Transactions B
Volume23
Issue number1
DOIs
StatePublished - Jan 1 1992

ASJC Scopus subject areas

  • Engineering(all)

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