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Issue
Korean Journal of Chemical Engineering,
Vol.26, No.4, 930-934, 2009
Stability of buoyancy-driven convection in directional solidification of a binary melt
Hwang IG, Choi CK
In directional solidification, compositional convection can be driven by an unstable density gradient in the melt. In this paper convective instabilities in liquid and mushy layers during solidification of a horizontal binary melt are analyzed by using the propagation theory. The self-similar stability equations are used to examine the boundarymode and mushy-layer-mode of convection. The effects of velocity conditions at the liquid-mush interface on the onset of convection are discussed. The critical Darcy-Rayleigh number for the convection in the mushy layer decreases with increasing the temperature of a cooled boundary.
Keywords: Directional Solidification; Buoyancy-driven Convection; Propagation Theory; Self-similar Stability Analysis
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[Cited By]
  1. Hwang IG, Korean Journal of Chemical Engineering, 30(5), 1023, 2013
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