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physics.flu-dyn2012★ 18 cited
Nonlinear mushy-layer convection with chimneys: stability and optimal solute fluxes
Andrew J. Wells, John S. Wettlaufer, Steven A. Orszag
We model buoyancy-driven convection with chimneys -- channels of zero solid fraction -- in a mushy layer formed during directional solidification of a binary alloy in two-dimension…
physics.flu-dyn2010
Optimal and hysteretic fluxes in alloy solidification: Variational principles and chimney spacing
Andrew J. Wells, J. S. Wettlaufer, Steven A. Orszag
We take a numerical approach to analyze the mechanisms controlling the spacing of chimneys -- channels devoid of solid -- in two-dimensional mushy layers formed by solidifying a bi…