Colloidal mushy layers
نویسندگان
چکیده
منابع مشابه
Convection in Mushy Layers
As a molten alloy or any multi-component liquid is cooled and solidified the growing solid phase usually forms a porous matrix through which the residual liquid can flow. The reactive two-phase medium comprising the solid matrix and residual liquid is called a mushy layer. Buoyancy forces, owing primarily to compositional depletion as one or more of the components of the alloy are extracted to ...
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A subtle issue in the study of mushy zones which form during the solidification of binary alloys is that there are two distinct types of solid-mush interfaces which may occur. One of these is a eutectic front and the other is a front which separates the mushy layer and, assuming complete solute rejection, a layer of a pure solid. For semi-infinite domain configurations that admit similarity sol...
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We study the problem of nonlinear development of oscillatory convective instability in a two-dimensional mushy layer during solidification of a binary mixture. We adopt the near-eutectic limit, making the problem analytically tractable using standard perturbation techniques. We consider also a distinguished limit of large Stefan number, which allows a destabilization of the system to an oscilla...
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متن کاملShear flow, phase change and matched asymptotic expansions: Pattern formation in mushy layers
In many scientific and engineering problems the solidification of an alloy leads to a highly convoluted crystalline matrix modeled as a thermodynamically controlled reactive porous medium called a mushy layer. We analyze the interaction of an external shear flow with a solidifying mushy layer through a corrugated mush–liquid interface. We find that the external flow can drive forced convective ...
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2021
ISSN: 0022-1120,1469-7645
DOI: 10.1017/jfm.2020.863