Steady-state mushy layers: experiments and theory.

Peppin, S. S. L. and Aussillous, P. and Huppert, H. E. and Worster, M. G. (2007) Steady-state mushy layers: experiments and theory. Journal of Fluid Mechanics, 570. pp. 69-78. DOI https://doi.org/10.1017/S0022112006003028

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Abstract

A new facility has been developed to investigate the directional solidification of transparent aqueous solutions forming mushy layers in a quasi-two-dimensional system. Experiments have been conducted on NaCl–H2O solutions by translating a Hele-Shaw cell at prescribed rates between fixed heat exchangers providing a temperature gradient of approximately 1 ◦Cmm−1. The mush–liquid interface remained planar at all freezing velocities larger than 8 μms−1, while steepling occurred at lower velocities. No significant undercooling of the mush–liquid interface was detected at freezing velocities up to 12 μms−1. Mathematical predictions of the steadystate temperature profile and mushy-layer thickness as functions of freezing rate are in excellent agreement with experimental measurements.

Item Type: Article
Uncontrolled Keywords: 2007 AREP 2007 P IA53
Divisions: 02 - Geodynamics, Geophysics and Tectonics
Journal or Publication Title: Journal of Fluid Mechanics
Volume: 570
Page Range: pp. 69-78
Identification Number: https://doi.org/10.1017/S0022112006003028
Depositing User: Sarah Humbert
Date Deposited: 16 Feb 2009 13:03
Last Modified: 23 Jul 2013 10:08
URI: http://eprints.esc.cam.ac.uk/id/eprint/586

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