Melting of a vertical ice block in a cavity filled with an aqueous solution is studied experimentally. Local interfacial temperatures and front velocities are measured allowing for a quantitative study of the coupling of the fluid motion, thermal equilibrium and the local heat transfers at the melting front. It is found that the front equilibrium shift is correlated to the classical parameter of the phase change process, that is the Stefan number, while the local heat transfer at the interface is correlated to the parameters characterizing thermosolutal natural convection. Quantitative results about the time evolution of the double-diffusive multi-layers structure in the fluid phase are obtained. The formation of the first thermosolutal layer is analyzed with the help of numerical simulations. It is found that the mechanism responsible for the onset of this layer is due to a well known double-diffusive instability.
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Ice Block Melting Into a Binary Solution: Coupling of the Interfacial Equilibrium and the Flow Structures
Sophie Mergui,
e-mail: mergui@fast.u-psud.fr
Sophie Mergui
FAST-UMR CNRS 7608 (Universities Paris VI and Paris XI), Campus Universitaire-Ba^timent 502, 91405 Orsay Cedex, France
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Sandrine Geoffroy,
Sandrine Geoffroy
FAST-UMR CNRS 7608 (Universities Paris VI and Paris XI), Campus Universitaire-Ba^timent 502, 91405 Orsay Cedex, France
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Christine Be´nard
Christine Be´nard
FAST-UMR CNRS 7608 (Universities Paris VI and Paris XI), Campus Universitaire-Ba^timent 502, 91405 Orsay Cedex, France
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Sophie Mergui
FAST-UMR CNRS 7608 (Universities Paris VI and Paris XI), Campus Universitaire-Ba^timent 502, 91405 Orsay Cedex, France
e-mail: mergui@fast.u-psud.fr
Sandrine Geoffroy
FAST-UMR CNRS 7608 (Universities Paris VI and Paris XI), Campus Universitaire-Ba^timent 502, 91405 Orsay Cedex, France
Christine Be´nard
FAST-UMR CNRS 7608 (Universities Paris VI and Paris XI), Campus Universitaire-Ba^timent 502, 91405 Orsay Cedex, France
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division July 10, 2001; revision received May 6, 2002. Associate Editor: B. T. F. Chung.
J. Heat Transfer. Dec 2002, 124(6): 1147-1157 (11 pages)
Published Online: December 3, 2002
Article history
Received:
July 10, 2001
Revised:
May 6, 2002
Online:
December 3, 2002
Citation
Mergui, S., Geoffroy , S., and Be´nard, C. (December 3, 2002). "Ice Block Melting Into a Binary Solution: Coupling of the Interfacial Equilibrium and the Flow Structures ." ASME. J. Heat Transfer. December 2002; 124(6): 1147–1157. https://doi.org/10.1115/1.1513572
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