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Flow-induced morphological instability of a mushy layer

A morphological instability of a mushy layer due to a forced flow in the melt is analysed. The instability is caused by flow induced in the mushy layer by Bernoulli suction at the crests of a sinusoidally perturbed mush-melt interface. The flow in the mushy layer advects heat away from crests which... Full description

Contained in: Journal of Fluid Mechanics Vol. 391 (1999), p. 337-357
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Links: Additional Link (dx.doi.org)
ISSN: 1469-7645
Additional Keywords: DISPERSES-SYSTEM
EISBILDUNG
ERSTARREN
ERZWUNGENE-STROEMUNG
MEERESOBERFLAECHE
SCHERSTROEMUNG
STATIONAERE-STROEMUNG
STROEMUNGSINSTABILITAET
ZWEIPHASENSTROEMUNG
DOI: 10.1017/S002211209900539X
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 21 Seiten, 23 Quellen
ID (e.g. DOI, URN): 10.1017/S002211209900539X
PPN (Catalogue-ID): WTI035586028
Note: WTI TEMA DB
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520 |a A morphological instability of a mushy layer due to a forced flow in the melt is analysed. The instability is caused by flow induced in the mushy layer by Bernoulli suction at the crests of a sinusoidally perturbed mush-melt interface. The flow in the mushy layer advects heat away from crests which promotes solidification. Two linear stability analyses are presented: the fundamental mechanism for instability is elucidated by considering the case of uniform flow of an inviscid melt; a more complete analysis is then presented for the case of a parallel shear flow of a viscous melt. The novel instability mechanism we analyse here is contrasted with that investigated by Gilpin et al. (1980) and is found to be more potent for the case of newly forming sea ice. 
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