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Título

Pattern formation in solutal convection: vermiculated rolls and isolated cells

AutorCartwright, Julyan H. E.; Piro, Oreste ; Villacampa, Ana I.
Palabras claveIsolated cells
Pattern formation
Solutal convection
Tia Maria instability
Vermiculated rolls
[PACS] Convection and heat transfer
[PACS] Pattern selection; pattern formation
[PACS] Complex systems: patterns
Fecha de publicación14-jul-2002
EditorElsevier
CitaciónPhysica A 314(1-4): 291-298 (2002)
ResumenObservations of the peculiar behaviour of a drink of liqueur topped with cream led us to perform experiments showing that the instability is a convection phenomenon that arises through destabilizing surface-tension forces. The convection is solutal: driven by gradients of concentration of a solute, rather than by heat gradients as in the more commonly studied thermal convection. The convective patterns, vermiculated rolls and isolated cells, are quite unlike the usual planforms. They are associated with an elastic surface film, and the Marangoni number is high, characteristic of solutal convection. We have conducted further experiments that reproduce these patterns in simpler working fluids.
Descripción8 pages, 3 figures.-- PACS nrs.: 47.27.Te; 47.54.+r; 89.75.Kd.-- Printed version published Nov 1, 2002.
Versión del editorhttp://dx.doi.org/10.1016/S0378-4371(02)01080-4
URIhttp://hdl.handle.net/10261/15340
DOI10.1016/S0378-4371(02)01080-4
ISSN0378-4371
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