2024-03-28T09:01:35Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/153402020-04-25T13:09:21Zcom_10261_2855com_10261_4com_10261_91com_10261_8col_10261_2857col_10261_344
DIGITAL.CSIC
author
Cartwright, Julyan H. E.
author
Piro, Oreste
author
Villacampa, Ana I.
2009-07-24T11:32:53Z
2009-07-24T11:32:53Z
2002-07-14
Physica A 314(1-4): 291-298 (2002)
0378-4371
http://hdl.handle.net/10261/15340
10.1016/S0378-4371(02)01080-4
Observations 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.
eng
closedAccess
Isolated cells
Pattern formation
Solutal convection
Tia Maria instability
Vermiculated rolls
[PACS] Convection and heat transfer
[PACS] Pattern selection; pattern formation
[PACS] Complex systems: Patterns
Pattern formation in solutal convection: vermiculated rolls and isolated cells
artÃculo
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