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Up to the unsteadiness of axisymmetric thermocapillary flows in a laterally heated liquid bridge (2000)

Kasperski, G. ; Batoul, A. ; Labrosse, G.

[S.l.] : American Institute of Physics (AIP)

Physics of Fluids 12 (2000), S. 103-119

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Details

ISSN: 1089-7666

Quelle: AIP Digital Archive

Thema: Physik

Notizen: Axisymmetric flows of fluids of various Prandtl numbers, Pr, in a cylindrical and undeformable liquid bridge submitted to a lateral heating are studied in a zero gravity environment, up to their transitions to unsteadiness. The governing equations are solved numerically by a pseudospectral scheme. The results depend on Pr, in a nonmonotonic fashion, as, for instance, the threshold of the onset to unsteadiness. It has always been reached, except for our Pr=1 experiment, run up to a Marangoni number value Ma=106. The steady flows at very high Reynolds numbers (up to 107) offer a rich structure. A first incursion into unsteadiness shows different flow structure evolutions, depending on whether Pr is smaller or larger than one. © 2000 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.870286

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