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Thermal convection thresholds in viscoelastic solutions

By Javier Martinez-Mardones, R. Tiemann and Daniel Walgraef

Abstract

The threshold for oscillatory convection in Rayleigh-Benard experiments with viscoelastic binary fluids is explicitly determined as a function of separation ratio and rheological parameters. In particular, it is shown that the critical oscillation frequency may differ by several orders of magnitude on varying separation ratio and Deborah number. The results suggest that binary fluid aspects may not be discarded when studying thermal convection in polymeric solutions. (C) 2000 Elsevier Science B.V. All rights reserved.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Topics: Physique de l'état condense [supraconducteur], Physique de l'état condense [struct. propr. thermiques, etc.], Physique de l'état condense [struct. électronique, etc.], Mathématiques, Mécanique sectorielle, Génie chimique, Métallurgie et mines, Critical oscillation frequency, Thermal convection, Viscoelastic fluid
Publisher: 'Elsevier BV'
Year: 2000
DOI identifier: 10.1016/S0377-0257(00)00098-7
OAI identifier: oai:dipot.ulb.ac.be:2013/164004
Provided by: DI-fusion
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