Competition between Different Symmetries in Convective Patterns

Year: 1988

Authors: Ciliberto S., Pampaloni E., Perez-Garcia C.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Departament de Fisica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Catalonia, Spain

Abstract: The transition between hexagons and rolls in convective patterns has been studied in pure water under non-Boussinesq conditions. The transition is characterized qualitatively by shadowgraph images and quantitatively by heat-flow measurements and a local technique based on the deflections of a laser beam. We also show that with this local technique one can recover global quantities such as the convective heat flow.


Volume: 61 (10)      Pages from: 1198  to: 1201

KeyWords: convective patterns
DOI: 10.1103/PhysRevLett.61.1198

Citations: 74
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