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Tranvel Instabilities in Lateral Heating
Authors: Pelacho, M.A. (M.A.)
Garcimartin, A. (Ángel)
Burguete, J. (J.)
Keywords: Materias Investigacion::Física
Issue Date: 2001
Citation: Int. J. of Bif. and Chaos, 11, pp. 2881-2886
We study the convective motion forced by lateral heating on a liquid layer. The movement is caused by two forces: buoyancy and thermocapillarity on the free surface, which is open to the air. As soon as a temperature gradient is imposed along the liquid layer, the fluid begins to move. When a certain threshold of the temperature di erence is attained, this flow destabilizes and oscillations appear. We have performed an experiment to characterize the thermocapillary waves in a rectangular container whose dimensions can be continuously changed. This way, we are able to investigate how boundaries a ect the threshold for the instability, as well as their consequences on other features of the waves.
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