ARTICLE:

• FINITE ELEMENT MODELLING OF INCOMPRESSIBLE THERMO-CONVECTIVE FLOWS  download article

P. Arlabosse
IUSTI, University of Provence, 13397 Marseille Cedex 20, France

Marc Medale
IUSTI - CNRS UMR 6595, Polytech'Marseille, Technopôle de Château-Gombert, 5 rue, Enrico Fermi, 13453, Marseille, France

M. Jaeger
IUSTI, University of Provence, 13397 Marseille Cedex 20, France

R. Martin
IUSTI, University of Provence, 13397 Marseille Cedex 20, France

ABSTRACT

Thermocapillary flow induced by a gas bubble in a silicone oil layer submitted to a vertical temperature gradient is investigated numerically. A bidimensional model based on finite element method has been developped. It enables simulations of laminar flows induced by a surface tension gradient. Different configurations are selected: Marangoni convection acting alone, natural convection type Rayleigh Benard, Marangoni convection acting against gravity... The velocity and temperature fields are computed in a vertical cross section. The combined effects of gravity and thermocapillarity are studied. Numerical results are compared with experimental measurements obtained in a previous experiment.

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