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Symmetric and Asymmetric Convective Oscillations in a Multilayer System

par Simanovskii, Ilya ;Viviani, Antonio;Dubois, Frank ;Legros, Jean Claude
Référence Microgravity, science and technology, 22, 3, page (257-263)
Publication Publié, 2010

Article révisé par les pairs

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Résumé :

The nonlinear development of oscillatory instability under the joint action of buoyant and thermocapillary effects in a multilayer system, is investigated. The nonlinear convective regimes are studied by the finite difference method. The rigid heat-insulated lateral walls, are considered. Transitions between the motions with different spatial structures are investigated. Specific types of flows, symmetric and asymmetric oscillations, have been found. It is shown that the oscillatory motion takes place in an interval of the Grashof number values bounded both from below-by the mechanical equilibrium, and from above-by the steady state. © Springer Science+Business Media B.V. 2010.