Collective Oscillating Mode in a One-Dimensional Chain of Convective Rolls

M M Dubois (1) , R da Silva (1) , François Daviaud (1) , P Bergé (1) , A Petrov (1)

1 SPEC - UMR3680 - Service de physique de l'état condensé

Experiments of Rayleigh-Bénard convection in intermediate geometries show that very small wavelengths can be stabilized at very high values of the Rayleigh number when the fluid layer is quasi one-dimensional. A new collective oscillating instability is then observed; this instability may be a first step toward spatio-temporal chaos.

Domaines: Physique [physics]

M M Dubois, R da Silva, François Daviaud, P Bergé, A Petrov. Collective Oscillating Mode in a One-Dimensional Chain of Convective Rolls. EPL - Europhysics Letters, 1989, 8 (2), pp.135-139. ⟨cea-01374052⟩