Oscillations and chaos on the free surface of a heated fluid

Year: 1984

Authors: Arecchi F.T., Ciliberto S., Rubio M.A.

Autors Affiliation: Istituto Nazionale di Ottica, Firenze, Italia;
Physics Department, University of Florence, Florence, Italy;
Departamento de Física Fundamental, U.N.E.D., Madrid

Abstract: We report the observation of oscillatory and chaotic instabilities on a fluid layer with a free surface, heated from below. The system is driven in a bidimensional state by a spatial modulation of the heat flux on the free surface. For increasing temperature gradients the system yields oscillations periodic in time, initially at a frequency of 8 mHz, then with a second frequency lower by a ratio 30 and eventually with an aperiodic behaviour corresponding to the onset of turbulent regime. The oscillatory regions are localized in space.

Journal/Review: NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS

Volume: 3 (4)      Pages from: 793  to: 802

KeyWords: turbulent flows; convection and heat transfer;
DOI: 10.1007/BF02457534

Citations: 4
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