Oscillatory Rayleigh-Marangoni convection in a layer heated from above: numerical simulations with an undeformable

¹Laboratoire de Modélisation en Mécanique, Université Pierre et Marie Curie (Paris VI), 8 rue du Capitaine Scott, 75015 Paris, France.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|March 15, 2003

Abstract:

Joint action of buoyancy and thermocapillary forces can destabilize the motionless state in a liquid layer heated from above due to the coupling of internal and surface waves. The nonlinear evolution of this oscillatory instability is studied using three-dimensional direct numerical simulations with a pseudospectral Fourier-Chebyshev code. Alternating rolls and standing, oscillating squares are observed as final convective patterns. The flow is strongly localized near the free surface. Buoyancy plays a negligible role in kinetic energy production.

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Oscillatory Rayleigh-Marangoni convection in a layer heated from above: numerical simulations with an undeformable...

Abstract:

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Oscillatory Rayleigh-Marangoni convection in a layer heated from above: numerical simulations with an undeformable