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Numerical simulations of Rayleigh-Benard systems with non-homogeneous temperature sources

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In this work we present a study of 2D thermal Rayleigh-Benard systems with non-homogeneous boundary conditions. For this kind of system we investigated the static solution and the transition to bulk convection using both an analitical and a numerical approach. Results from numerical simulations are presented to show the behavior under fully turbulent conditions. The effect of strength of the forcing and the size of the inhomogeneity elements, varied between experiments, is determined.

Author(s):

Patrizio Ripesi    
University of Rome Tor Vergata
Italy

Luca Biferale    
University of Rome Tor Vergata
Italy

Mauro Sbragaglia    
University of Rome Tor Vergata
Italy

Achim Wirth    
LEGI - CNRS
France