Molecular dynamics studies of thermal convection in fluids of soft and hard disks: A comparison

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Abstract
Simulations of Rayleigh-Bénard convection have been carried out using molecular dynamics methods. This article focuses on the different kinds of time-dependent roll structure observed in studies of soft-and hard-disk fluids. In both cases periodic oscillations were observed, but despite similar imposed conditions the periods and amplitudes differed significantly. Such behavior suggests that the two fluids are not at the same state point as far as the convection is concerned.