Segregation in granular binary mixtures: Thermal diffusion

Abstract

A recent solution of the inelastic Boltzmann equation that applies for strong dissipation and takes into account non-equipartition of energy is used to derive an explicit expression for the thermal diffusion factor. This parameter provides a criterion for segregation that involves all the parameters of the granular binary mixture (composition, masses, sizes, and coefficients of restitution). The present work is consistent with recent experimental results and extends previous results obtained in the intruder limit case.

4 figures. to be published in Europhys. Lett

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• Thermal diffusion segregation in granular binary mixtures described by the Enskog equation
• Mass transport of impurities in a moderately dense granular gas
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• Memory effects in the relaxation of a confined granular gas
• Thermal Segregation Beyond Navier-Stokes
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• Segregation by thermal diffusion in granular shear flows
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• Tracer diffusion coefficients in a moderately dense granular suspension. Stability analysis and thermal diffusion segregation
• Diffusion of impurities in a moderately dense confined granular gas
• Impurity in a granular gas under nonlinear Couette flow
• Hydrodynamic granular segregation induced by boundary heating and shear
• Computer simulations of an impurity in a granular gas under planar Couette flow
• Rheology of a dilute binary mixture of inertial suspension under simple shear flow
• Kinetic Theory for Binary Granular Mixtures at Low-Density
• Statistics of a 2D immersed granular gas magnetically forced in volume
• Diffusion of intruders in a granular gas thermostatted by a bath of elastic hard spheres
• Kinetic theory of polydisperse granular mixtures: influence of the partial temperatures on transport properties. A review
• Polydispersity and optimal relaxation in the hard sphere fluid