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Diffusion in multicomponent granular mixtures (2311.15139v3)
Published 25 Nov 2023 in cond-mat.soft and cond-mat.stat-mech
Abstract: We investigate diffusion in a polydisperse granular media. We derive mean-squared displacement of granular particles in a polydisperse granular gas in a homogeneous cooling state, containing arbitrary amount of species of different sizes and masses. We investigate both models of constant and time-dependent restitution coefficients and obtain a universal law for the size-dependence of MSD for steep size distributions.
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