Diffusion in multicomponent granular mixtures.
basic_science · Level V
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- Record sourced from PubMed, PMID 38491577.
- Also identified by DOI 10.1103/PhysRevE.109.024903.
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Abstract
We investigate diffusion in polydisperse granular media. We derive the mean-squared displacement of granular particles in a polydisperse granular gas in a homogeneous cooling state, containing an 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 the mean-squared displacement for steep size distributions.