Year: 2024
Type: article
Abstract: Small particles fall through sheared beds of larger particles in settings ranging from geophysics to industry, but the study of large-to-small size ratios R , spanning the trapping threshold R t , has been neglected. In simulations of noncohesive spheres for R < R t , the small-sphere vertical velocity v p first increases with shear rate γ ̇ as trapping time decreases, but v p then decreases as velocity fluctuations frustrate downward mobility. For R > R t , v p is constant at low γ ̇ , but again decreases at high γ ̇ . We model these behaviors and discuss analogies with electron transport in solids. Published by the American Physical Society 2024
Source: Physical Review Research
Institution: Northwestern University
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
OpenAlex ID: W4394843525