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This document summarizes research on granular flows, both dry and wet. It discusses several key findings: 1) Dry granular flows can be modeled as viscoplastic materials, with an "inertial number" relating shear rate to confining pressure. This approach works well for many configurations but has limits like shear bands. 2) Wet granular flows are influenced by fluid interactions, which can change rearrangement timescales. Experiments show the viscosity depends on an "viscous number" similarly to the inerti

Author

glhunter

Language

EN