A theoretical model based on a depth-averaged version of two-phase flow equations is
developed to describe the initiation of underwater granular avalanches. The rheology of the …

Rheological properties of dense flows of hard particles are singular as one approaches the
jamming threshold where flow ceases both for aerial granular flows dominated by inertia …

We report laboratory experiments on intense bed‐load driven by turbulent open‐channel
flows. Using high‐speed cameras and a laser light sheet, we measured detailed profiles of …

Bedload, the transport of sediment remaining in contact with the stream bed, has mainly
been studied from the perspective of the correlation between fluid driving forces and the …

The transport of sediment through river channels has major consequences for public safety,
management of water resources, and environmental sustainability. Most studies of sediment …

We report on recent advances in experiments and modeling of particle–fluid flows that are
relevant to an understanding of debris flows. We first describe laboratory experiments on …

Intense bed-load, or sheet flow, occurs when a free-surface flow of water drives a thick,
rapidly sheared layer of water and grains over an erodible granular bed. We examine here …

This work focuses on the mechanical response of dry granular materials under steady,
simple shear conditions. In particular, the goal is to obtain a complete rheology able to …

We apply the constitutive relations of kinetic theory of granular gases to the transport of
cohesionless sediments driven by a gravitational liquid turbulent stream in steady uniform …

This work focuses on the sediment transport that is dominated by collisional exchange of
momentum between particles and can be identified as the transition regime between bed …