Author(s): L.M. Stancanelli; S. Lanzoni; C. Gregoretti

Linked Author(s): Carlo Gregoretti

Keywords: Velocity profiles; Solid-liquid mixtures; Grain-inertia range; Debris flow; Rheology

Abstract: We investigate the features of velocity profiles observed in a systematic series of flume experiments of solid-liquid mixtures in the grain-inertia range. The dimensionless profiles collapse using as a scale the runoff velocity. The shape of profiles suggests the presence of different stress generating mechanisms. A power law characterization is proposed following a heuristic approach based on a coherence length compatible with a spatially varying rheology.

DOI: https://doi.org/10.3850/978-981-11-2731-1_385-cd

Year: 2018