Numerical simulation of pebble abrasion in a tumbling barrel using Discrete Element Method (DEM)
Résumé
Sediments in torrential flows are transported both as bedload and suspended load according to their sizes. Mechanical abrasion is one of the processes responsible for changes in the grain-size distribution (usually described as downstream fining), increasing the suspended fraction of the total amount of sediment transported. This can contribute to the formation of hyperconcentrated suspensions as observed in the marly catchments of Draix (Alpes de haute Provence, France).