Sediment transport modelling in shallow water framework

Tomás Morales de Luna

Sediment transport and the morphological evolution of riverbeds due to deposition and erosion are active areas of study in fluvial processes. Sediment is transported by the river current as either suspended load (finer fractions carried by the flow) or bedload (coarser fractions that move close to the bottom by rolling, jumping, and sliding).

A straightforward approach to model such processes is to use the shallow water framework. However, vertical effects can play a significant role in practical applications.

In this context, we present generalizations of shallow-type models to achieve a more accurate description of fluid dynamics in the vertical direction. Specifically, we introduce the multilayer and moment approaches.