Author(s): Ricardo Gutierrez; Alejandro Mendoza; Moises Berezowsky And Maritza Arganis
Linked Author(s): Alejandro Mendoza
Keywords: Riparian vegetation River morphology Numerical model TELEMAC
Abstract: Important efforts have been made to model the effects of vegetation on river morphodynamics, but most of them are focused on modeling the vegetation as static elements parameterized by equivalent roughness coefficient or in implicit form. Those approaches do not take into account the variation in space and time and the life cycle of vegetation, and how it alters the sediment transport by modifying the flow characteristics. In order to solve this limitation, a new model for vegetation effects is outlined here. The model combines TELEMAC2D and SYSIPHE of the open suite TELEMAC-MASCARET with the vegetation development modules of the DRIPVEM model and additionally two models to estimate the non-rigid drag coefficient for tree and the bulk drag coefficient for herb. The outcomes showed that the model can simulate the variations in herb biomass during flood events and alter the velocity field which induces changes in sediment deposition.
Year: 2025