Modelo fluviomorfológico para bacias hidrográficas baseado no conceito de células de escoamento

Abstract

River morphological changes are natural processes often accelerated by human activities causing harmful and undesirable imbalances in the territory where they pass through. To take the necessary measures to ensure that a balance is reached, with respect to human occupation, we need to understand and predict the possible future impacts of this occupation on the basin. The model proposed in this work seeks to support this knowledge addressing the physical changes concerning the hydrodynamics, the movement of sediments and the consequent modifications they impose to the shape and position of watercourses. It uses the methodological approach related to the concept of flow-cells, already used in hydrodynamic model, applied to the sediment movement, to supply quantitative data that can provide the definition of the morphological variations that change the river course position. The model can represent the behavior of hydrosedimentological movements under various conditions and scenarios and thus translate into a quantitative result the morphological variations of watercourses, supporting decisions on design solutions.