Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
RIVERBED EFFECT INFLUENCE IN A RIVER DEBRIS REMOVAL SOLUTION FLOATING BARRIER
Submission Author:
Patrick Donegá Queiroz , SP
Co-Authors:
Patrick Donegá Queiroz, Andre Mitsuo Kogishi, Felipe Santos de Castro, Joao Lucas Dozzi Dantas
Presenter: Patrick Donegá Queiroz
doi://10.26678/ABCM.COBEM2023.COB2023-1228
Abstract
The Tietê River is located in São Paulo, Brazil, and is home to Small Hydroelectric Power Plants, despite the severe pollution. To prevent the debris to reach the equipment, the Metropolitan Water and Energy Company (EMAE) and the Institute for Technological Research (IPT) developed an active barrier to capture debris, which includes modular floating barriers called trash boom lines. The loads on these barriers are affected by different operational and environmental conditions, such as the current velocity and the line arrangement and mooring, resulting in a complex non-linear system and, since the water level changes, the distance from the water surface to the riverbed plays an essential factor in the hydrodynamic resistance. Using ANSYS Fluent to investigate the riverbed effect on the trash boom at different current velocities and incident angles and its impact on normal and lateral loads. The simulations revealed that the normal force component acting on the module is significantly affected by the riverbed height, reaching up to 2.5 times in the lesser height condition tested (3.5 m) in comparison to the deepest condition (15 m). The result shows that the riverbed height need to be considered during the dimensionalization of the trash boom lines loads.
Keywords
Riverbed Effect, Shallow Water Effect, Computational Fluid Dynamics, Floating Barrier, Small Hydroelectric Powerplants
