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The effects induced by a new embankment at the confluence between two rivers: TELEMAC results compared with a physical model
Author(s) -
Asaro Giuliano,
Paris Enio
Publication year - 2000
Publication title -
hydrological processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.222
H-Index - 161
eISSN - 1099-1085
pISSN - 0885-6087
DOI - 10.1002/1099-1085(200009)14:13<2345::aid-hyp33>3.0.co;2-x
Subject(s) - confluence , levee , geology , stability (learning theory) , domain (mathematical analysis) , geotechnical engineering , physical modelling , hydrology (agriculture) , environmental science , mathematics , computer science , mathematical analysis , machine learning , programming language
With the aim of evaluating the hydraulic risks connected with the construction of a new embankment at the confluence of the Magra Rivera and the Bagnone Torrent, an experimental analysis was conducted using an undistorted 1:55 scale physical model. A parallel study using the software TELEMAC‐2D applied to the same domain as the physical model and with the same boundary conditions was also carried out. The use of a numerical model enabled comparison of the results obtained from the physical model and a test of the reliability of the numerical model itself in terms of accuracy, stability and instability. In order to estimate the effects induced by the construction of a new embankment, two sets of experiments were carried out; in the first set bed and bank topography before constructed were modelled, and in the second set the actual situation with the embankment was considered. Comparison of data obtained from numerical simulations with measurements from the physical model showed a good agreement from a qualitative point of view. However, some differences were noticed in terms of local values, particularly in the bed morphology evolution where estimation of bed level variations are strongly dependent on the local sediment transport dynamics. Copyright © 2000 John Wiley & Sons, Ltd.