Title:
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Two-dimensional modelling of discharge distribution in vegetated compound channel (Besòs river)
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Author:
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Bladé i Castellet, Ernest; Gómez Valentín, Manuel; Sánchez Juny, Martí; Pomares Abad, Juan
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Hidràulica, Marítima i Ambiental; Universitat Politècnica de Catalunya. FLUMEN - Dinàmica Fluvial i Enginyeria Hidrològica |
Abstract:
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Flow distribution in Besòs river is studied by means of a two dimensional numerical model
and a scale model. Besòs river presents a compound channel floodway with a central
sinusoidal main channel and floodplains at each side of it. Floodplains are used for
wastewater treatment and for that reason covered with flexible 2m high vegetation.
It is shown that good agreement of numerical model and physical model is achieved with a
high resolution numerical model based on the conservative form of Saint Venant equations
and finite volumes, provided variations of roughness with unit discharge is taken into account, with no need of turbulence models.
Good results are achieved in predicting lateral discharge distribution and flow exchange from main channel and floodplains with the two dimensional approach, something that cannot be done with one dimensional models as exemplified with a one dimensional simulation of the same case. |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia -Streamflow--Mathematical models -Cabal (Hidrologia) -- Mesurament -- Models matemàtics |
Rights:
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Document type:
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Article - Submitted version Conference Object |
Published by:
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Corila
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