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(Article of periodic en Anglais - 2011)

Document title

Bed scouring downstream of hydraulic structures under steady flow conditions : experimental analysis of space and time scales and implications for mathematical modeling

Authors(s) and Affiliation(s)

TERMINI D. (1) ;
(1) Dip. di Idraulica ed Applicazioni Ambientali, Fac. di Ingegneria, Univ., Palermo, ITALIE

Abstract

In this work, attention is paid to scouring process occurring downstream of the rigid basement of a hydraulic structure. The analysis is focused on transient bed profiles which are determined, under steady flow conditions, by a decrease of the upstream sediment transport rate. For this purpose, movable-bed runs are carried out in a straight laboratory channel, for two values of the water discharge. During each run, the longitudinal bed profiles are measured at different times. Based on experimental data, spatial scale factors of the bed scouring and of the bed load transport to reach the equilibrium conditions are defined. Particularly, it is found that the scour length varies especially during the first evolution phase and then it oscillates around of a mean value

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2011, vol. 84, no3 [pp. 125-135]

Bibliographic references : 1 p.

Collation : 19 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2010.10.008

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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