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(Article of periodic en Anglais - 2011)

Document title

Turbulent shear stresses in hydraulic jumps, bores and decelerating surges

Authors(s) and Affiliation(s)

CHANSON H. (1) ;
(1) Univ. of Queensland, Brisbane, AUSTRALIE

Abstract

Herein, a physical investigation was conducted in a relatively large rectangular channel. Hydraulic jumps and surges were generated by the rapid closure of a gate at the channel downstream end. The turbulent shear stresses were measured with high temporal and spatial resolution in the jump flow. A comparison between the stationary hydraulic jump, hydraulic jump in translation and decelerating surge measurements showed some marked differences in terms of turbulent mixing. The results highlighted some intense mixing beneath the jump front and roller for all configurations. The levels of turbulent stresses were one to two orders of magnitude larger than a critical threshold for sediment motion. The findings provide some insights into the hydraulic jump migration processes in mobile bed channels, and the complex transformation from a moving jump into a stationary jump

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2011, vol. 36, no2 [pp. 180-189]

Bibliographic references : 33 ref.

Collation : 8 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2031

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
Refdoc record number (ud4) : 24247619 : Permanent link - XML version
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