Hydraulic jump downstream of a stepped chute : an experimental study

Stojnic, Ivan (Laboratory of Hydraulic Constructions, EPFL, Lausanne, Switzerland ; CERIS, Instituto Superiror Técnico, Universidade de Lisboa, Lisbon, Portugal) ; Pfister, Michael (School of Engineering and Architecture (HEIA-FR), HES-SO // University of Applied Sciences Western Switzerland) ; Matos, Jorge (CERIS, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Switzerland) ; Schleiss, Anton J. (Laboratory of Hydraulic Constructions, EPFL, Lausanne, Switzerland)

The number of stepped spillways significantly increased in the past decades. Among other reasons, this is due to their energy dissipation potential leading to a reduction of the residual energy at the toe of the spillway. To date, only fragmentary designed guidelines are available for the stilling basin design in conjunction with stepped chutes. Therefore, tests were carried out on a large-scale physical model of a 30° stepped chute in combination with a classical stilling basin, to study the effect of stepped chute inflow on the hydraulic jump features. Detailed air-water flowmeasurements of the inflow conditions were conducted, as well as of the free surface and dynamic bottom pressures along the hydraulic jump. Specifically results on the free surface, bottom pressure and length characteristics are presented and discussed herein.


Keywords:
Conference Type:
full paper
Faculty:
Ingénierie et Architecture
School:
HEIA-FR
Institute:
iTEC - Institut des technologies de l'environnement construit
Publisher:
Panama City, Panama, 1-6 september 2019
Date:
2019-09
Panama City, Panama
1-6 september 2019
Pagination:
10 p.
Published in:
Proceedings of the 38th IAHR World Congress, 1-6 september 2019, Panama City, Panama
DOI:
External resources:
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Note: The status of this file is: restricted


 Record created 2019-10-22, last modified 2019-10-29

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