<abstract xmlns="http://www.w3.org/1999/xhtml"><p>A large-scale piano key weir laboratory study was conducted to investigate the evolution of the scour process occurring in the downstream basin for two non-cohesive granular bed materials, including the analysis of scour-hole geometry and patterns at equilibrium. It was observed that hydraulic conditions, particularly tailwater level, significantly affect the scour mechanisms and equilibrium morphology, eventually resulting in scour depths that exceeded the weir height. Unprecedented insights on the scour dynamics are also provided, along with tools to estimate the time evolution and maximum scour depth, its location in the streamwise direction, and the maximum scour length.</p></abstract>

A large-scale piano key weir laboratory study was conducted to investigate the evolution of the scour process occurring in the downstream basin for two non-cohesive granular bed materials, including the analysis of scour-hole geometry and patterns at equilibrium. It was observed that hydraulic conditions, particularly tailwater level, significantly affect the scour mechanisms and equilibrium morphology, eventually resulting in scour depths that exceeded the weir height. Unprecedented insights on the scour dynamics are also provided, along with tools to estimate the time evolution and maximum scour depth, its location in the streamwise direction, and the maximum scour length.

Evolution of local scour downstream of Type A PK weir in non-cohesive sediments

Department of Civil and Environmental Engineering

DESTEC-Department of Energy, Systems, Territory and Construction Engineering

Journal of Hydrology and Hydromechanics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Evolution of local scour downstream of Type A PK weir in non-cohesive sediments"}

A large-scale piano key weir laboratory study was conducted to investigate the evolution of the scour process occurring in the downstream basin for two...

Evolution of local scour downstream of Type A PK weir in non-cohesive sediments

Published Online: Feb 12, 2022

Page range: 103 - 113

Received: May 28, 2021

Accepted: Oct 15, 2021

DOI: https://doi.org/10.2478/johh-2021-0035

Keywords
Equilibrium morphology, Granular bed, Piano key weir, Scour evolution

© 2022 Wyatt D. Lantz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Evolution of local scour downstream of Type A PK weir in non-cohesive sediments

Published Online: Feb 12, 2022

Page range: 103 - 113

Received: May 28, 2021

Accepted: Oct 15, 2021

DOI: https://doi.org/10.2478/johh-2021-0035

KeywordsEquilibrium morphology, Granular bed, Piano key weir, Scour evolution

© 2022 Wyatt D. Lantz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Equilibrium morphology, Granular bed, Piano key weir, Scour evolution