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Steady flow at a breached levee

Steady flow at a breached levee The present study uses a laboratory scale experimental model and an analytical model to study the steady flow at a breached levee. Flow past a zero height side weir is considered for the purpose. Water surface elevation and the three-dimensional velocity field are measured by a point gauge and an Acoustic Doppler Velocimeter (Vectrino), respectively. Experimental results include the velocity field, free surface elevation, turbulent kinetic energy and bed shear stress. Empirical relations to predict the minimum water depth and discharge at the breach are obtained. An analytical model to predict the approximate flow field at the breach is also developed. The model parameters are calibrated using the experimental results. The approximate flow conditions predicted by the analytical model can be used for field conditions. The 17th Street Canal breach is employed as a case study to demonstrate the performance of the analytical model. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Water Engineering and Research Taylor & Francis

Steady flow at a breached levee

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Publisher
Taylor & Francis
Copyright
© 2023 IAHR and WCCE
ISSN
2324-9676
DOI
10.1080/23249676.2023.2252336
Publisher site
See Article on Publisher Site

Abstract

The present study uses a laboratory scale experimental model and an analytical model to study the steady flow at a breached levee. Flow past a zero height side weir is considered for the purpose. Water surface elevation and the three-dimensional velocity field are measured by a point gauge and an Acoustic Doppler Velocimeter (Vectrino), respectively. Experimental results include the velocity field, free surface elevation, turbulent kinetic energy and bed shear stress. Empirical relations to predict the minimum water depth and discharge at the breach are obtained. An analytical model to predict the approximate flow field at the breach is also developed. The model parameters are calibrated using the experimental results. The approximate flow conditions predicted by the analytical model can be used for field conditions. The 17th Street Canal breach is employed as a case study to demonstrate the performance of the analytical model.

Journal

Journal of Applied Water Engineering and Research – Taylor & Francis

Published: Sep 1, 2023

Keywords: Levee breach flow; Reynolds Transport Theorem; 17th Street Canal breach; Acoustic Doppler velocimeter

References

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