Investigating the peak outflow through a spatial embankment dam
breach

Faculty	Engineering	Year:	2022
Type of Publication:	ZU Hosted	Pages:
Authors:	Staff Zu Site Abstract In Staff Site
Journal:	Ain Shams Engineering Journal Elsevier	Volume:

Keywords :	Investigating , peak outflow through , spatial embankment
Abstract:	Investigating the breach outflow hydrograph is an essential task to conduct mitigation plans and flood warnings. In the present study, the spatial dam breach is simulated by using a three-dimensional computational fluid dynamics model, FLOW-3D. The model parameters were adjusted by making a comparison with a previous experimental model. The different parameters (initial breach shape, dimensions, location, and dam slopes) are studied to investigate their effects on dam breaching. The results indicate that these parameters have a significant impact. The maximum erosion rate and peak outflow for the rectangular shape are higher than those for the V-notch by 8.85% and 5%, respectively. Increasing breach width or decreasing depth by 5% leads to increasing maximum erosion rate by 11% and 15%, respectively. Increasing the downstream slope angle by 4 leads to an increase in both peak outflow and maximum erosion rate by 2.0% and 6.0%, respectively.

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