Effect of Using Weirs Downstream of Parallel Submerged Jets from Opened Multiple Sluice Gates

The design procedure of regulators recommends the installation of weirs to help in
dissipating kinetic energy of water and controlling the hydraulic jump downstream.
With the construction of new regulators, the weir downstream the old one is no
longer needed and obstruct the water way. These problems appeared downstream
Rosetta, Damietta and Tesaa Barrages, for example. The objective of this paper is
to study the behavior of weirs downstream of a hydraulic regulator with opened
multiple sluice vertical gates. The one-Dimensional Model SOBEK used for
simulation of Bahr Moues from km 36.0 to km 39.5. The regulator considered for
this analysis is Tesaa Regulator which was built in 1832 and is located across Bahr
Moues at km 36.0. Three scenarios were tested; The first scenario suggested
changing the dimensions of the existing weir with the existing bed levels. The
second one considered dredging the canal to the design levels and keeping the
dimensions of the existing weir as is. The second scenario is considered to be more
expensive than the first one. It was, however, recommended to adopt the second
scenario as it preserves the old regulator which is considered an Islamic
archeological structure.