Energy dissipation using multi-pendulum sill downstream sluice gate. | ||||
| The Egyptian International Journal of Engineering Sciences and Technology | ||||
| Volume 51, Issue 1, September 2025, Page 21-27 PDF (1.4 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eijest.2024.330764.1300 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Elsayed mohamed Elshahat   1; osama saleh2; mariam A elattar3; Eslam Eltohamy 4
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| 1Water and Water Structure Engineering Department, Faculty of Engineering, Zagazig University, Zagazig, Egypt | ||||
| 2Zagazig unversity | ||||
| 3water and water structures department- faculty of engineering -zagazig university | ||||
| 4Zagazig University | ||||
| Abstract | ||||
| Many researchers have already investigated different energy dissipator designs both theoretically and empirically in order to maximize energy dissipation and minimize length for the hydraulic jump. This study introduces a novel method to decrease the hydraulic structure's floor length and boost energy dissipation. To do this, a pendulum sill is used downstream of the hydraulic structure's sluice gate. The pendulum sills are hollow plastic cylinders, 29.5 cm long and diameter of 5.00 cm, with a wall thickness of 5 mm, and filled with constant stones. The sill location was changed with respect to the hydraulic jump by changing the string length. The number of sills was studied by using one; two and three sills tied each other by intermediate strings. The results showed that using the pendulum sill increased the energy dissipation. It was found that the best case is to use three cylinders, as the energy dissipation increases by approximately 55%. | ||||
| Keywords | ||||
| Pendulum sill, Energy dissipation, Hydraulic jump, sluice gate; sill | ||||
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