Author(s): Anika Govil; Nishank Agrawal; Ellora Padhi; Gopal Das Singhal
Linked Author(s): Gopal Das Singhal, Ellora Padhi
Keywords: Hydraulic jump Ogee Spillway Scour Stilling basin Submergence Factor
Abstract: This study examines downstream scour patterns induced by hydraulic jumps below ogee spillways, focusing on the effects of stilling basin design, submergence conditions, sequent, and tailwater depths. Experiments were performed with discharge rates of 11 L/s and 15 L/s under both free and submerged jump conditions, utilizing two stilling basin designs: a smooth bed and a corrugated bed with a 22 mm amplitude. Submergence factors of 0.25 and 0.4 were applied to evaluate their influence on downstream erosion mitigation. The research aims to assess how varying submergence conditions impact the performance of these stilling basins in reducing scour. Key findings highlight the interplay between hydraulic jump dynamics, stilling basin configurations, and tailwater conditions, offering valuable insights into optimizing basin design for better energy dissipation and minimized downstream scour. By comparing the local scour patterns for both smooth and corrugated bed configurations, this study provides a comprehensive analysis of how physical modifications to stilling basins influence scour behavior. The results contribute to the development of more efficient, resilient, and sustainable hydraulic structures, enhancing the durability of infrastructure by reducing downstream erosion.
Year: 2025