Experimental study improves stilling basin efficiency in response to increased discharges due to climate change in Iraq, suggesting design modifications.
Key Points
This study aims to enhance the performance of stilling basins to handle increased discharges caused by climate change.
Conducted experiments on a physical model of a Type III stilling basin in Iraq.
Evaluated a standard basin and three modified models with discharges ranging from 20 to 130 m³/h.
Analyzed energy dissipation efficiency at various discharges to determine the effectiveness of modifications.
Energy dissipation efficiency of the standard basin was 36% at design discharge, dropping to 26% at higher discharges.
Modification 1 (redistributed baffle blocks) did not enhance performance, maintaining efficiency at 25–26%.
Modification 3 (adding a second row of blocks) achieved 43% efficiency at design discharge and above 29% at higher discharges, showing improved stability.