Energy dissipators, such as stilling basins, are usually required at the toe of stepped chutes to achieve adequate and safe operation spillway. Stepped chute hydraulics has been extensively studied in last several decades, however, only limited knowledge is available on basin performance below chutes. In particular, effect slope remains unknown, despite being a central design issue. Therefore, ...

Erosion at either dam or spillway foundations, destabilization in riverbanks, and damage the natural environment located downstream of dams spillways represent crucial elements to be taken into account risk assessment hydraulic structures. One main problems is related scouring that water flow may induce boundary spillways. This issue exacerbated case undersized stilling basins, i.e., when a sig...

Background: Hydraulic jump is considered the most appropriate option for designers to dissipate energy through stilling basins. Methods: Tests on a screen that produced submerged hydraulic were conducted of water passing beneath vertical gate. Various positions in sudden expanding basin investigated. In comparison no-screen case, effect downstream gate surface profile was also Results: The best...