The objective of this study was to assess the impact of stepped spillways on the dimensions of stilling basins. This goal can be reached by using the computational fluid dynamics code FLUENT, which works with the ANSYS software. The experiment’s results were used to test the code. The results from the code were identical to what the first results of the experiment showed. Then, the code was used on 45 different stepped spillways, each with three different step numbers: 20, 30, and 40 steps. Then, the code was used on each of the spillways. There are three different step slopes in this area: 0°, 6°, and 12°. There were five different flows: 0.16, 0.32, 0.48, 0.64, and 0.8 m3/s. The study found that stepped spillways with sloped steps needed a stilling basin that was 16% shorter. This was in contrast to stepped spillways featuring level steps.
Zaid et al. (Wed,) studied this question.