Abstract The spillways are one of the most important hydraulic structures used in river engineering, dam construction, irrigation, and drainage engineering projects. Recently, a new type such with circular crest has been proposed. In this paper, properties crested stepped spillway (CCSS) including flow pattern, distribution velocity on pressure, turbulence intensity, discharge coefficient ( $${...

hydraulics of stepped spillway is a very complicated phenomenon, as it consists of a two phase flow passing through a set of designed steps. the steps increase the rate of energy dissipation taking place on the spillway face. turbulence, flow aeration and energy dissipation are the main tasks in the design of such structures. this study consists of the experimental investigation to determine th...