CE 704 · Chapter 4
Hydropower Engineering past question
4.4.2 Methods of dissipating energy below a dam, stilling basin, ski-jump and flip buckets, their suitability, hydraulics of stilling basin, the role of tail-water in energy dissipation
Estimate the minimum length of the concrete apron (So=0.001) for stilling basin downstream from an overflow spillway. The spillway crest is 15m long and consider a discharge of 115 m³/s. Manning's roughness factor n=0.025. Assume the stilling basin is the same width as the spillway crest. Assume any other suitable data if necessary. Refer figure below. [10]