CHARACTERISTICS OF FLOW DOWNSTREAM OF SKI-JUMP BUCKETS

Abstract

Ski-jump bucket or trajectory bucket is a well-known energy dissipator generally provided downstream of a spillway whenever the channel bed immediately downstream of the spillway is of sound rock, and adequate tailwater depth does not exist for the formation of, a hydraulic jump. The present investigation was aimed at establishing a submergence criterion for ski-jump buckets and also to provide information on the variation of shear stress on the river bed downstream of the bucket with respect to different geometric and flow parameters.