Scour under submerged circular vertical jets in cohesionless sediments

Abstract

The results of an experimental study on scour under submerged circular vertical jets of water in cohesionless sediments are presented. The laboratory experiments were carried out to investigate the response of gravel beds to the action of vertical submerged water jets. Eight experimental runs were conducted to know the behavior of scour process under submerged vertical jet. The experiments involved various jet diameters and jet heights from the bed level. Measurements were made for both maximum dynamic and static scour depths of the scour hole. It was found that the dynamic scour depth is much larger than the static scour depth at the asymptotic state. The temporal variations of scour depth and maximum static scour depth have been quantified.