Effect of Jet Air Content on Plunge Pool Scour

Numerical Simulation of the Spreading of Aerated and Nonaerated Turbulent Water Jet in a Tank with Finite Water Depth

“…However, when the aerated jet velocity is 319 the same as the pure water jet velocity, the maximum pressure of aerated jet is smaller 320 than that of nonaerated jet due to the decrease of the density of aerated jet. This 321 conclusion is consistent with that of Canepa and Hager (2003). 322…”

Submerged and unsubmerged natural hydraulic jumps in a bedrock step-pool mountain channel

“…over 10 m) with vertical or over-hanging bed form geometries may have regions not subject to direct flow-induced shear for a large range of discharges. Break up and aeration of the flow jet, which was not investigated in this study, may also attenuate scour considerably as has been shown in laboratory flume investigations (Chanson, 1996;Bennett et al, 2000;Bennett and Casali, 2001;Canepa and Hager, 2003). In addition, differences in jet projection length suggest low-to moderate-dipping sloping jet regions (e.g.…”

Trajectories and air flow features of ski jump-generated jets

“…This leads to a spread of the jet decreasing its density due to air entrainment. The resulting larger jet-footprint on the plunge pool surface as well as the decreased density reduces the scour potential on a loose river bed (Canepa andHager 2003, Pagliara et al 2006). Such a loose bed is however rapidly washed out during operation.…”