Author(s): Robert M. Boes; Hans-Erwin Minor
Linked Author(s): Robert Boes
Keywords: Ir-entrainment; Boundary layer; Cavitation; Inceptionpoint; Stepped spillways; Two-phase flow
Abstract: Experimental investigations on the location of the inception point of air entrainment on stepped spillways and on the flow depth at this characteristic point were conducted at the Laboratory of Hydraulics, Hydrology and Glaciology (VAW). The results are compared to literature model data and empirical fits proposed by several authors, and new approximations are presented for chute inclination angles between 26° and 75°. These fits reliably predict both the vertical distance from the spillway crest to the inception point as well as the corresponding flow depth.
Year: 2001