Author(s): H. Chanson
Linked Author(s):
Keywords: Dropshaft; Hydraulics; Air entrainment; Acoustics; Physical modelling
Abstract: A dropshaft is an energy dissipator connecting two channels with different invert elevations. Detailed air-water flow and acoustic measurements were conducted in a prototype dropshaft under controlled flow conditions, and complemented by a 1:3. 1 scale model study. Experimental observations showed three flow regimes with distinct acoustic signatures. Strong flow aeration was recorded in two flow regimes. Differences between model and prototype results document some limitations of a Froude similitude for studies of air entrainment, residence times and mass transfer in dropshaft.
Year: 2003