Author(s)

C. Gualtieri & H. Chanson

Abstract

Dropshafts are commonly used in sewers and stormwater channels as energy dissipator systems. Since recent effort has been devoted to the characterization of dropshaft hydraulics and air-water flow properties, the present paper develops an analysis of the bubble clustering process using new experimental data collected in a large-size facility. The results highlight some significant patterns in cluster production. Finally, interfacial areas for mass-transfer were measured. 1 Foreword A dropshaft is an energy dissipator connecting two channels with different invert elevations. This type of structure is commonly used in sewers [1] and storm water systems. Small dropshafts are also used upstream and downst

Keywords