Air Entrainment by a Plunging Jet In collaboration with J. H. Duncan. This project is aimed at trying to understand some of the fundamental mechanisms which are responsible for the inception of many two-phase flows. The experiment itself consists of a laminar liquid plunging jet which strikes a quiescent pool. This configuration is important in many process, including aeration of streams and coastal waters, entrainment of bubbles withing the wake of ships (important for flow prediction and acoustics), and within chemical two-phase reactors. The sequence of images below show the inception process recorded using high-speed photography from above the free surface along with a corresponding image viewed from a perspective below the free surface. The goal of the study is to determine the critical conditions required for air entrainment in terms of disturbance wavelength, amplitude, jet velocity and jet diameter.   | research | publications | biography | teaching | home |