Round Buoyant Jet Entering Shallow Water in Motion

Abstract

This paper focuses on the mixing processes that develop when a buoyant jet from a round outfall pipe enters a shallow moving body of water. Results from a detailed experimental study quantify the effects on jet mixing produced when a current is imposed on shallow receiving water. Findings show that the dilutions of buoyant jets entering these environments are significantly different from those discharging into unconfined (deep‐water) conditions. Mixing features discussed include the application of scaling relationships in collapsing integral parameter data and the role played by the Coanda effect in influencing the mixing of jets. Patterns of jet path, centerline dilution, total dilution, horizontal and vertical half widths, and a novel width parameter are described and compared with shallow stationary and current affected deep‐water results.