Analysis of Turbulent Buoyant Jet in Density‐Stratified Water

Abstract

A turbulent buoyant jet in a stratified ambient fluid is investigated. The integral analysis approach is used and extended. By applying the similarity hypothesis for velocity and temperature profiles and deriving an entrainment function from the integral equations, a general model is developed. The model predicts jet trajectories, center‐line temperature or density and velocity decay, and the dilution on the axis of a turbulent buoyant jet discharged at an arbitrary angle into a density‐stratified or uniform ambient. The pressure distribution is not hydrostatic as in most other models. The effects of density change and jet curvature on pressure are explicitly evaluated. Predictions obtained with the model are compared with experimental data.