Characteristics of Radial Jets and Mixing under Buoyant Conditions

Abstract

This paper reports on measurements of radial jets using a laser-doppler anemometer and compares the mixing efficiency of a single radial jet with that of a single round jet under buoyant conditions based on experimental data. Dimensional analysis yields two parameters for the calculation of initial dilutions of jets and buoyant plumes. It is noticed that initial dilution of radial jets is much higher than that of round jets having the same source discharge, source buoyancy flux, outlet velocity and area because of intensive entrainment of the radial jet in the zone near the discharge point. Theoretical analysis indicates that the central velocity of the radial jet decays with jet path at a rate of −