The behavior of a swirling buoyant turbulent jet in a cross
flow has been studied. Dimensional analysis has been
carried out to obtain asymptotic relations for the jet
trajectory and dilution. Experiments were carried out to
ascertain the validity of the relations obtained and to
evaluate the constants arising in the analysis. While
photographic observations were made to study the jet
trajectory, concentration measurements were made using a
light probe. Measurements of the spreading angle of the jet
were also made. The study indicated that swirl caused an
increase in spreading angle of the jet, and a great
improvement in jet dilution.