Abstract:
On the assumption that the velocity and density distributions
across a jet of one gas issuing into a stream of a second gas are of
exponential form, the momentum integral approach has been employed to
find the variation of centre-line velocity downstream of the potential
core. The results for the particular case of a jet issuing into a gas
at rest are equivalent to those found theoretically by Blottner (Ref. 2)
and experimentally by Keagy and Weller (Ref. 1). The results for the
jet issuing into a moving stream agree with the limited experiments of
the present author.
These calculations show the importance of jet to free-stream density
ratio with respect to the rate of decay of the jet downstream of the
mixing region.
