Experimental measurements on the axial dispersion of fluid in an oscillator
y baffled tube that is operated continuously were studied. Two models, the
continuous stirred tank with feedback and the plug flow with axial dispersi
on, were used to analyze the residence-time distributions and determine the
axial dispersion for this system. The effect of the density of tracer solu
tion, the tracer injection position, and the tracer injection time on the a
xial dispersion was explored It was found that the axial dispersion was sen
sitive to the changes in the density of tracer solution, but insensitive to
the tracer injection position and injection time. A correlation linking th
e axial dispersion with the energy dissipation in the system bath in the ab
sence and presence of fluid oscillation was established. The Isotropic Turb
ulence Theory was applied and for the first time the mixing length in the s
ystem was evaluated and compared with that of other devices.