Abstract: The
paper presents an exact analysis of the
dispersion of solute in an oscillating
hydromagnetic Couette flow. Using a
generalized dispersion model which is valid
for all time after the injection of solute,
the diffusion coefficients Ki(t)
(i =
1, 2, 3, …)are
determined as function of time t
when the initial distribution of solute is in
the form of a slug of finite extent. The
second diffusion coefficient, i.e.,K2(t)gives
a measure of longitudinal dispersion of solute
due to the combined effect of molecular
diffusion and non-uniform/uniform velocity
distribution. The interesting part of the
analysis is that K2(t)consists
of a steady part S
and a fluctuating part D2(t)due
to the oscillation of flow.
Keywords and phrases: dispersion, oscillating, hydromagnetic.
