The Effect of Peristalsis on Dispersion in a Micropolar Fluid

The paper presents an analytical solution for dispersion of a solute in the peristaltic motion of a micropolar fluid in the presence of both homogeneous and heterogeneous chemical reactions. The average effective dispersion coefficient has been found using Taylor’s limiting condition under long wavelength approximation. The effects of various relevant parameters on the average coefficient of dispersion have been studied. It is observed that average dispersion increases with amplitude ratio which implies that dispersion is more in the presence of peristalsis. The average dispersion decreases with micropolar parameters in the homogeneous case but increases in the case of combined homogeneous and heterogeneous chemical reactions. Further, average effective dispersion coefficient increases with heterogeneous reaction rate parameter.