Effect of Peripheral Layer on Peristaltic Transport of a Couple Stress Fluid
G. Radhakrishnamacharya, Karanamu Maruthi Prasad · International Journal of Fluid Mechanics Research · 2009
Peristaltic transport of a two fluid model with couple stress fluid in the core region and Newtonian fluid in the peripheral layer is considered. Using the long wavelength approximation, the equations governing the flow are solved and closed form expressions for pressure rise and time averaged flux have been obtained. The effects of various parameters on these flow variables have been studied. It is found that pressure rise increases with couple stress fluid parameter and viscosity ratio, but decreases with mean radius of central layer. However, the fric-tional force decreases with viscosity ratio.