• PERISTALTIC PUMPING OF A FOURTH GRADE FLUID THROUGH A POROUS MEDIUM IN AN ASYMMETRIC CHANNEL

Abstract

In this paper, the peristaltic flow of a fourth grade fluid through a porous medium in an asymmetric channel under the assumption of long wavelength is investigated. Series solutions of axial velocity and pressure gradient are given by using regular perturbation technique when Deborah number is small. Numerical computations have been performed for the pressure gradient and pressure rise. The effects of various pertinent parameters on the pressure gradient and pumping characteristics are discussed in detail.