Abstract
This article analyzes the peristaltic pumping characteristics of a third-order fluid in an endoscope. The governing momentum energy and concentration equations are simplified by using low Reynold's number and long wavelength approximations. The resulting, highly nonlinear equations are solved by (1) perturbation method and (2) shooting method. The solutions obtained by using both the methods are presented graphically to interpret physical behavior of the various parameters appearing in the problem. Trapping phenomena are also discussed at the end of the article. Copyright (C) 2010 Curtin University of Technology and John Wiley & Sons, Ltd.