Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 861508, 18 pages
Research Article

On the Study of Viscoelastic Walters' B Fluid in Boundary Layer Flows

Department of Mechanical Engineering, College of Engineering, University of Tehran, Tehran 1439955961, Iran

Received 27 April 2011; Revised 4 August 2011; Accepted 7 October 2011

Academic Editor: Gradimir V. Milovanović

Copyright © 2012 Seyed Ali Madani Tonekaboni et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Viscoelastic Walters' B fluid flows for three problems, stagnation-point flow, Blasius flow, and Sakiadis flow, have been investigated. In each problem, Cauchy equations are changed to a nondimensional differential equations using stream functions and with assumption of boundary layer flow. The fourth-order predictor-corrector finite-difference method for solving these nonlinear differential equations has been employed. The results that have been obtained using this method are compared with the results of the last studies, and it is clarified that this method is more accurate. It is also shown that the results of last study about Sakiadis flow of Walter's B fluid are not true. In addition, the effects of order of discretization in the boundaries are investigated. Moreover, it has been discussed about the valid region of Weissenberg numbers for the second-order approximation of viscoelastic fluids in each case of study.