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Applied Bionics and Biomechanics - Volume 2015 2015, Article ID 283892, 9 pages -

Research Article

Department of Mathematics, COMSATS Institute of Information Technology, Wah Cantt. 47040, Pakistan

Department of Mathematics, Technical University of Iasi, 70050 Iasi, Romania

Academy of Romanian Scientists, 050094 Bucuresti, Romania

Received 14 October 2014; Accepted 27 January 2015

Academic Editor: Estefanía Peña

Copyright © 2015 Obaid Ullah Mehmood and Constantin Fetecau. 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.

Abstract

This paper looks at the effects of radiative heat transfer on the peristaltic transport of a Sisko fluid in an asymmetric channel with nonuniform wall temperatures. Adopting the lubrication theory, highly nonlinear coupled governing equations involving power law index as an exponent have been linearized and perturbation solutions are obtained about the Sisko fluid parameter. Analytical solutions for the stream function, axial pressure gradient, axial velocity, skin friction, and Nusselt number are derived for three different cases i.e., shear thinning fluid, viscous fluid, and shear thickening fluid. The effects of Grashof number, radiation parameter, and other configuration parameters on pumping, trapping, temperature, Nusselt number, and skin friction have been examined in detail. A good agreement has been found for the case of viscous fluid with existing results.





Autor: Obaid Ullah Mehmood and Constantin Fetecau

Fuente: https://www.hindawi.com/



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