Journal
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
Volume 45, Issue 6, Pages 2859-2867Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2014.08.018
Keywords
Rotating disk; Powell-Eyring fluid; Homotopy analysis method (HAM); Magnetohydrodynamics (MHD)
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This paper investigates the problem of steady, laminar, flow of an incompressible, non-Newtonian Powell-Eyring fluid. The flow is induced over a rotating disk and flowing under the influence of transverse magnetic field. The behavior of Powell-Eyring fluid is characterized by the constitutive equation due to Powell and Eyring. Reduction from nonlinear partial differential equation to the ordinary differential equation has been made by employing similarity transformation. Resulting nonlinear analysis is carried out for series solution by using homotopy analysis method (HAM). The influences of relevant Powell-Eyring fluid parameters, Reynolds number and magnetic field parameter on the velocity, pressure and shear stress which are of the chief physical interest are analyzed through graphical outcomes. The present results are compared with the existing limiting solutions showing very good agreement with each other. For the considered flow the present paper also correspondingly illuminates the validity and power of the HAM-based Mathematica package i.e. optimized HAM (BVPh 2.0) available online (http://numericaltank.sjtu.edu.cn/BVPh.htm). (C) 2014 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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