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Magnetohydrodynamic flow of a Sisko fluid in annular pipe: A numerical study
Author(s) -
Khan Masood,
Abbas Qaisar,
Duru Kenneth
Publication year - 2009
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.2068
Subject(s) - magnetohydrodynamic drive , mechanics , non newtonian fluid , magnetohydrodynamics , newtonian fluid , fluid dynamics , flow (mathematics) , shear thinning , generalized newtonian fluid , physics , magnetic field , rheology , thermodynamics , shear rate , quantum mechanics
This paper presents a numerical study for the unsteady flow of a magnetohydrodynamic (MHD) Sisko fluid in annular pipe. The fluid is assumed to be electrically conducting in the presence of a uniform magnetic field. Based on the constitutive relationship of a Sisko fluid, the non‐linear equation governing the flow is first modelled and then numerically solved. The effects of the various parameters especially the power index n , the material parameter of the non‐Newtonian fluid b and the magnetic parameter B on the flow characteristics are explored numerically and presented through several graphs. Moreover, the shear‐thinning and shear‐thickening characteristics of the non‐Newtonian Sisko fluid are investigated and a comparison is also made with the Newtonian fluid. Copyright © 2009 John Wiley & Sons, Ltd.