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Title: Computational dynamics of unsteady flow of a variable viscosity reactive fluid in a porous pipe
Authors: Chinyoka, Tiri 
Makinde, Oluwole Daniel 
Keywords: Unsteady flow;Porous pipe;Variable viscosity;Arrhenius reaction;Finite difference method
Issue Date: 2010
Publisher: Elsevier
Source: Chinyoka, T. & Makinde, O.D. (2010). Computational dynamics of unsteady flow of a variable viscosity reactive fluid in a porous pipe. Mechanics Research Communications, 37(3): 347–353
Abstract: The coupled nonlinear equations in cylindrical Cartesian coordinates governing pressure-driven unsteady flow of a reactive variable viscosity fluid and heat transfer in a circular pipe whose walls are porous, are derived and solved numerically using a semi-implicit finite difference scheme under axisymmetric conditions. The boundary conditions along the centerline of the pipe are rebuilt via an assumption on the continuity of derivatives at each stage of the computation and results are validated against the results obtained using well documented boundary conditions for flow with no suction/injection. The chemical kinetics is assumed to follow Arrhenius rate law while the fluid viscosity is an exponentially decreasing function of temperature. Both numerical and graphical results are presented and discussed quantitatively with respect to various parameters embedded in the problem.
ISSN: 0093-6413
Appears in Collections:Eng - Journal articles (DHET subsidised)

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