Journal
RESULTS IN PHYSICS
Volume 9, Issue -, Pages 121-134Publisher
ELSEVIER
DOI: 10.1016/j.rinp.2018.02.014
Keywords
Nonlinear thermal radiation; Variable viscosity; Porous medium; Soret and Dufour effects; Peristalsis
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The radiative heat and mass transfer in wall induced flow of hydromagnetic fluid through porous medium in an asymmetric channel is analyzed. The fluid viscosity is considered temperature dependent. In the theory of peristalsis, the radiation effects are either ignored or taken as linear approximation of radiative heat flux. Such approximation is only possible when there is sufficiently small temperature differences in the flow field; however, nonlinear radiation effects are valid for large temperature differences as well (the new feature added in the present study). Mathematical modeling of the problems include the complicated system of highly nonlinear differential equations. Semi-analytical solutions are established in the wave reference frame. Results are displayed graphically and discussed in detail for the variation of various physical parameters with the special attention to viscosity, radiation, and temperature ratio parameters. (C) 2018 The Authors. Published by Elsevier B.V.
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