Flow of a radioactive Casson fluid through a deformable asymmetric porous channel
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 4 September 2017
Abstract
Purpose
The purpose of this study is to investigate numerically the influence of nonlinear thermal radiation on the flow of a viscous fluid. The flow is confined in a channel with deformable porous walls.
Design/methodology/approach
Two numerical schemes, namely, Galerkin’s method (GM) and Runge–Kutta–Fehlberg (RKF) method have been used to obtain solutions after reducing the governing equations to a system of nonlinear ordinary differential equations.
Findings
Heat transfer rate falls at the upper wall owing to the decreasing values of the permeability parameter. However, at the lower wall, the same rate rises. Increment in θw increases the rate of heat transfer at both walls. Nusselt number also increases with the increasing values of Rd. Rd also uplifts the temperature distribution, except for the case where it falls near the lower wall owing to the contraction coupled with injection.
Originality/value
It is confirmed that the presented work is original.
Keywords
Acknowledgements
The authors are highly grateful to the unknown referees for the valuable comments.
Citation
Mohyud-Din, S.T., Ahmed, N. and Khan, U. (2017), "Flow of a radioactive Casson fluid through a deformable asymmetric porous channel", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 27 No. 9, pp. 2115-2130. https://doi.org/10.1108/HFF-09-2016-0339
Publisher
:Emerald Publishing Limited
Copyright © 2017, Emerald Publishing Limited