Adomain computation of radiative-convective bi-directional stretching flow of a magnetic non-Newtonian fluid in porous media with homogeneous-heterogeneous reactions

Mishra, SR, Shamshuddin, MD, Beg, OA ORCID: https://orcid.org/0000-0001-5925-6711 and Kadir, A 2020, 'Adomain computation of radiative-convective bi-directional stretching flow of a magnetic non-Newtonian fluid in porous media with homogeneous-heterogeneous reactions' , International Journal of Modern Physics B, 34 (18) , p. 2050165.

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Access Information: Electronic version of an article published as International Journal of Modern Physics B, Volume 34, Issue 18, 2020, pp. 2050165 https://doi.org/10.1142/S0217979220501659 © World Scientific Publishing Company http://www.worldscientific.com/worldscinet/ijmpb

Abstract

In the present communication, laminar, incompressible, hydromagnetic flow of an electrically conducting non-Newtonian (Sisko) fluid over a bi-directional stretching sheet in a porous medium is studied theoretically. Thermal radiation flux, homogeneous-heterogeneous chemical reactions and convective wall heating are included in the model. Darcy’s model is employed for the porous medium and Rosseland’s model for radiation heat transfer. The governing partial differential equations for mass, momentum, energy and concentration are reduced into ordinary differential equations via similarity transformations. The resultant nonlinear ordinary differential equations with transformed boundary conditions are then solved via the semi-analytical Adomain decomposition method (ADM). Validation with earlier studies is included for the non-radiative case. Extensive visualization of velocity, temperature and species concentration distributions for various emerging parameters is included. Increasing magnetic field and inverse permeability parameter are observed to decelerate both the primary and secondary velocity magnitudes whereas they increase temperatures in the regime. Increasing sheet stretching ratio weakly accelerates the primary flow throughout the boundary layer whereas it more dramatically accelerates the secondary flow near sheet surface. Temperature is consistently reduced with increasing stretching sheet ratio whereas it is strongly enhanced with greater radiative parameter. With greater Sisko non-Newtonian power-law index the primary velocity and temperature are decreased whereas the secondary velocity is increased. Increasing both homogenous and heterogenous chemical reaction parameters is found to weakly and more strongly, respectively, deplete concentration magnitudes whereas greater Schmidt number enhances them. Primary and secondary skin friction and Nusselt number profiles are also computed. The study is relevant to electro-conductive (magnetic polymer) materials processing operations.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: International Journal of Modern Physics B
Publisher: World Scientific
ISSN: 0217-9792
Related URLs:
Depositing User: OA Beg
Date Deposited: 20 May 2020 07:35
Last Modified: 05 Aug 2020 10:30
URI: http://usir.salford.ac.uk/id/eprint/57061

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