Transportation of heat generation/absorption and radiative heat flux in homogeneous–heterogeneous catalytic reactions of non-Newtonian fluid (Oldroyd-B model)

J Wang, MI Khan, WA Khan, SZ Abbas… - Computer Methods and …, 2020 - Elsevier
Computer Methods and Programs in Biomedicine, 2020Elsevier
Background This study addresses the three-dimensional (3D) stagnation point flow of non-
Newtonian material (Oldroyd-B) with magnetohydrodynamics. Furthermore, Ohmic heating
and radiative flux are used in the modeling of energy expression. The surface is convectively
heated. Equal strengths of diffusions for homogeneous and heterogeneous reactions are
counted. Results are computed and presented graphically. Heat transfer rate is numerically
discussed through table. Method Here the nonlinear differential system first converted into …
Background
This study addresses the three-dimensional (3D) stagnation point flow of non-Newtonian material (Oldroyd-B) with magnetohydrodynamics. Furthermore, Ohmic heating and radiative flux are used in the modeling of energy expression. The surface is convectively heated. Equal strengths of diffusions for homogeneous and heterogeneous reactions are counted. Results are computed and presented graphically. Heat transfer rate is numerically discussed through table.
Method
Here the nonlinear differential system first converted into ordinary differential equation through implementation of appropriate similarity variables. The obtained ordinary system is tackled through homotopy technique for convergent solutions. The outcomes are presented through different graphs and discussed in section six.
Outcomes
The remarkable results of the present communication which is obtained from the semi analytical method i.e., “homotopy method” is summarized as
(i) Opposite impact is noticed for velocity components i.e., (f′(ξ), g(ξ)) for rising fluid parameter and rotation parameter.
(ii) The temperature is direct relation with Biot number and radiative variable.
(iii) Heat transfer rate is more versus Biot number and radiation variable.
(iv) The concentration field shows opposite impact versus homogeneous and heterogeneous parameters.
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