© MAR 2022 | IRE Journals | Volume 5 Issue 9 | ISSN: 2456-8880 IRE 1703227 ICONIC RESEARCH AND ENGINEERING JOURNALS 46 Numerical Approach to Determine the Simultaneous Influence of Thermal Radiation and Chemical Reaction Over MHD Stagnation-Point Flow of Sisko Nanofluid A.A. HUSSAINI 1 , ISAH ABDULLAHI 2 , ADAMU ABDULKADIR TATA 3 , ALI MUSA 4 1, 2 Department of Mathematical Sciences, Abubakar Tafawa Balewa University, Bauchi, Nigeria. 3 Department of Mathematics and Statistics, Federal Polytechnic Bauchi, Bauchi, Nigeria 4 Department of Mathematics and Statistics, Yobe State University, Damaturu, Nigeria. Abstract- In this research a numerical investigation is performed to show the effects of thermal radiation and chemical reaction on the hydro magnetic stagnation-point flow of Sisko nanofluid over a linearly stretching sheet by considering viscous dissipation and Joule heating with suction/injection. A suitable set of similarity transformations is considered in order to convert the basic partial differential equations into a set of coupled nonlinear ordinary differential equations. An efficient numerical method along with shooting technique is involved in order to solve the reduced governing basic equations. The influences of several emerging physical parameters of Sisko nanofluid on the profiles of velocity, temperature, solutal concentration, nanoparticle volume fraction, skin friction coefficient, Nusselt number, and Sherwood number have been studied and analyzed in detail through graphs and tables. It is found that the skin friction coefficient decays more rapidly against the material parameter of Sisko fluid. Also, it is noticed that the Brownian motion and thermophoresis parameter have the reverse effects on Sisko nanofluid Sherwood number. It is analyzed that the Nusselt number decreases with an increase in the values of thermophoresis parameter, Brownian motion parameter, and Eckert number, while its value increases with material parameter and DuFour solutal Lewis number. It is observed that the Sherwood number has ascending behavior for thermophoresis and, Brownian motion parameters, whereas nanofluid Sherwood number gets amplified with a hike in the Nano Lewis number parameter for all the values of Brownian motion parameter. I. INTRODUCTION The studies on heat and mass transfer with the non- Newtonian fluid have taken a vital role in the modern technology and industrial applications, such as heat exchangers, petroleum reservoirs, material process system, molten plastic products, wall paint, food products, lubricant oil, greases, etc. Various mathematical models were developed in the past to explain the characteristics of the non- Newtonian fluids, but those may not alone describe all the capabilities of the non-Newtonian fluids present in nature. To overcome some of the limitations: Sisko et al. 1958 introduced a three-parameter Sisko fluid model, with which we can examine the cases of shear- thinning and shear-thickening characteristics of the fluid. Nanofluid was first employed by Choi 1955 and is proficient in various industrial applications, such as it can be used as a coolant in nuclear reactors and hybrid-powered engines, microchips in computers, and mostly used in the field of current nanotechnologies. Other related researchers are Macha et al, 2017, Eid et al. 2008, Mahny et al. 2018 and Jawad et al. 2019, It has been found from previous studies that nanofluids can retain micro/millimeter- sized particles with dimensions smaller than 100 nm. Moreover, it may contain various types of nanoparticle like metallic, nonmetallic, oxides, CNTs (carbon nanotubes) or carbides, etc. With different base fluids like ethylene glycol, water, engine oil, etc. The addition of nanoparticles in the base fluids can boost up the thermal conductivities of the functioning fluids. The two important mechanisms of the nanoparticles are the Brownian and thermophoresis behavior. Among several non-Newtonian models, Sisko fluid model showed awesome achievements due to its huge