Abstract
The current investigation may be utilized significantly in the modern industrial technologies to provide better cooling environment in the outer surface as well as micro scale level such as blood transportation, lubrication, wind velocity measurement, wire coating, and aerodynamics etc. The present problem explores the various aspects of natural convection flow and heat transfer of micropolar hybrid nanofluid. The fluid flow is taken for horizontal, inclined and vertical positions of moving thin needle under quadratic thermal radiation effects. The governing equations are non-dimensionalized by using relevant similarity transformations. BVP4C in MATLAB use these equations to obtain the required solutions. These solutions help in analysing the important aspects of the flow i.e., velocity, microrotation, temperature, skin friction and Nusselt number profiles for different parameters utilizing graphical representation. From these results we observe that velocity of the fluid velocity has been declined with rise in magnetic parameter. The reverse trend is the result for temperature profile in response to Sundry radiation parameter. Further, heat transfer rate is intensified at all positions of moving thin needle subject to power law variation of surface heat flux than power law variation of wall temperature.
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