Thermal performance of hybrid base fluid saturated by SWCNTs using length and radius dependent thermal conductivity: Investigation for thermal radiated nanofluid

Abstract

The CNTs is an interesting nanomaterials which attained much attention of the researchers. The unique structure of SWCNTs highly alter the performance of fluids saturated by SWCNTs. The base fluid's thermal conductivity enhanced via SWCNTs TCM having $3\mu m\le L\le 70\mu m$ and $10.0nm\le d\le 40.0nm$ where $R=\frac{d}{2}$ is the radius. Hence, the current attempt focuses on the performance of [(C₂H₆O₂-H₂O) 50:50%]/SWCNTs under additional influences of the constraints. The setup is considered through spherical surface with special emphasize on the solar radiation effects. The model nanofluid model developed, investigated numerically and spotlight the key results with comprehensive discussion. It is examined that the velocity increased by optimizing the unsteadiness ($A=0.1,0.2,0.3,0.4$) in the fluid while the SWCNTs concentration ($\varphi =0.01,0.02,0.03,0.04$) resist the motion due to considerable viscous and density effects. The significant increase in the thermal behavior is observed for solar radiations ($Rd=0.1,0.2,0.3,0.4$) when the concentration is taken up to $0.04$. These factors would help to acquire the desired temperature by minimizing the SWCNTs amount. The SF enlarges for larger rotational number while rate of thermal rate augmented for more unsteady flow.