Abstract
The aim of the current study is to analyze the flow and heat transport mechanism in carbon nanotubes (CNTs) in the suspended nanofluids flow due to a thin needle. The influence of MHD, activation energy, and thermal radiation are also incorporated while developing boundary layer equations governing the nanofluid flow. The governing partial differential equations (PDEs) problem are reduced into a set of nonlinear ordinary differential equations (ODEs) using an appropriate similarity transformation and then computed numerically through the Runge-Kutta-Fehlberg fifth-order (RKF-5) numerical method with a shooting scheme. The sway of significant parameters on velocity, temperature, and concentration evaluations are examined in detail, and the results are shown graphically. The quantities of physical interest, such as local skin friction coefficient, local Nusselt number, and local Sherwood number, are also investigated for pertinent parameters. When the size of needle thickness expands, the surface drag force increases for single- and multi-wall carbon nanotubes. Furthermore, heat transfer rate enhances by rising values of Eckert number for first and second branch solutions. The results also revealed that the higher values of the chemical reaction parameter diminish the concentration distribution for both solutions.