Heat and Mass Transfer Analysis in Hiemenz Flow of Nanofluid Infused With Carbon Nanotubes in a Micropolar Fluid Model

Carbon nanotubes (CNTs) have garnered a lot of interest lately since they are thought to be among the most promising novel materials for a variety of technological uses. The study of CNTs in a micropolar fluid model provides a path to significantly improve the mechanical properties of biodegradable nanocomposites in tissue engineering. In view of this, the present article focuses on the mass and heat transport analysis of the stagnation‐point flow of micropolar nanofluid across a stretching/shrinking sheet. Also, the single‐walled carbon nanotubes (SWCNTs) and multiwalled carbon nanotubes (MWCNTs) in the fluid flow are analyzed. Additionally, the influence of suction/injection, gyration velocity, and velocity slip conditions on the fluid flow is considered. The governing partial differential equations are converted into ordinary differential equations (ODEs) using similarity variables. Furthermore, the ODEs are solved using the exact method. The behavior of velocity, temperature, and concentration profiles for various parameters is depicted with the graphical representation. The comparison of MWCNT and SWCNT for various parameters, including velocity, thermal, and concentration profiles, is provided. The derived exact solutions offer a single solution for the sheet elongation case, whereas the sheet dwindling case offers two solutions in a particular region. It is mainly observed that the linear velocity profile is lowered by velocity slip. The concentration profile decelerates for escalating values of chemical reaction and Schmidt number. These findings seek applications in biochemistry, such as biosensors, increased drug lifespan, and tissue engineering.