Influence of variable thermal conductivity and mixed convection on hybrid nanofluid (SWCNT + MWCNT/H 2 O) flow over an exponentially elongated sheet with slip conditions

Slip condition plays a significant role in many heat transfer phenomena such as cleaning microheat exchangers, mechanical heart valve cleaning, and inner cavity polishing. The present study is carried out on the numerical analysis of steady mixed convection (SWCNT + MWCNT/ H 2 O) hybrid nanofluid flow with slip boundary conditions in the presence of variable thermal conductivity, heat generation and thermal radiation via an exponentially extending sheet. By using the proper exponential similarity transformations, a nonlinear coupled ordinary system is obtained from the coupled partial differential system. The generated ordinary differential systems are resolved using the MATLAB software. Physical characteristics, such as the mixed convection parameter (λ), the velocity slip (A), the thermal slip (B), and the heat generation (Q H ), that have an impact on temperature, Nusselt number, and velocity field, are shown in graphical and tabular representations. The enhancement of suction and velocity slip causes a reduction in the velocity profile. The findings of the thermal slip test against stretching sheet show that hybrid nanofluid improves the rate of heat transmission by 4.33% when compared to nanofluid.