A new thermal conductivity model of CNTs/C2H6O2–H2O hybrid base nanoliquid between two stretchable rotating discs with Joule heating

Abstract

Here, CNTs/C2H6O2–H2O hybrid base nanoliquid flow between two stretchable rotating discs is discussed. Significant mechanism i.e. homogenous and heterogeneous reactions effects are retained. Further impact of Joule heating, viscous dissipation and non-linear thermal radiation are also discussed. The flow and concentration as well as heat transfer are governed by the momentum and energy equations and are reduced to the non-linear system of ordinary differential equations using suitable non-dimensional variables. We have evaluated this system of non-linear ordinary differential equations numerically by using Maple −18 software. Our analysis indicates that the Nusselt number is the increasing function of Reynolds number ((Formula presented.)), Eckert number (Formula presented.) and it decreases only for stretching parameter (Formula presented.). At the upper disc, the surface drag force is the increasing function of Reynolds number ((Formula presented.)), magnetic parameter (Formula presented.) and it decreases for the rotational parameter (Formula presented.). Also, SWCNT has a higher thermal field than MWCNT.