Micropolar Fluid Enfolded with Viscous Nanofluid: Three-Layer Flow

This paper aims to discuss the flow and heat transfer characteristics of micropolar fluid enveloped with nanofluid at the top and bottom layers in a horizontal avenue. Eringen and Tiwari-Das models are restored to characterize the micropolar and nanofluids, respectively. Exact analytical solutions are obtained after non-diamensionlizing the balanced law equations through relevant boundary and interface conditions. The effect of model parameters like material parameter, solid volume fraction, Eckert number, nanoparticles on the linear velocity, microrotation velocity, and temperature is illustrated. The result shows that the boost in the material parameter declines the linear velocity and temperature, whereas the nanoparticle concentration in the base fluid lowers the linear velocity and develops the temperature fields. The cell rotation viscosity reduces the velocity for any value of material parameter. The Nusselt values are not much influenced by different nanoparticles.