Abstract
Radiation in dissipative flow of hybrid nanofluid (TiO2 + Pb/water) bounded between two coaxial cylinders is addressed. The hybrid nanomaterial is synthesized by adding nanoparticles lead and titanium dioxide (TiO2 and Pb) in water as conventional fluid. Geometrically the outer cylinder exhibits rotation and the inner cylinder fixed. Constant strength magnetic field is taken radially. Thermal radiation and viscous dissipation describe heat transfer analysis. Mathematical equations (continuity, momentum, and energy) are obtained via mathematical modeling. Bvp4c method is used for solutions development. Influences of flow and heat related parameters on skin friction, velocity, temperature and Nusselt number have been shown. Velocity of fluids (hybrid nanofluid and nanofluid) is controlled by higher magnetic parameter while temperature and skin friction intensifies with it. Higher nanoparticle volume fractions (for both nanoparticles) reduce velocity while skin friction and Nusselt number are intensified. Moreover, higher radiation param-eter causes temperature drop. In comparative analysis, the effects of hybrid nanofluid (TiO2 + Pb/water) are dominant when compared with nanofluid (TiO2 + water).(c) 2023 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).