Temperature-dependent viscosity effect on forced convective CH3OH–Fe3O4 nanofluid flow through annular duct

Abstract

The importance of Methanol can be guessed from its usage as in the preparation of methyl tertiary butyl ether (MTBE) fuel, ascetic acid, formaldehyde, metabolize food, biodiesel, pharmaceutical ingredients and products, energy related applications and many more. In this research work, we numerically analyze the impact of temperature-dependent viscosity on flow and heat transfer of Methanol Iron oxide, CH3OH–Fe3O4 nanofluid through annular sector duct. The effects of pertinent parameters corresponding to temperature-dependent viscosity, m, Fe3O4 nanoparticles’ contribution, n and geometrical configuration (i.e. [Formula: see text] and N), are revealed graphically by velocity contours, isotherms, velocity and temperature profiles, and discussed physically. Both parameters m and n suppress the velocity and temperature profiles by increasing the friction factor [Formula: see text] and average Nusselt number [Formula: see text]. Same impacts of m and n have been observed for all values of [Formula: see text] and N.