Significance of viscous dissipation on the dynamics of ethylene glycol conveying diamond and silica nanoparticles through a diverging and converging channel

Abstract

The enhancement of heat transfer in a new kind of hybrid nanofluid is more than that of a single nanoparticle. Also, the thermal conductivity of diamond, silver and gold is more than that of copper, titanium oxide and alumina. Hence, an attempt is made to study the influence of hybrid nanoparticles (diamond and silica) with ethylene glycol as a base fluid in a diverging/converging channel. Using similarity analysis, the governing system of equations is transformed to a set of nonlinear ODEs. The resulting system is evaluated computationally by using the most powerful shooting procedure with the support of MATLAB software. The influence of (diamond and silica-ethylene glycol) hybrid nanomaterial on various thermofluidic parameters in a Jeffery–Hamel channel is investigated. The outcomes of this work conclude that (1) the fluid flow velocity decreases in divergent channels with increasing Reynolds number and nanoparticle volume fraction. (2) The skin friction coefficient is found to be a rising function of diamond nanoparticles in the presence of the ethylene glycol-based fluid for divergent channel.