Significance of suction and dual stretching: Comparative analysis between the dynamics of water-based alumina nanoparticle aggregation with water-based cupric nanoparticle aggregation

Abstract

Suction and dual-stretching are valuable tools for influencing not only heat transfer but also friction. However, nothing is known about the impact of nanoparticles’ volume fraction and aggregation. This report focuses on the significance of suction and dual stretching on the dynamics of water-based alumina nanoparticle aggregation and water-based cupric nanoparticle aggregation using the Maxwell-Bruggeman model. The governing equation that models the transport phenomenon mentioned above is presented, non-dimensionalized, and parameterized. The numerical solutions of the set of equations that are unitless were obtained using the Matlab package - bvp4c. Increasing suction and dual stretching are a yardstick to decline local skin friction coefficients proportional to heat transfer rate but cause Nusselt number proportional to the heat transfer rate. The rate of decrease in the local skin friction coefficients proportional to the friction is maximum in the transport phenomenon of water conveying alumina nanoparticles. The temperature distribution across the transport phenomena is a decreasing property of (a) Prandtl number, (b) dual stretching, (c) fractal index, and (d) maximum volume fraction of nanoparticles. The reverse is the case of volume fraction as it boosts the temperature distribution. The velocity functions are decreasing properties of radii of aggregates and nanoparticles, volume fraction, and suction.