Case Studies in Thermal Engineering (Sep 2023)
Thermal investigation of nanofluid-filled hexagonal fillet cavity under the influence of heated and concentered cylinder
Abstract
The incorporation of nanoparticles is very advantageous to address the challenges of heat transmission in numerous industrial frameworks. Double-diffusive Natural Convection (DDNC) is a key component of large-scale industrial manufacturing processes, including chemical processing, heat exchangers, and cooling systems. Understanding and optimizing DDNC can enhance process efficiency, reduce energy consumption, and improve product quality. The prime motive of current disquisition is to explicate enhancement in thermal attributes of ordinary water by adding MWCNT's saturated in hexagonal enclosure. A circular heated and concentrated cylinder is placed at the center to generate optimize thermal and concentration gradients. Additionally, magnetic field of uniform strength is applied horizontally to the domain. Problem formulation containing thermophysical relation of inducted nanoparticles are well established and solved numerically by finite element method. Outcomes of involved sundry parameters like, Rayleigh, Hartmann, Lewis numbers are displayed through snapshots. Through observation, it has been noted that the velocity field demonstrates a rising trend in the hydrodynamic case (Ha=0) in contrast to the hydromagnetic case (Ha≠0), as indicated by the stream function's magnitude. More specifically, the maximum value of 〖| |ψ|max reaches 9.8 in the absence of a magnetic field, while it decreases to 3.8 when a magnetic field is present.
