The influence of multiple fins arrangement cases on heat sink efficiency of MHD MWCNT-water nanofluid within tilted T-shaped cavity packed with trapezoidal fins considering thermal emission impact

Abstract

This paper explores numerically the MHD heat transfer of MWCNT nanoliquid inside a T-shaped cavity fitted with trapezoidal equidistant fins under thermal radiation effects. The simulation model is done with the help of the program Comsol Multiphysics. The function of several parameters is investigated, including Rayleigh and Hartmann quantities, as well as emission factors and trapezoidal fins height. In addition, for various cavity tilt angle, the influence of various fin arrangement cases on heat transfer efficiency is addressed. The important findings show that increasing the number of Rayleigh, as well as the radiation parameter, improves the flow of convection heat flow. The influence of Lorentz powers on weakening convective heat exchange is reduced when the impact of thermal emission is present. Moreover, rising the height of the trapezoidal fins increases the convective flow. Among the various trapezoidal fins arrangements, the average Nusselt limit is obtained with case 4 in the case of horizontal cavity γ = 0°. On the other hand, depending on the cavity tilt angles, the best trapezoidal fins arrangements for the most efficient heat transfer changes.