Determination of Heat Exchange Rate by A Triangular Heat Generating Conductive Body in an Enclosure Using CFD

Abstract

This paper performs a numerical analysis of the conjugate heat exchange inside a square enclosure full of a copper-water nanofluid. The enclosure also contains a heat-generating solid triangular block (a source of heat) at the center. While the horizontal walls of the enclosure are viewed as adiabatic, its perpendicular walls are Kept up at a consistently low temperature. The second order upwind scheme is used for convective term and SIMPLE algorithm, to lead the numerical analysis and solve the discrete equations using the commercial software FLUENT15.0. The consequences of the numerical investigations are then used to clear up the effect of relevant factors, e.g. Rayleigh number, solid-volume proportion, thermal conductivity of the source of heat and transfer of heat. The result is accounted in terms of streamlines, isotherms, velocity and temperature profiles over the enclosure, and local and average Nu numbers. As per my findings, the growth of Rayleigh number and the solid volume fraction enhance the thermal performance of the enclosure. At last, the higher thermal conductivity of the source of heat is related to increases in the temperature of the nanofluid in the enclosure, the temperature of the source of heat, and the average Nu.