Akademik Veri Yönetim Sistemi
Journal of Thermal Analysis and Calorimetry, 2025 (SCI-Expanded)
This paper describes a numerical investigation focusing on the free convection of fluid and heat transfer within different cases of a cavity housing two cold cylinders with a number of fins, and containing a heat source located at the bottom. 3 enclosure configurations were examined by exploring investigation on the influence of multiple parameters such as the Rayleigh number (103 ≤ Ra ≤ 106), the nanoparticles solid volume fraction (0% ≤ ϕ ≤ 4%), and the different geometrical cases, by adding several fins and taking into account the nanoliquid flow, heat transfer and entropy generation inside the incinerator shaped cavity. Nanoliquid properties of effective thermal conductivity and viscosity were predicted by the Koo-Kleinstreuer-Li correlation in which Brownian motion was accounted for. The finite element method was used as a computational method, for equation discretization and problem simulation. The output of the investigation led to the fact that heat transfer variates from geometry without fins (Case 1) to the configuration with 17 fins (Case 3) describing the effect of adding a number of fins(0 ≤ N ≤ 17) on fluid flow, heat transfer, and entropy generation. Cases 1 and 2 exhibited a significant difference at Ra = 105. In contrast, Case 3 showed no noticeable change in heat transfer values or entropy generation compared to Case 2, even when accounting for Brownian motion. The findings provide valuable insights for optimizing cavity geometry to enhance thermal management and overall performance.