, Abderrahmane Elmeriah 2
, Seddik Taieb 3
, Driss Nehari 4
, Faiza Chouli 5
2Department of Mechanical Engineering, Faculty of Sciences and Technology, University of Mustapha Stambouli Mascara, BP 305 Route de Mamounia, Mascara, 29000, Algeria
3Laboratory of Quantum Physics and Mathematical Modeling of the Material (LPQ3M), University of Mascara, Mascara, 29000, Algeria
4Department of Mechanical Engineering, Route Sidi Bel Abbes, BP 284, University of Ain Temouchent, Ain Temouchent, 46000, Algeria
5LMAE Laboratory, Department of Process Engineering, Faculty of Sciences and Technology, University of Mustapha Stambouli Mascara, BP 305 Route de Mamounia, Mascara, 29000, Algeria
Abstract
This numerical study examines heat transfer phenomena, with particular focus on evaluating the cooling performance of embedded cavity technologies for electrical and electronic enclosure applications. The thermo-fluidic characteristics of laminar flow within a confined cavity bounded by isothermal heat sources were analyzed by experimentally measuring thermophysical of premixed binary fluids comprising water and ethylene glycol (EG) at concentrations ranging from 25% to 100%. The Navier-Stokes equations governing this steady-state open system are solved numerically using the finite volume method implemented in the commercial computational fluid dynamics (CFD) software Ansys Fluent v17. This computational approach enables precise determination of convective heat transfer characteristics during the cooling process. Key results are presented in terms of the mixture’s surface-averaged Nusselt number, total Nusselt number, and cooling efficiency within the cavity at various ethylene glycol concentrations (25-100%). Comparative analysis reveals that ethylene glycol coolant exhibits significantly superior cooling performance compared with pure water. This enhancement is demonstrated by progressive increases in both the total Nusselt number (from 11.5 to 14.8, 16.5, 21.8, and 35.9) and in cooling efficiency (from 87.4% to 92%, 95.2%, 97%, and 98.3%), corresponding to ethylene glycol concentrations of 25%, 50%, 75%, and 100%, respectively. Furthermore, enhanced thermo-fluidic behavior is consistently observed with increasing ethylene glycol content.
