Numerical study of metal foam heat sinks under uniform impinging flow

34th UIT Heat Transfer Conference 2016

Andreozzi, A.^1 ; Bianco, N.^1 ; Iasiello, M.^1 ; Naso, V.^1

Dipartimento di Ingegneria Industriale, Università degli Studi di Napoli Federico II, P.le Tecchio 80, Napoli

80125, Italy^1

关键词: Commercial software;    Comsol multiphysics;    Convective heat transfer Coefficient;    Innovative approaches;    Management challenges;    Open-cell metal foams;    Performance improvements;    Thermal Performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/796/1/012002/pdf
DOI  :  10.1088/1742-6596/796/1/012002

来源: IOP

【 摘 要 】

The ever-increasing demand for performance improvement and miniaturization of electronics has led to a significant generation of waste heat that must be dissipated to ensure a reliable device operation. The miniaturization of the components complicates this task. In fact, reducing the heat transfer area, at the same required heat rate, it is necessary to increase the heat flux, so that the materials operate in a temperature range suitable to its proper functioning. Traditional heat sinks are no longer capable of dissipating the generated heat and innovative approaches are needed to address the emerging thermal management challenges. Recently, heat transfer in open-cell metal foams under an impinging jet has received attention due to the considerable heat transfer potential of combining two cooling technologies: impinging jet and porous medium. This paper presents a numerical study on Finned Metal Foam (FMF) and Metal Foam (MF) heat sinks under impinging air jet cooling. The analysis is carried out by means of the commercial software COMSOL Multiphysics®. The purpose is to analyze the thermal performance of the metal foam heat sink, finned or not, varying its geometric parameters. Results are presented in terms of predicted dissipated heat rate, convective heat transfer coefficient and pressure losses.