THERMO-FLUID ANALYSIS OF MINI-CHANNEL HEAT SINKS FOR HIGHT FLUX DISSIPATION
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-01-01 |
| Authors | Nabil Bessanane, Mohamed SiāAmeur, Mourad Rebay |
| Institutions | UniversitƩ de Reims Champagne-Ardenne, University of Batna 1 |
Abstract
Section titled āAbstractāPin-fins are frequently used to increase the heat transfer surface and promote turbulent mixing in the heat sinks. Their application in electronic cooling, as well as in high concentrated solar conversion or high beam light radiation (like in the synchrotron particles accelerator), has boosted their extensive studies in the last decade. The present study is a numerical investigation of flow and heat transfer in rectangular mini-channels (RMC) and pin-fin heatsinks (PFHS). The pin-fins have a diamond shape arranged in segregated disposition (corrugated channel). Comparison with the experimental results has shown that the numerical method based on realizable k-Īµ model can approach with acceptable accuracy the heat transfer rate and pressure drop in the heat sinks for water flow. Flow field and heat transfer quantities are carefully analyzed around each pin-fin (heat flux density, wall and bulk fluid temperatures, local heat transfer coefficient on each face around the pin-finā¦). It has been shown that sharp analysis of local fluid flow behavior and heat transfer quantities allows to accurate predict not only the global pressure drop and heat transfer coefficient, but also the local overheating which may lead to thermo-mechanical damage and failure of the thermal systems.