Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
STUDY OF NATURAL CONVECTION IN HEAT SINKS USING COMSOL
Submission Author:
Sandro Metrevelle Marcondes de Lima e Silva , MG , Brazil
Co-Authors:
Vilson Altair da Silva, Ana Silva, Sandro Metrevelle Marcondes de Lima e Silva
Presenter: Vilson Altair da Silva
doi://10.26678/ABCM.ENCIT2018.CIT18-0653
Abstract
Heat sinks are usually made of aluminum or copper and aim at maximizing the heat transfer. Heat sinks are used in a variety of devices; mainly electronics that require these devices to keep them in operating temperatures.in this paper the heat transfer by natural convection in transient and permanent regimes was studied in heat sinks with flat rectangular fins. Experimental and numerical analyzes, made in the COMSOL Multiphysics 5.2, were carried out to determine the ideal number and positioning of the sensors used to measure the temperature in the heatsinks. The choice of domains of the simulation faithfully followed what was done in the experimental tests. The main input variable of the simulation was the heat flux generated by the resistive heater. The study response, used to compare the experimental test and the simulation, was the final temperature at the tip of the fin after the state was reached.
Keywords
Heat sinks, Natural Convection, Experimental and Numerical Studies, COMSOL
