THERMAL SCIENCE

International Scientific Journal

Matej Zadravec

,

Matjaz Ramšak

,

Jure Ravnik

,

Matjaž Hriberšek

,

Jernej Slanovec

COOLING ANALYSIS OF A LIGHT EMITTING DIODE AUTOMOTIVE FOG LAMP

ABSTRACT
Efficiency of cooling fins inside of a light emitting diode fog lamp is studied using computational fluid dynamics. Diffusion in heat sink, natural convection and radiation are the main principles of the simulated heat transfer. The Navier-Stokes equations were solved by the computational fluid dynamics code, including Monte Carlo radiation model and no additional turbulence model was needed. The numerical simulation is tested using the existing lamp geometry and temperature measurements. The agreement is excellent inside of few degrees at all measured points. The main objective of the article is to determine the cooling effect of various heat sink parts. Based on performed simulations, some heat sink parts are found to be very ineffective. The geometry and heat sink modifications are proposed. While radiation influence is significant, compressible effects are found to be minor.
KEYWORDS
heat transfer, cooling of electronic devices, cooling fins, LED automotive lamp, compressible flow
PAPER SUBMITTED: 2014-08-29
PAPER REVISED: 2016-06-09
PAPER ACCEPTED: 2016-06-09
PUBLISHED ONLINE: 2016-07-12
DOI REFERENCE: https://doi.org/10.2298/TSCI140829140Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 1, PAGES [757 - 766]
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Cooling analysis of a light emitting diode automotive fog lamp

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence