Cooling analysis of a light emitting diode automotive fog lamp

Matej Zadravec (Author), Matjaž Ramšak (Author), Jure Ravnik (Author), Matjaž Hriberšek (Author), Jernej Slanovec (Author)

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

prenos toplote;hlajenje elektronskih naprav;hladilna rebra;svetleče diode;avtomobilska luč;stisljivi tokovi;heat transfer;cooling of electronic devices;cooling fins;light emitting diode automotive lamp;compressible flow;

Data

Language:	English
Year of publishing:	2017
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
UDC:	536:532
COBISS:	20476182
ISSN:	0354-9836
Views:	955
Downloads:	341
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	prenos toplote;hlajenje elektronskih naprav;hladilna rebra;svetleče diode;avtomobilska luč;stisljivi tokovi;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 757-766
Volume:	ǂVol. ǂ21
Issue:	ǂno. ǂ1B
Chronology:	2017
DOI:	10.2298/TSCI140829140Z
ID:	10847226