Thermal Performance Analysis and Optimization of Microjet Cooling of High-Power Light-Emitting Diodes

Title
Thermal Performance Analysis and Optimization of Microjet Cooling of High-Power Light-Emitting Diodes
Authors
김광용
Issue Date
2013
Publisher
JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
Series/Report no.
JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER; vol.27 no.2 startpage 235 endpage 245
Abstract
The present study investigates the thermal and hydraulic performance of the microjet array cooling system for thermal management of a high-power light-emitting diode array. Three-dimensional numerical analyses were performed for steady incompressible turbulent flow and conjugate heat transfer through a finite volume solver. The performances of several microjet array configurations, viz., 1-jet, 4-jet, 9-jet, 13-jet, and 16-jet arrays, were analyzed at two flow rates and top-cavity heights. The design optimization of a 4-jet array cooling system was performed using a multi-objective evolutionary algorithm. For the optimization, two design variables, viz., ratio of the nozzle diameter and height of the top cavity and ratio of the height and length of the top cavity, were selected. The thermal resistance and pressure drop were selected as the objective functions of the design. The Pareto-optimal solutions were obtained and discussed in view of the thermal resistance and pressure drop and sensitivity of design variables to objective functions.
URI
http://dspace.inha.ac.kr/handle/10505/31209
ISSN
0887-8722
Appears in Collections:
College of Engineering(공과대학) > Mechanical Engineering(기계공학) > Local Access Journal Papers, Reports(기계공학 논문, 보고서)

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