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Numerical Simulation of Heat Transfer Characteristics of Electronic Devices’ Radiators Filled with Metal Foam

Author: ZhangLiuGang
Tutor: ZhaoJianHui
School: Xi'an University of Science and Technology
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Metal foam Electronic cooling Numerical Simulation Heat transfer characteristics
CLC: TN02
Type: Master's thesis
Year: 2010
Downloads: 64
Quote: 0
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Abstract


With the rapid development of the electronics industry , the electronics industry to high-performance , miniaturization, integrated direction , the cooling of electronic products and more problems , overheating problems to solve electronic devices has caused attaches great importance to the research unit . This thesis is the way of forced air-cooling the traditional finned electronic devices radiator structure improved by changing the number of fins of the radiator , and the finned metal foam filled aluminum porous media , the metal foam padding electronic devices radiator. Improved radiator relying on the special structure of the metal foam characteristics , and enhance the heat transfer performance, so that the radiator heat exchange efficiency is improved significantly . The the study radiator fins respectively 1,2,4,6 sheet filled of 20ppi and 5ppi two different hole density of aluminum metal foam . Wind speed of 1.0m / s ~ 1.8m / s within the analog electronic devices radiator in filled aluminum metal foam , flow velocity , fin spacing , Metal Foam hole density and heat flux density on the radiator heat exchanger performance . And comparative analysis of the the radiator filler metal foam heat transfer characteristics . Derived by numerical simulation , the heat sink after filled with aluminum metal foam significantly improve the cooling effect , filled with aluminum metal foam the radiator , the surface heat transfer coefficient is 2.8 to 4.6 times the unfilled , filled with aluminum metal foam after the increase in pressure drop of the radiator smaller ; four filled aluminum foam heat sink fins , fin spacing of 11.1mm , the radiator surface heat transfer coefficient of the highest ; fill 5ppi aluminum metal foam four - finned radiator heat transfer performance best ; thermal performance of the heat flux on the radiator there is a big impact , in order to increase the flow rate of the ways to improve the thermal performance of the heat sink subject to certain restrictions . Under the same conditions and the same experimental parameters conditions , the numerical simulation data with the experimental data were compared , the better simulation results and experimental data to verify the correctness of the method of numerical simulation and data reliability .

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