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Thermal analysis of microchannel heat sink

Microchannel heat sink is now one of the most effective cooling techniques. As micropump works under pulsation regime and influenced by the possibility of heat transfer enhancement through pulsation, the goal has been to study the effect of pulsation to thermal behavior of microchannel heat sink. A...

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Main Author: Mohd Sa'at, Fatimah Al-Zahrah
Format: Thesis
Language:English
Published: 2006
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Online Access:http://eprints.utm.my/id/eprint/35227/1/FatimahAl-ZahrahMohdSa%E2%80%99AtMFKM2006.pdf
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spelling my.utm.352272017-10-12T06:30:25Z http://eprints.utm.my/id/eprint/35227/ Thermal analysis of microchannel heat sink Mohd Sa'at, Fatimah Al-Zahrah Unspecified Microchannel heat sink is now one of the most effective cooling techniques. As micropump works under pulsation regime and influenced by the possibility of heat transfer enhancement through pulsation, the goal has been to study the effect of pulsation to thermal behavior of microchannel heat sink. A computational model for studying pulsatile flow in microchannel had been developed using FLUENT. The meshes generated had been tested for grid independency and the results numerically iterated by FLUENT had been validated and compared to various published data. The pulsating flow pressure amplitudes were 50%, 70% and 90% of mean pressure and the flow regime is laminar. Pulsation tested was with frequencies in the range 500 Hz to 1.5 kHz. The results of pulsating flow simulations had been analysed and compared with the steady flow simulations. The values of the augmentation factor of heat flux along the flow direction were found to be less than unity. The values of the augmentation factor of heat transfer coefficient along the flow direction were less than unity at the entrance region and increased above unity further downstream. Pulsation had resulted in a lower wall temperature distribution compared to steady flow. The pulsation amplitude and frequency investigated has no significant effect on wall temperature. Heat flux ratio and heat transfer coefficient ratio however varies at frequencies and amplitudes investigated 2006 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/35227/1/FatimahAl-ZahrahMohdSa%E2%80%99AtMFKM2006.pdf Mohd Sa'at, Fatimah Al-Zahrah (2006) Thermal analysis of microchannel heat sink. Masters thesis, Universiti Teknologi Malaysia, Faculty of Mechanical Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:79456?queryType=vitalDismax&query=+Thermal+analysis+of+microchannel+heat+sink+&public=true
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic Unspecified
spellingShingle Unspecified
Mohd Sa'at, Fatimah Al-Zahrah
Thermal analysis of microchannel heat sink
description Microchannel heat sink is now one of the most effective cooling techniques. As micropump works under pulsation regime and influenced by the possibility of heat transfer enhancement through pulsation, the goal has been to study the effect of pulsation to thermal behavior of microchannel heat sink. A computational model for studying pulsatile flow in microchannel had been developed using FLUENT. The meshes generated had been tested for grid independency and the results numerically iterated by FLUENT had been validated and compared to various published data. The pulsating flow pressure amplitudes were 50%, 70% and 90% of mean pressure and the flow regime is laminar. Pulsation tested was with frequencies in the range 500 Hz to 1.5 kHz. The results of pulsating flow simulations had been analysed and compared with the steady flow simulations. The values of the augmentation factor of heat flux along the flow direction were found to be less than unity. The values of the augmentation factor of heat transfer coefficient along the flow direction were less than unity at the entrance region and increased above unity further downstream. Pulsation had resulted in a lower wall temperature distribution compared to steady flow. The pulsation amplitude and frequency investigated has no significant effect on wall temperature. Heat flux ratio and heat transfer coefficient ratio however varies at frequencies and amplitudes investigated
format Thesis
author Mohd Sa'at, Fatimah Al-Zahrah
author_facet Mohd Sa'at, Fatimah Al-Zahrah
author_sort Mohd Sa'at, Fatimah Al-Zahrah
title Thermal analysis of microchannel heat sink
title_short Thermal analysis of microchannel heat sink
title_full Thermal analysis of microchannel heat sink
title_fullStr Thermal analysis of microchannel heat sink
title_full_unstemmed Thermal analysis of microchannel heat sink
title_sort thermal analysis of microchannel heat sink
publishDate 2006
url http://eprints.utm.my/id/eprint/35227/1/FatimahAl-ZahrahMohdSa%E2%80%99AtMFKM2006.pdf
http://eprints.utm.my/id/eprint/35227/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:79456?queryType=vitalDismax&query=+Thermal+analysis+of+microchannel+heat+sink+&public=true
_version_ 1643649800292270080
score 13.211869

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