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A computational study on thermal performance of microchannel heat sinks
Descriptive
TitleInfo
Title
A computational study on thermal performance of microchannel heat sinks
Name
(type = personal)
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Khadilkar
NamePart
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Omkar Prasad
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1996-
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Omkar Prasad Khadilkar
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author
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Jaluria
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Yogesh
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Yogesh Jaluria
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Advisory Committee
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chair
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Shan
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Jerry
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Jerry Shan
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Advisory Committee
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internal member
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(type = personal)
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(type = family)
Lin
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Hao
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Hao Lin
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Advisory Committee
Role
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internal member
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Rutgers University
Role
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(authority = RULIB)
degree grantor
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School of Graduate Studies
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school
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Text
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theses
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2020
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2020-01
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2020
Language
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English
Abstract
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In this research work, silicon microchannels are studied for computational analysis of heat transfer and fluid flow characteristics. Different designs of silicon microchannels were modeled and simulated in ANSYS FLUENT, evaluating thermal distributions for various boundary conditions. The operating parameters were inlet velocity, inlet temperature, and geometric configurations, under a constant surface heat flux condition. Microchannel cooling enhances heat transfer coefficients, thus allowing a high-power capacity. For a high heat-dissipating system, liquids provide better efficiency and capacity than air as a coolant. Hence water is used as the working medium in the microchannels.
Fabrication of silicon substrates prefers the rectangular geometry for microchannel design. For efficient design, geometric configurations considered in the modeling are varied from 100 x 50um to 500 x 200um. The length of microchannels fluctuates in between 1mm and 4.5mm.
The configurations considered were, Straight, U-shaped and Serpentine microchannels. Straight microchannels observed the best fluid flow characteristics. U-shaped microchannels had an increased pressure drop in the channels, but it showed better heat transfer characteristics than straight microchannels. The most effective in terms of heat transfer characteristics were the Serpentine microchannels. Straight microchannel showed an optimized heat transfer and fluid flow characteristics. Hence variations in it were verified for improved cooling performance. Based on the analysis, there is enhanced heat transfer rates at the cost of a massive pressure drop.
Fabrication of silicon substrates prefers the rectangular geometry for microchannel design. For efficient design, geometric configurations considered in the modeling are varied from 100 x 50um to 500 x 200um. The length of microchannels fluctuates in between 1mm and 4.5mm.
The configurations considered were, Straight, U-shaped and Serpentine microchannels. Straight microchannels observed the best fluid flow characteristics. U-shaped microchannels had an increased pressure drop in the channels, but it showed better heat transfer characteristics than straight microchannels. The most effective in terms of heat transfer characteristics were the Serpentine microchannels. Straight microchannel showed an optimized heat transfer and fluid flow characteristics. Hence variations in it were verified for improved cooling performance. Based on the analysis, there is enhanced heat transfer rates at the cost of a massive pressure drop.
Subject
(authority = RUETD)
Topic
Mechanical and Aerospace Engineering
Subject
(authority = local)
Topic
Microchannel heat sinks
Subject
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Topic
Heat sinks (Electronics)
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Title
Rutgers University Electronic Theses and Dissertations
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ETD_10449
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application/pdf
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text/xml
Extent
1 online resource (x, 41 pages) : illustrations
Note
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M.S.
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Includes bibliographical references
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School of Graduate Studies Electronic Theses and Dissertations
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rucore10001600001
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NjNbRU
Identifier
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doi:10.7282/t3-e4as-8x13
Genre
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ETD graduate
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Rights
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The author owns the copyright to this work.
RightsHolder
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Name
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Khadilkar
GivenName
Omkar
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Copyright Holder
RightsEvent
Type
Permission or license
DateTime
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2019-12-13 14:14:07
AssociatedEntity
Name
Omkar Khadilkar
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Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
AssociatedObject
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License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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2019-12-13T13:49:22
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2019-12-13T13:49:22
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