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Parametric numerical study of flow and heat transfer in microchannels with wavy walls

  • Xi'an Jiaotong University
  • Georgia Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Wavy channels are investigated in this paper as a passive scheme to improve the heat transfer performance of laminar fluid flow as applied to microchannel heat sinks. Parametric study of three-dimensional laminar fluid flow and heat transfer characteristics in micro-sized wavy channels was performed by varying the wavy feature amplitude and wavelength at different Reynolds numbers between 50 and 150. Two different types of wavy channels were considered and their thermal performance for a constant heat flux of 47 W/cm2 was compared. Based on the comparison with straight channels, it was found that wavy channels can provide improved overall thermal performance. In addition, it was observed that wavy channels with a configuration in which crests and troughs face each other alternately (serpentine channels) were found to show an edge in thermal performance over the configuration where crests and troughs face each other. The best configuration considered in this paper was found to provide an improvement of up to 55% in the overall performance compared to microchannels with straight walls and hence are attractive candidates for cooling of future high heat flux electronics.

Original languageEnglish
Title of host publicationFluid Flow, Heat Transfer and Thermal Systems
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages1365-1373
Number of pages9
EditionPARTS A AND B
ISBN (Print)9780791844441
DOIs
StatePublished - 2010
EventASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010 - Vancouver, BC, Canada
Duration: 12 Nov 201018 Nov 2010

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
NumberPARTS A AND B
Volume7

Conference

ConferenceASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
Country/TerritoryCanada
CityVancouver, BC
Period12/11/1018/11/10

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