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Investigation of Heat Transfer and Pressure Drop of an Impinging Jet in a Cross-Flow for Cooling of a Heated Cube
University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för energi- och maskinteknik.
Department of Mechanical Engineering, Linköping University, Linköping, Sweden.ORCID iD: 0000-0003-3472-4210
2008 (English)In: Journal of heat transfer, ISSN 0022-1481, E-ISSN 1528-8943, Vol. 130, no 12, 121401Article in journal (Refereed) Published
Abstract [en]

The objective of this study is to investigate the thermal performance and the cost measured in pressure drops of a targeted cooling system with use of an impinging jet in combination with a low-velocity channel flow on a heated wall-mounted cube. The effects of the Reynolds numbers of the impinging jet and the cross flow, as well as the distance between the top and bottom plates, are investigated. A steady-state 3D computational fluid dynamics model was developed with use of a Reynolds stress model as turbulence model. The geometrical case is a channel with a heated cube in the middle of the base plate and two inlets, one horizontal channel flow and one vertical impinging jet. The numerical model was validated against experimental data with a similar geometrical setup. The velocity field was measured by particle image velocimetry and the surface temperature was measured by an infrared imaging system. This case results in a very complex flow structure where several flow-related phenomena influence the heat transfer rate and the pressure drops. The average heat transfer coefficients on each side of the cube and the pressure loss coefficients are presented; correlations for the average heat transfer coefficient on the cube and the pressure loss coefficients are created. [DOI: 10.1115/1.2969266]

Place, publisher, year, edition, pages
2008. Vol. 130, no 12, 121401
Keyword [en]
electronics cooling, impinging jet, CFD, RSM
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:hig:diva-10294DOI: 10.1115/1.2969266ISI: 000262842200004Scopus ID: 2-s2.0-77955247678OAI: oai:DiVA.org:hig-10294DiVA: diva2:442958
Available from: 2011-09-22 Created: 2011-09-21 Last updated: 2017-01-03Bibliographically approved

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Rundstrom, DanielMoshfegh, Bahram
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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
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