Experimental investigation of local heat transfer in a square duct with continuous and truncated large ribs

Lei Wang, Bengt Sundén

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

Repeated ribs are frequently employed to promote turbulence and to enhance heat transfer in various ducts. In the present study, liquid crystal thermography was applied to the study of heat transfer from a square channel having one surface heated at uniform heat flux and roughened by repeated ribs. The continuous and truncated ribs, having square sections, with height-to-hydraulic diameter ratio of 0.15, were deployed normal to the mainstream direction of flow. Detailed distributions of the local heat transfer coefficient were obtained at various Reynolds number within the turbulent flow regime. Averaged data were calculated in order to evaluate the augmentation of heat transfer by the presence of different ribs. Copyright
Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
PublisherAmerican Society Of Mechanical Engineers (ASME)
Pages589-597
Volume375
Publication statusPublished - 2004
EventASME International Mechanical Engineering Congress and Exposition, 2004 - Anaheim, CA, United States
Duration: 2004 Nov 132004 Nov 19

Publication series

Name
Number1
Volume375
ISSN (Print)0272-5673

Conference

ConferenceASME International Mechanical Engineering Congress and Exposition, 2004
Abbreviated titleIMECE2004
Country/TerritoryUnited States
CityAnaheim, CA
Period2004/11/132004/11/19

Subject classification (UKÄ)

  • Energy Engineering

Free keywords

  • Liquid crystal thermography
  • Mass flow rate
  • Local heat transfer
  • Friction factor

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