ON THE CALCULATION OF TURBULENT HEAT TRANSPORT DOWNSTREAM FROM AN ABRUPT PIPE EXPANSION.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • C. C. Chieng
  • B. E. Launder

Detail(s)

Original languageEnglish
Pages (from-to)9-1
Journal / PublicationAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume13
Publication statusPublished - 1980
Externally publishedYes

Conference

TitleMomentum and Heat Transfer Processes in Recirc Flows, Presented at the Winter Annu Meet of ASME
CityChicago, IL, USA
Period16 - 21 November 1980

Abstract

A numerical study is reported of flow and heat transfer in the separated flow region created by an abrupt pipe expansion with a standard model of turbulence. The study has given its main attention to the simulation of the region in the immediate vicinity of the wall where turbulent transport gives way to molecular conduction and diffusion. As in other separated flow studies, wall resistance laws or ″wall functions″ used to bridge this near-wall region are based on the idea that, beyond the viscous sub-layer, the turbulent length scale is universal, increasing linearly with distance from the wall.