An experimental investigation of heat transfer and friction in a ribbed square channel

S. W. Ahn; H. K. Kang; A. B.K. Putra; D. H. Lee

doi:10.1243/09544089JPME148

An experimental investigation of heat transfer and friction in a ribbed square channel

S. W. Ahn^*, H. K. Kang, A. B.K. Putra, D. H. Lee

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The heat transfer and friction characteristics of a fully developed turbulent air flow in a square channel with 45° inclined ribs on one, two, or four walls were experimentally investigated. Tests were performed for Reynolds numbers (Re) ranging from 7600 to 24 900, a pitch-to-rib-height ratio (P/e) of 8.0, and a rib-height-to-channel hydraulic diameter ratio (e/D_h) of 0.0667. Either two opposite walls or all four walls in the channel were heated.

Original language	English
Pages (from-to)	219-223
Number of pages	5
Journal	Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering
Volume	221
Issue number	4
DOIs	https://doi.org/10.1243/09544089JPME148
Publication status	Published - Nov 2007
Externally published	Yes

Keywords

Friction roughness function
Heat transfer roughness function
Ribbed square channel
Variable number of ribbed walls

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10.1243/09544089JPME148

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abstract = "The heat transfer and friction characteristics of a fully developed turbulent air flow in a square channel with 45° inclined ribs on one, two, or four walls were experimentally investigated. Tests were performed for Reynolds numbers (Re) ranging from 7600 to 24 900, a pitch-to-rib-height ratio (P/e) of 8.0, and a rib-height-to-channel hydraulic diameter ratio (e/Dh) of 0.0667. Either two opposite walls or all four walls in the channel were heated.",

keywords = "Friction roughness function, Heat transfer roughness function, Ribbed square channel, Variable number of ribbed walls",

author = "Ahn, {S. W.} and Kang, {H. K.} and Putra, {A. B.K.} and Lee, {D. H.}",

year = "2007",

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doi = "10.1243/09544089JPME148",

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AU - Lee, D. H.

PY - 2007/11

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AB - The heat transfer and friction characteristics of a fully developed turbulent air flow in a square channel with 45° inclined ribs on one, two, or four walls were experimentally investigated. Tests were performed for Reynolds numbers (Re) ranging from 7600 to 24 900, a pitch-to-rib-height ratio (P/e) of 8.0, and a rib-height-to-channel hydraulic diameter ratio (e/Dh) of 0.0667. Either two opposite walls or all four walls in the channel were heated.

KW - Friction roughness function

KW - Heat transfer roughness function

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KW - Variable number of ribbed walls

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JF - Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering

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An experimental investigation of heat transfer and friction in a ribbed square channel

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Keywords

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