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Heat transfer and flow structure in a latticework duct with different sidewalls

Du, Wei LU ; Luo, Lei ; Wang, Songtao ; Liu, Jian LU and Sunden, Bengt LU (2019) In Journal of Heat Transfer 141(12).
Abstract

Heat transfer characteristics in a latticework duct with various sidewalls are numerically investigated. The crossing angle is 90 deg and the number of subchannels is eleven on both the pressure side and suction side for each latticework duct. The thickness of the ribs is 8 mm and the distance between adjacent ribs is 24 mm. The investigation is conducted for various Reynolds numbers (11,000 to 55,000) and six different sidewalls. Flow structure, pressure drop, and heat transfer characteristics are analyzed. Results revealed that the sidewall has significant effects on heat transfer and flow structure. The triangle-shaped sidewall provides the highest Nusselt number accompanied by the highest friction factor. The sidewall with a slot... (More)

Heat transfer characteristics in a latticework duct with various sidewalls are numerically investigated. The crossing angle is 90 deg and the number of subchannels is eleven on both the pressure side and suction side for each latticework duct. The thickness of the ribs is 8 mm and the distance between adjacent ribs is 24 mm. The investigation is conducted for various Reynolds numbers (11,000 to 55,000) and six different sidewalls. Flow structure, pressure drop, and heat transfer characteristics are analyzed. Results revealed that the sidewall has significant effects on heat transfer and flow structure. The triangle-shaped sidewall provides the highest Nusselt number accompanied by the highest friction factor. The sidewall with a slot shows the lowest friction factor and Nusselt number. An increased slot width decreased the Nusselt number and friction factor simultaneously.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
bypass flow, helical flow, latticework duct, sidewall, turning-impingement- turning
in
Journal of Heat Transfer
volume
141
issue
12
article number
124502
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • scopus:85088375262
ISSN
0022-1481
DOI
10.1115/1.4044826
language
English
LU publication?
yes
id
5a349a53-4d9e-46c1-acc4-e4b695cba968
date added to LUP
2022-04-04 09:41:04
date last changed
2022-04-27 21:01:36
@article{5a349a53-4d9e-46c1-acc4-e4b695cba968,
  abstract     = {{<p>Heat transfer characteristics in a latticework duct with various sidewalls are numerically investigated. The crossing angle is 90 deg and the number of subchannels is eleven on both the pressure side and suction side for each latticework duct. The thickness of the ribs is 8 mm and the distance between adjacent ribs is 24 mm. The investigation is conducted for various Reynolds numbers (11,000 to 55,000) and six different sidewalls. Flow structure, pressure drop, and heat transfer characteristics are analyzed. Results revealed that the sidewall has significant effects on heat transfer and flow structure. The triangle-shaped sidewall provides the highest Nusselt number accompanied by the highest friction factor. The sidewall with a slot shows the lowest friction factor and Nusselt number. An increased slot width decreased the Nusselt number and friction factor simultaneously.</p>}},
  author       = {{Du, Wei and Luo, Lei and Wang, Songtao and Liu, Jian and Sunden, Bengt}},
  issn         = {{0022-1481}},
  keywords     = {{bypass flow; helical flow; latticework duct; sidewall; turning-impingement- turning}},
  language     = {{eng}},
  number       = {{12}},
  publisher    = {{American Society Of Mechanical Engineers (ASME)}},
  series       = {{Journal of Heat Transfer}},
  title        = {{Heat transfer and flow structure in a latticework duct with different sidewalls}},
  url          = {{http://dx.doi.org/10.1115/1.4044826}},
  doi          = {{10.1115/1.4044826}},
  volume       = {{141}},
  year         = {{2019}},
}