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Numerical investigation of turbulent heat transfer in a rectangular-sectioned 90 degrees bend

Etemad, Sassan LU and Sundén, Bengt LU (2006) In Numerical Heat Transfer Part A: Applications 49(4). p.323-343
Abstract
The flow and thermal fields in a rectangular-sectioned 90 degrees bend with a cross-section aspect ratio of 6 were investigated using four turbulence models. All models managed to reproduce the general flow and thermal patterns. Chen's high-Re k-epsilon model and Suga's cubic low-Re k-epsilon model performed well. The V2F k-epsilon model was found to be the least diffusive model and delivered good results. The RSM-GGDH model showed convergence difficulties and gave poor results. It was found that the boundary-layer thickness and the flow upstream of the bend are crucial for the character of the secondary flow, velocity profile, turbulence level, and heat transfer in the bend.
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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Numerical Heat Transfer Part A: Applications
volume
49
issue
4
pages
323 - 343
publisher
Taylor & Francis
external identifiers
  • wos:000234422500001
  • scopus:30544436699
ISSN
1040-7782
DOI
10.1080/10407780500430884
language
English
LU publication?
yes
id
34e80f92-196d-4237-a369-c67bb2a6482f (old id 421492)
date added to LUP
2016-04-01 16:39:16
date last changed
2021-05-25 04:46:42
@article{34e80f92-196d-4237-a369-c67bb2a6482f,
  abstract     = {The flow and thermal fields in a rectangular-sectioned 90 degrees bend with a cross-section aspect ratio of 6 were investigated using four turbulence models. All models managed to reproduce the general flow and thermal patterns. Chen's high-Re k-epsilon model and Suga's cubic low-Re k-epsilon model performed well. The V2F k-epsilon model was found to be the least diffusive model and delivered good results. The RSM-GGDH model showed convergence difficulties and gave poor results. It was found that the boundary-layer thickness and the flow upstream of the bend are crucial for the character of the secondary flow, velocity profile, turbulence level, and heat transfer in the bend.},
  author       = {Etemad, Sassan and Sundén, Bengt},
  issn         = {1040-7782},
  language     = {eng},
  number       = {4},
  pages        = {323--343},
  publisher    = {Taylor & Francis},
  series       = {Numerical Heat Transfer Part A: Applications},
  title        = {Numerical investigation of turbulent heat transfer in a rectangular-sectioned 90 degrees bend},
  url          = {http://dx.doi.org/10.1080/10407780500430884},
  doi          = {10.1080/10407780500430884},
  volume       = {49},
  year         = {2006},
}