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A numerical investigation of heat transfer enhancement in offset strip fin heat exchangers in self-sustained oscillatory flows

Saidi, Arash and Sundén, Bengt LU (2001) In International Journal of Numerical Methods for Heat & Fluid Flow 11(7). p.699-716
Abstract
Numerical analysis of the instantaneous flow and heat transfer has been carried out for offset strip fin geometries in self-sustained oscillatory flow. The analysis is based on the two-dimensional solution of the governing equations of the fluid flow and heat transfer with the aid of appropriate computational fluid dynamics methods. Unsteady calculations have been carried out. The obtained time-dependent results are compared with previous numerical and experimental results in terms of mean values, as well as oscillation characteristics. The mechanisms of heat transfer enhancement are discussed and it has been shown that the fluctuating temperature and velocity second moments exhibit non-zero values over the fins. The creation processes of... (More)
Numerical analysis of the instantaneous flow and heat transfer has been carried out for offset strip fin geometries in self-sustained oscillatory flow. The analysis is based on the two-dimensional solution of the governing equations of the fluid flow and heat transfer with the aid of appropriate computational fluid dynamics methods. Unsteady calculations have been carried out. The obtained time-dependent results are compared with previous numerical and experimental results in terms of mean values, as well as oscillation characteristics. The mechanisms of heat transfer enhancement are discussed and it has been shown that the fluctuating temperature and velocity second moments exhibit non-zero values over the fins. The creation processes of the temperature and velocity fluctuations have been studied and the dissimilarity between these has been proved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Numerical Methods for Heat & Fluid Flow
volume
11
issue
7
pages
699 - 716
publisher
Emerald Group Publishing Limited
external identifiers
  • wos:000171708100005
  • scopus:0034795820
ISSN
1758-6585
DOI
10.1108/EUM0000000005984
language
English
LU publication?
yes
id
a27955da-1f27-44e6-9702-a021a8f2f042 (old id 131453)
date added to LUP
2007-07-04 08:51:22
date last changed
2018-05-29 11:52:52
@article{a27955da-1f27-44e6-9702-a021a8f2f042,
  abstract     = {Numerical analysis of the instantaneous flow and heat transfer has been carried out for offset strip fin geometries in self-sustained oscillatory flow. The analysis is based on the two-dimensional solution of the governing equations of the fluid flow and heat transfer with the aid of appropriate computational fluid dynamics methods. Unsteady calculations have been carried out. The obtained time-dependent results are compared with previous numerical and experimental results in terms of mean values, as well as oscillation characteristics. The mechanisms of heat transfer enhancement are discussed and it has been shown that the fluctuating temperature and velocity second moments exhibit non-zero values over the fins. The creation processes of the temperature and velocity fluctuations have been studied and the dissimilarity between these has been proved.},
  author       = {Saidi, Arash and Sundén, Bengt},
  issn         = {1758-6585},
  language     = {eng},
  number       = {7},
  pages        = {699--716},
  publisher    = {Emerald Group Publishing Limited},
  series       = {International Journal of Numerical Methods for Heat & Fluid Flow},
  title        = {A numerical investigation of heat transfer enhancement in offset strip fin heat exchangers in self-sustained oscillatory flows},
  url          = {http://dx.doi.org/10.1108/EUM0000000005984},
  volume       = {11},
  year         = {2001},
}