A numerical investigation of heat transfer enhancement in offset strip fin heat exchangers in self-sustained oscillatory flows
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/131453
- author
- Saidi, Arash and Sundén, Bengt LU
- organization
- publishing date
- 2001
- 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
- 2016-04-01 12:04:45
- date last changed
- 2022-01-26 22:29:38
@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 = {{https://lup.lub.lu.se/search/files/2772109/624213.pdf}},
doi = {{10.1108/EUM0000000005984}},
volume = {{11}},
year = {{2001}},
}