Flow and heat transfer from multiple slot air jets impinging on circular cylinders
(2005) In Journal of Food Engineering 67(3). p.273-280- Abstract
- This study presents flow and heat transfer predictions of multiple slot air jets impinging on circular cylinders using CFD (computational fluid dynamics). The distribution of Nusselt numbers around the cylinders for different Reynolds numbers (23,000-100,000), distances between the jets, and openings between them was determined for two and three jets and compared to simulations of a single jet. The flow characteristics and the heat transfer distribution around the cylinders are found to be dependent on the distance and the opening between the jets. The interaction between two jets is found to be most advantageous. The heat transfer increases for higher Reynolds number in general; for two jets the heat transfer in the stagnation point is... (More)
- This study presents flow and heat transfer predictions of multiple slot air jets impinging on circular cylinders using CFD (computational fluid dynamics). The distribution of Nusselt numbers around the cylinders for different Reynolds numbers (23,000-100,000), distances between the jets, and openings between them was determined for two and three jets and compared to simulations of a single jet. The flow characteristics and the heat transfer distribution around the cylinders are found to be dependent on the distance and the opening between the jets. The interaction between two jets is found to be most advantageous. The heat transfer increases for higher Reynolds number in general; for two jets the heat transfer in the stagnation point is Nu(s) = 0.20Re(0.68). For three jets, the heat transfer distribution is different on the outer cylinders, as compared to the cylinder in the centre. (C) 2004 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/152105
- author
- Olsson, E E M ; Ahrne, L M and Trägårdh, Christian LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Jet impingement heat transfer, Multiple jets, Nusselt number, CFD, SST, Cylinder, Food
- in
- Journal of Food Engineering
- volume
- 67
- issue
- 3
- pages
- 273 - 280
- publisher
- Elsevier
- external identifiers
-
- wos:000226300300004
- scopus:9944245455
- ISSN
- 0260-8774
- DOI
- 10.1016/j.jfoodeng.2004.04.030
- language
- English
- LU publication?
- yes
- id
- 00aeb367-0ff5-439b-a685-cff60c0e5071 (old id 152105)
- date added to LUP
- 2016-04-01 16:38:38
- date last changed
- 2023-12-13 13:00:12
@article{00aeb367-0ff5-439b-a685-cff60c0e5071,
abstract = {{This study presents flow and heat transfer predictions of multiple slot air jets impinging on circular cylinders using CFD (computational fluid dynamics). The distribution of Nusselt numbers around the cylinders for different Reynolds numbers (23,000-100,000), distances between the jets, and openings between them was determined for two and three jets and compared to simulations of a single jet. The flow characteristics and the heat transfer distribution around the cylinders are found to be dependent on the distance and the opening between the jets. The interaction between two jets is found to be most advantageous. The heat transfer increases for higher Reynolds number in general; for two jets the heat transfer in the stagnation point is Nu(s) = 0.20Re(0.68). For three jets, the heat transfer distribution is different on the outer cylinders, as compared to the cylinder in the centre. (C) 2004 Elsevier Ltd. All rights reserved.}},
author = {{Olsson, E E M and Ahrne, L M and Trägårdh, Christian}},
issn = {{0260-8774}},
keywords = {{Jet impingement heat transfer; Multiple jets; Nusselt number; CFD; SST; Cylinder; Food}},
language = {{eng}},
number = {{3}},
pages = {{273--280}},
publisher = {{Elsevier}},
series = {{Journal of Food Engineering}},
title = {{Flow and heat transfer from multiple slot air jets impinging on circular cylinders}},
url = {{http://dx.doi.org/10.1016/j.jfoodeng.2004.04.030}},
doi = {{10.1016/j.jfoodeng.2004.04.030}},
volume = {{67}},
year = {{2005}},
}