Endwall convective heat transfer for bluff bodies
(2012) In International Communications in Heat and Mass Transfer 39(2). p.167-173- Abstract
- The endwall heat transfer characteristics of forced flow past bluff bodies have been investigated using liquid crystal thermography (LCT). The bluff body is placed in a rectangular channel with both its ends attached to the endwalls. The Reynolds number varies from 50,000 to 100,000. In this study, a single bluff body and two bluff bodies arranged in tandem are considered. Due to the formation of horseshoe vortices, the heat transfer is enhanced appreciably for both cases. However, for the case of two bluff bodies in tandem, it is found that the presence of the second bluff body decreases the heat transfer as compared to the case of a single bluff body. In addition, the results show that the heat transfer exhibits Reynolds number... (More)
- The endwall heat transfer characteristics of forced flow past bluff bodies have been investigated using liquid crystal thermography (LCT). The bluff body is placed in a rectangular channel with both its ends attached to the endwalls. The Reynolds number varies from 50,000 to 100,000. In this study, a single bluff body and two bluff bodies arranged in tandem are considered. Due to the formation of horseshoe vortices, the heat transfer is enhanced appreciably for both cases. However, for the case of two bluff bodies in tandem, it is found that the presence of the second bluff body decreases the heat transfer as compared to the case of a single bluff body. In addition, the results show that the heat transfer exhibits Reynolds number similarity. For a single bluff body, the Nusselt number profiles collapse well when the data are scaled by Re-0.55; for two bluff bodies arranged in tandem, the heat transfer scaling is changed to Re-0.51, indicating that the power index of Reynolds number is flow dependent. (C) 2011 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2515866
- author
- Wang, Lei LU ; Salewski, Mirko LU ; Sundén, Bengt LU ; Borg, Andreas and Abrahamsson, Hans
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- LCT, Bluff bodies, Heat transfer scaling, Endwall heat transfer
- in
- International Communications in Heat and Mass Transfer
- volume
- 39
- issue
- 2
- pages
- 167 - 173
- publisher
- Elsevier
- external identifiers
-
- wos:000301613300002
- scopus:84862830275
- ISSN
- 0735-1933
- DOI
- 10.1016/j.icheatmasstransfer.2011.10.006
- language
- English
- LU publication?
- yes
- id
- db221590-e974-40e7-9382-938011f65eff (old id 2515866)
- date added to LUP
- 2016-04-01 10:57:12
- date last changed
- 2022-04-20 07:49:02
@article{db221590-e974-40e7-9382-938011f65eff,
abstract = {{The endwall heat transfer characteristics of forced flow past bluff bodies have been investigated using liquid crystal thermography (LCT). The bluff body is placed in a rectangular channel with both its ends attached to the endwalls. The Reynolds number varies from 50,000 to 100,000. In this study, a single bluff body and two bluff bodies arranged in tandem are considered. Due to the formation of horseshoe vortices, the heat transfer is enhanced appreciably for both cases. However, for the case of two bluff bodies in tandem, it is found that the presence of the second bluff body decreases the heat transfer as compared to the case of a single bluff body. In addition, the results show that the heat transfer exhibits Reynolds number similarity. For a single bluff body, the Nusselt number profiles collapse well when the data are scaled by Re-0.55; for two bluff bodies arranged in tandem, the heat transfer scaling is changed to Re-0.51, indicating that the power index of Reynolds number is flow dependent. (C) 2011 Elsevier Ltd. All rights reserved.}},
author = {{Wang, Lei and Salewski, Mirko and Sundén, Bengt and Borg, Andreas and Abrahamsson, Hans}},
issn = {{0735-1933}},
keywords = {{LCT; Bluff bodies; Heat transfer scaling; Endwall heat transfer}},
language = {{eng}},
number = {{2}},
pages = {{167--173}},
publisher = {{Elsevier}},
series = {{International Communications in Heat and Mass Transfer}},
title = {{Endwall convective heat transfer for bluff bodies}},
url = {{https://lup.lub.lu.se/search/files/2263575/2969355.pdf}},
doi = {{10.1016/j.icheatmasstransfer.2011.10.006}},
volume = {{39}},
year = {{2012}},
}