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Heat transfer characteristics of a dimpled/protrusioned pin fin wedge duct with different converging angles for turbine blades

Wang, Songtao ; Yan, Han ; Luo, Lei ; Du, Wei LU ; Sundén, Bengt LU and Zhang, Xinhong (2019) In Numerical Heat Transfer; Part A: Applications 76(5). p.369-392
Abstract

A numerical method is utilized to investigate the converging angle effects on the flow structure and heat transfer of a pin fin wedge duct with dimples/protrusions. The studied converging angles are 0:0°; 6:3°; and 12:7° The results show that a pin fin-dimple wedge duct with larger converging angle produces higher heat transfer enhancement due to flow acceleration, increase of the impingement region, and shrinkage of the flow recirculation region, but it is also accompanied with a much larger friction factor. A pin fin-protrusion wedge duct with larger converging angle yields higher heat transfer augmentation due to flow acceleration and more intense impingement on the protrusion but it is also associated with larger pressure... (More)

A numerical method is utilized to investigate the converging angle effects on the flow structure and heat transfer of a pin fin wedge duct with dimples/protrusions. The studied converging angles are 0:0°; 6:3°; and 12:7° The results show that a pin fin-dimple wedge duct with larger converging angle produces higher heat transfer enhancement due to flow acceleration, increase of the impingement region, and shrinkage of the flow recirculation region, but it is also accompanied with a much larger friction factor. A pin fin-protrusion wedge duct with larger converging angle yields higher heat transfer augmentation due to flow acceleration and more intense impingement on the protrusion but it is also associated with larger pressure penalty.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Numerical Heat Transfer; Part A: Applications
volume
76
issue
5
pages
369 - 392
publisher
Taylor & Francis
external identifiers
  • scopus:85068116331
ISSN
1040-7782
DOI
10.1080/10407782.2019.1630235
language
English
LU publication?
yes
id
e117e2f3-c513-4c4c-a07f-bdd840c35fc6
date added to LUP
2019-07-09 14:11:20
date last changed
2020-04-07 05:32:58
@article{e117e2f3-c513-4c4c-a07f-bdd840c35fc6,
  abstract     = {<p>A numerical method is utilized to investigate the converging angle effects on the flow structure and heat transfer of a pin fin wedge duct with dimples/protrusions. The studied converging angles are 0:0°; 6:3°; and 12:7° The results show that a pin fin-dimple wedge duct with larger converging angle produces higher heat transfer enhancement due to flow acceleration, increase of the impingement region, and shrinkage of the flow recirculation region, but it is also accompanied with a much larger friction factor. A pin fin-protrusion wedge duct with larger converging angle yields higher heat transfer augmentation due to flow acceleration and more intense impingement on the protrusion but it is also associated with larger pressure penalty.</p>},
  author       = {Wang, Songtao and Yan, Han and Luo, Lei and Du, Wei and Sundén, Bengt and Zhang, Xinhong},
  issn         = {1040-7782},
  language     = {eng},
  month        = {06},
  number       = {5},
  pages        = {369--392},
  publisher    = {Taylor & Francis},
  series       = {Numerical Heat Transfer; Part A: Applications},
  title        = {Heat transfer characteristics of a dimpled/protrusioned pin fin wedge duct with different converging angles for turbine blades},
  url          = {http://dx.doi.org/10.1080/10407782.2019.1630235},
  doi          = {10.1080/10407782.2019.1630235},
  volume       = {76},
  year         = {2019},
}