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Conjugated heat transfer analysis of a film cooling passage with turbulator ribs

Wang, Jin; Sundén, Bengt LU ; Wu, Han; Yang, Jian; Gu, Chunwei and Wang, Qiu Wang (2016) In Heat Transfer Research 47(2). p.89-103
Abstract

In this study, the adiabatic film cooling effectiveness and conjugate heat transfer characteristics for a circular hole are investigated numerically. Seven turbulator ribs are located on the internal wall, and a film cooling hole between two adjacent ribs has an inclination angle of 30°. The secondary flow rate is affected by the internal channel flow velocity, and the external film cooling is combined with the internal channel flow conditions. In the conjugate heat transfer research, two different plate materials are considered to analyze the heat conduction characteristics. The results show that the turbulator ribs enhance the downstream heat transfer and provide a more extensive coverage area and effective cooling protection. More... (More)

In this study, the adiabatic film cooling effectiveness and conjugate heat transfer characteristics for a circular hole are investigated numerically. Seven turbulator ribs are located on the internal wall, and a film cooling hole between two adjacent ribs has an inclination angle of 30°. The secondary flow rate is affected by the internal channel flow velocity, and the external film cooling is combined with the internal channel flow conditions. In the conjugate heat transfer research, two different plate materials are considered to analyze the heat conduction characteristics. The results show that the turbulator ribs enhance the downstream heat transfer and provide a more extensive coverage area and effective cooling protection. More blade-wall heat is transferred by heat conduction, which makes the area-average wall temperature for the high thermal conductivity case to decrease along the secondary flow direction. The wall temperature distribution and film cooling effectiveness are affected significantly by heat conduction.

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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
keywords
Conjugate heat transfer, Film cooling, Heat conduction, Material, Turbulator rib
in
Heat Transfer Research
volume
47
issue
2
pages
15 pages
publisher
Begell House
external identifiers
  • scopus:84959870996
  • wos:000373232200002
ISSN
1064-2285
DOI
10.1615/HeatTransRes.2015010665
language
English
LU publication?
yes
id
caf4f112-5610-44e1-98ab-2a7d501ea1d9
date added to LUP
2016-09-21 09:55:40
date last changed
2017-09-12 11:38:45
@article{caf4f112-5610-44e1-98ab-2a7d501ea1d9,
  abstract     = {<p>In this study, the adiabatic film cooling effectiveness and conjugate heat transfer characteristics for a circular hole are investigated numerically. Seven turbulator ribs are located on the internal wall, and a film cooling hole between two adjacent ribs has an inclination angle of 30°. The secondary flow rate is affected by the internal channel flow velocity, and the external film cooling is combined with the internal channel flow conditions. In the conjugate heat transfer research, two different plate materials are considered to analyze the heat conduction characteristics. The results show that the turbulator ribs enhance the downstream heat transfer and provide a more extensive coverage area and effective cooling protection. More blade-wall heat is transferred by heat conduction, which makes the area-average wall temperature for the high thermal conductivity case to decrease along the secondary flow direction. The wall temperature distribution and film cooling effectiveness are affected significantly by heat conduction.</p>},
  author       = {Wang, Jin and Sundén, Bengt and Wu, Han and Yang, Jian and Gu, Chunwei and Wang, Qiu Wang},
  issn         = {1064-2285},
  keyword      = {Conjugate heat transfer,Film cooling,Heat conduction,Material,Turbulator rib},
  language     = {eng},
  number       = {2},
  pages        = {89--103},
  publisher    = {Begell House},
  series       = {Heat Transfer Research},
  title        = {Conjugated heat transfer analysis of a film cooling passage with turbulator ribs},
  url          = {http://dx.doi.org/10.1615/HeatTransRes.2015010665},
  volume       = {47},
  year         = {2016},
}