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Numerical Predictions of Pressure Drop and Heat Transfer in a Blade Internal Cooling Passage with Continuous/Truncated Ribs

Li, Shian; Xie, Gongnan; Zhang, Weihong and Sundén, Bengt LU (2012) In Heat Transfer Research 43(6). p.573-590
Abstract
Ribs are often used in the mid-section of internal turbine blades to augment heat transfer from the blade wall to a coolant, but most research works are concerned only with continuous ribs attached to the side walls. In this paper, a turbulent flow and heat transfer of a rectangular passage with continuous and truncated ribs on opposite walls have been predicted numerically. Two types of ribs are studied: 90-deg ribs and 45-deg V-shaped ribs. The inlet Reynolds numbers range from 12,000 to 60,000. The complex three-dimensional turbulent flows inside the blade internal coolant passage and heat transfer between the rib-walls and side-walls are presented. The overall performances of six different ribbed passages are evaluated and compared.... (More)
Ribs are often used in the mid-section of internal turbine blades to augment heat transfer from the blade wall to a coolant, but most research works are concerned only with continuous ribs attached to the side walls. In this paper, a turbulent flow and heat transfer of a rectangular passage with continuous and truncated ribs on opposite walls have been predicted numerically. Two types of ribs are studied: 90-deg ribs and 45-deg V-shaped ribs. The inlet Reynolds numbers range from 12,000 to 60,000. The complex three-dimensional turbulent flows inside the blade internal coolant passage and heat transfer between the rib-walls and side-walls are presented. The overall performances of six different ribbed passages are evaluated and compared. Numerical results show that the passage with truncated V-shaped ribs is very effective in improving the heat transfer performance with a low pressure drop. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
heat transfer, rib, continuous, truncated, computation
in
Heat Transfer Research
volume
43
issue
6
pages
573 - 590
publisher
Begell House
external identifiers
  • wos:000313855400005
  • scopus:84873894370
ISSN
1064-2285
DOI
10.1615/HeatTransRes.2012005855
language
English
LU publication?
yes
id
70f4a9ed-8dc2-4e6d-9819-b0903315db9f (old id 3577831)
date added to LUP
2013-03-20 14:16:28
date last changed
2017-09-10 03:30:01
@article{70f4a9ed-8dc2-4e6d-9819-b0903315db9f,
  abstract     = {Ribs are often used in the mid-section of internal turbine blades to augment heat transfer from the blade wall to a coolant, but most research works are concerned only with continuous ribs attached to the side walls. In this paper, a turbulent flow and heat transfer of a rectangular passage with continuous and truncated ribs on opposite walls have been predicted numerically. Two types of ribs are studied: 90-deg ribs and 45-deg V-shaped ribs. The inlet Reynolds numbers range from 12,000 to 60,000. The complex three-dimensional turbulent flows inside the blade internal coolant passage and heat transfer between the rib-walls and side-walls are presented. The overall performances of six different ribbed passages are evaluated and compared. Numerical results show that the passage with truncated V-shaped ribs is very effective in improving the heat transfer performance with a low pressure drop.},
  author       = {Li, Shian and Xie, Gongnan and Zhang, Weihong and Sundén, Bengt},
  issn         = {1064-2285},
  keyword      = {heat transfer,rib,continuous,truncated,computation},
  language     = {eng},
  number       = {6},
  pages        = {573--590},
  publisher    = {Begell House},
  series       = {Heat Transfer Research},
  title        = {Numerical Predictions of Pressure Drop and Heat Transfer in a Blade Internal Cooling Passage with Continuous/Truncated Ribs},
  url          = {http://dx.doi.org/10.1615/HeatTransRes.2012005855},
  volume       = {43},
  year         = {2012},
}