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Two-phase flow simulation of mist film cooling with deposition for various boundary conditions

Wang, Jin LU ; Li, Qian Qian; Sundén, Bengt LU ; Baleta, Jakov and Vujanović, Milan (2017) In Numerical Heat Transfer; Part A: Applications 71(9). p.895-909
Abstract

Air film cooling is a conventional cooling technique that has been successfully used for gas turbine hot-section components, such as combustor liners, combustor transition pieces, and turbine vanes and blades. However, the increased benefit seems to approach a limit. This paper investigates the film cooling effectiveness considering mist injection. All the studies for various boundary conditions are conducted numerically, including the effects of droplet size, the flow rates of droplet injection, and the coolant air. Film cooling is also affected by the interaction between deposition and mist injection. A deposition configuration is located near the film hole with an inclination angle of 35°. Results show that the combined effect of... (More)

Air film cooling is a conventional cooling technique that has been successfully used for gas turbine hot-section components, such as combustor liners, combustor transition pieces, and turbine vanes and blades. However, the increased benefit seems to approach a limit. This paper investigates the film cooling effectiveness considering mist injection. All the studies for various boundary conditions are conducted numerically, including the effects of droplet size, the flow rates of droplet injection, and the coolant air. Film cooling is also affected by the interaction between deposition and mist injection. A deposition configuration is located near the film hole with an inclination angle of 35°. Results show that the combined effect of injection and deposition is to weaken the film cooling effectiveness, especially upstream of x/d = 19. For the coolant air at a low speed, the mist injection cannot provide better cooling protection than without the mist injection.

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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
71
issue
9
pages
15 pages
publisher
Taylor & Francis
external identifiers
  • scopus:85020667274
  • wos:000403797900001
ISSN
1040-7782
DOI
10.1080/10407782.2017.1326790
language
English
LU publication?
yes
id
1b6739ec-0077-41b4-9511-a881334afd46
date added to LUP
2017-07-04 13:38:51
date last changed
2017-09-18 11:37:44
@article{1b6739ec-0077-41b4-9511-a881334afd46,
  abstract     = {<p>Air film cooling is a conventional cooling technique that has been successfully used for gas turbine hot-section components, such as combustor liners, combustor transition pieces, and turbine vanes and blades. However, the increased benefit seems to approach a limit. This paper investigates the film cooling effectiveness considering mist injection. All the studies for various boundary conditions are conducted numerically, including the effects of droplet size, the flow rates of droplet injection, and the coolant air. Film cooling is also affected by the interaction between deposition and mist injection. A deposition configuration is located near the film hole with an inclination angle of 35°. Results show that the combined effect of injection and deposition is to weaken the film cooling effectiveness, especially upstream of x/d = 19. For the coolant air at a low speed, the mist injection cannot provide better cooling protection than without the mist injection.</p>},
  author       = {Wang, Jin and Li, Qian Qian and Sundén, Bengt and Baleta, Jakov and Vujanović, Milan},
  issn         = {1040-7782},
  language     = {eng},
  month        = {05},
  number       = {9},
  pages        = {895--909},
  publisher    = {Taylor & Francis},
  series       = {Numerical Heat Transfer; Part A: Applications},
  title        = {Two-phase flow simulation of mist film cooling with deposition for various boundary conditions},
  url          = {http://dx.doi.org/10.1080/10407782.2017.1326790},
  volume       = {71},
  year         = {2017},
}