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Effects of Particle Size and Mainstream Inlet Angle on Deposition in a Turbine Cascade

Wang, Jin LU ; Zhao, Zhanming ; Xie, Gongnan LU ; Mikulcic, Hrvoje ; Vujanovic, Milan and Sundén, Bengt LU (2021) In Journal of Energy Resources Technology, Transactions of the ASME 143(12).
Abstract

Based on the critical velocity model, impact and capture efficiencies in an AGTB turbine cascade are investigated numerically under various inlet angles of mainstream, blowing ratios, particle sizes, and particle densities. The effect of hole configuration on deposition is analyzed based on comparisons of results from combined hole and cylindrical hole. The impact efficiency increases with the increase of particle size. Impact area on pressure side of blade surface expands with increasing of the mainstream inlet angle from 123 deg to 143 deg. The capture efficiency decreases with the increase of blowing ratio for 10 µm particles. For particles with densities of 1485 kg/m3, 1980 kg/m3, and 2475 kg/m3, the... (More)

Based on the critical velocity model, impact and capture efficiencies in an AGTB turbine cascade are investigated numerically under various inlet angles of mainstream, blowing ratios, particle sizes, and particle densities. The effect of hole configuration on deposition is analyzed based on comparisons of results from combined hole and cylindrical hole. The impact efficiency increases with the increase of particle size. Impact area on pressure side of blade surface expands with increasing of the mainstream inlet angle from 123 deg to 143 deg. The capture efficiency decreases with the increase of blowing ratio for 10 µm particles. For particles with densities of 1485 kg/m3, 1980 kg/m3, and 2475 kg/m3, the maximum capture efficiency is reached when the particle size is 5 µm. The particle capture efficiency for the combined hole is up to 3.9% lower than that for cylindrical hole when the mainstream inlet angle is 123 deg.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Combined hole, Deposition, Energy conversion/systems, Gas turbine, Heat energy generation/storage/transfer, Mainstream inlet angle, Natural gas technology, Particle size
in
Journal of Energy Resources Technology, Transactions of the ASME
volume
143
issue
12
article number
122103
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • scopus:85126901533
ISSN
0195-0738
DOI
10.1115/1.4052276
language
English
LU publication?
yes
id
e7cd411c-6ac7-4cfa-b5eb-2392b1e157e0
date added to LUP
2022-05-03 11:20:41
date last changed
2023-11-21 04:28:23
@article{e7cd411c-6ac7-4cfa-b5eb-2392b1e157e0,
  abstract     = {{<p>Based on the critical velocity model, impact and capture efficiencies in an AGTB turbine cascade are investigated numerically under various inlet angles of mainstream, blowing ratios, particle sizes, and particle densities. The effect of hole configuration on deposition is analyzed based on comparisons of results from combined hole and cylindrical hole. The impact efficiency increases with the increase of particle size. Impact area on pressure side of blade surface expands with increasing of the mainstream inlet angle from 123 deg to 143 deg. The capture efficiency decreases with the increase of blowing ratio for 10 µm particles. For particles with densities of 1485 kg/m<sup>3</sup>, 1980 kg/m<sup>3</sup>, and 2475 kg/m<sup>3</sup>, the maximum capture efficiency is reached when the particle size is 5 µm. The particle capture efficiency for the combined hole is up to 3.9% lower than that for cylindrical hole when the mainstream inlet angle is 123 deg.</p>}},
  author       = {{Wang, Jin and Zhao, Zhanming and Xie, Gongnan and Mikulcic, Hrvoje and Vujanovic, Milan and Sundén, Bengt}},
  issn         = {{0195-0738}},
  keywords     = {{Combined hole; Deposition; Energy conversion/systems; Gas turbine; Heat energy generation/storage/transfer; Mainstream inlet angle; Natural gas technology; Particle size}},
  language     = {{eng}},
  number       = {{12}},
  publisher    = {{American Society Of Mechanical Engineers (ASME)}},
  series       = {{Journal of Energy Resources Technology, Transactions of the ASME}},
  title        = {{Effects of Particle Size and Mainstream Inlet Angle on Deposition in a Turbine Cascade}},
  url          = {{http://dx.doi.org/10.1115/1.4052276}},
  doi          = {{10.1115/1.4052276}},
  volume       = {{143}},
  year         = {{2021}},
}