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LES of the flow and particle ingestion into an air intake of a jet engine running on the ground

Moroianu, Dragos LU ; Karlsson, Arne and Fuchs, Laszlo LU (2004) 2004 ASME Turbo Expo In Proceedings of the ASME Turbo Expo 2004 2. p.209-217
Abstract
The flow field generated by the flow into a jet engine air-intake, with near ground effects, is considered. The axial inflow in the neighborhood of the ground generates a system of unsteady vortices. Some of these vortices extend from the air-intake towards the ground. Some of these vortices are strong enough to dislocate and even lift small objects from the ground up to the air-intake. The dynamics of the vortex system makes it difficult to study the problem by standard numerical and experimental methods. The dynamics of the vortices can be captured by using Large Eddy Simulations (LES), which is used here to enhance the understanding of the dynamics of the flow field. The computed flow field is used also to assess the ingestion of... (More)
The flow field generated by the flow into a jet engine air-intake, with near ground effects, is considered. The axial inflow in the neighborhood of the ground generates a system of unsteady vortices. Some of these vortices extend from the air-intake towards the ground. Some of these vortices are strong enough to dislocate and even lift small objects from the ground up to the air-intake. The dynamics of the vortex system makes it difficult to study the problem by standard numerical and experimental methods. The dynamics of the vortices can be captured by using Large Eddy Simulations (LES), which is used here to enhance the understanding of the dynamics of the flow field. The computed flow field is used also to assess the ingestion of particles into the air-intake. It is shown that particles of several mm sizes can be ingested into the jet engine. This in turn may result in enhanced erosion of the compressor blades. The results of the computations in terms of mean velocity field have been compared to experimental data. These results are in good agreement with the experiments. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Vortex systems, Flow fields, Large Eddy simulations (LES), Dynamic models
in
Proceedings of the ASME Turbo Expo 2004
volume
2
pages
209 - 217
publisher
American Society Of Mechanical Engineers (ASME)
conference name
2004 ASME Turbo Expo
external identifiers
  • Scopus:10244263591
language
English
LU publication?
yes
id
536f1857-431d-4b1f-861f-07f18027d423 (old id 614141)
date added to LUP
2007-11-29 13:57:45
date last changed
2016-10-13 04:48:59
@misc{536f1857-431d-4b1f-861f-07f18027d423,
  abstract     = {The flow field generated by the flow into a jet engine air-intake, with near ground effects, is considered. The axial inflow in the neighborhood of the ground generates a system of unsteady vortices. Some of these vortices extend from the air-intake towards the ground. Some of these vortices are strong enough to dislocate and even lift small objects from the ground up to the air-intake. The dynamics of the vortex system makes it difficult to study the problem by standard numerical and experimental methods. The dynamics of the vortices can be captured by using Large Eddy Simulations (LES), which is used here to enhance the understanding of the dynamics of the flow field. The computed flow field is used also to assess the ingestion of particles into the air-intake. It is shown that particles of several mm sizes can be ingested into the jet engine. This in turn may result in enhanced erosion of the compressor blades. The results of the computations in terms of mean velocity field have been compared to experimental data. These results are in good agreement with the experiments.},
  author       = {Moroianu, Dragos and Karlsson, Arne and Fuchs, Laszlo},
  keyword      = {Vortex systems,Flow fields,Large Eddy simulations (LES),Dynamic models},
  language     = {eng},
  pages        = {209--217},
  publisher    = {ARRAY(0x7d1fd38)},
  series       = {Proceedings of the ASME Turbo Expo 2004},
  title        = {LES of the flow and particle ingestion into an air intake of a jet engine running on the ground},
  volume       = {2},
  year         = {2004},
}