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Large eddy simulation of spray dispersion and mixing in a swirl stabilized gas turbine burner

Salewski, Mirko LU ; Duwig, Christophe LU ; Milosavljevic, Vladimir LU and Fuchs, Laszlo LU (2007) 45th AIAA Aerospace Sciences Meeting 2007 In Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting 16. p.11214-11226
Abstract
The dispersion of droplets and mixing of evaporated gases in a swirl stabilized gas turbine combustor are studied with an Eulerian / Lagrangian approach. The results are shown to be highly sensitive to the assumed droplet injection diameter. Injection of smaller droplet diameters lead to significantly higher local equivalence ratios and temperature drops, and increased gas phase densities, enhancing further the breakup of the droplets non-linearly. A spiraling rotational mode in the combustor, the precessing vortex core, leads to time-dependent local mixture fractions with bi-modal probability density functions. Small droplets and evaporated gases can enter the swirl generator intermittently with a frequency related to this rotational mode.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Phase density, Spray dispersion, Temperature drop, Swirl generators
in
Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
volume
16
pages
11214 - 11226
publisher
American Institute of Aeronautics and Astronautics
conference name
45th AIAA Aerospace Sciences Meeting 2007
external identifiers
  • Scopus:34347258856
language
English
LU publication?
yes
id
b1271130-fcbe-4d45-8656-e31c603083db (old id 643419)
alternative location
http://pdf.aiaa.org/preview/CDReadyMASM07_1064/PV2007_924.pdf
date added to LUP
2007-12-04 11:17:31
date last changed
2017-02-19 04:30:50
@inproceedings{b1271130-fcbe-4d45-8656-e31c603083db,
  abstract     = {The dispersion of droplets and mixing of evaporated gases in a swirl stabilized gas turbine combustor are studied with an Eulerian / Lagrangian approach. The results are shown to be highly sensitive to the assumed droplet injection diameter. Injection of smaller droplet diameters lead to significantly higher local equivalence ratios and temperature drops, and increased gas phase densities, enhancing further the breakup of the droplets non-linearly. A spiraling rotational mode in the combustor, the precessing vortex core, leads to time-dependent local mixture fractions with bi-modal probability density functions. Small droplets and evaporated gases can enter the swirl generator intermittently with a frequency related to this rotational mode.},
  author       = {Salewski, Mirko and Duwig, Christophe and Milosavljevic, Vladimir and Fuchs, Laszlo},
  booktitle    = {Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting},
  keyword      = {Phase density,Spray dispersion,Temperature drop,Swirl generators},
  language     = {eng},
  pages        = {11214--11226},
  publisher    = {American Institute of Aeronautics and Astronautics},
  title        = {Large eddy simulation of spray dispersion and mixing in a swirl stabilized gas turbine burner},
  volume       = {16},
  year         = {2007},
}