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Effect of Evaporation on the Combustion Behaviour of Kerosene Spray Flame

[+] Author Affiliations
W. Ahmadi, M. Chrigui, A. Sadiki

TU Darmstadt, Darmstadt, Germany

G. D. Ngoma

Université du Québec en Abitibi-Témiscamingue, Rouyn-Noranda, QC, Canada

Paper No. GT2010-22641, pp. 533-540; 8 pages
doi:10.1115/GT2010-22641
From:
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 2: Combustion, Fuels and Emissions, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4397-0 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME

abstract

The aim of this paper is to investigate numerically the effects of the evaporation rate on combustion of kerosene sprays in a partially premixed pre-vaporized combustion chamber. The simulations are carried out by means of a Eulerian-Lagrangian approach under consideration of a full two-way coupling. Two different evaporation models (equilibrium and non-equilibrium ansatz) based on the uniform temperature assumption were used. The combustion is described by a BML like model modified for partially premixed combustion description as encountered in LPP (Bray-Moss-Libby Modell) configuration. Dodecane, whose chemistry was described by the flamelet model, was used as a surrogate for kerosene. To isolate the effect of evaporation on spray combustion, liquid droplets have been sprayed at different temperature conditions in a partially premixed pre-vaporized combustor as experimentally investigated in [23]. It turned out that the non-equilibrium performs well and allows achieving an overall agreement with experimental data. With this confidence in place, some parameter studies could be carried out and additional informations, that were not experimentally available, could be extracted to gain insights relevant to understanding the effects under study.

Copyright © 2010 by ASME

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