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The hybrid RANS/LES of partially premixed supersonic combustion using G/Z flamelet model

Wu, Jinshui; Wang, Zhenguo; Bai, Xue-Song LU ; Sun, Mingbo and Wang, Hongbo (2016) In Acta Astronautica 127. p.375-383
Abstract

In order to describe partially premixed supersonic combustion numerically, G/Z flamelet model is developed and compared with finite rate model in hybrid RANS/LES simulation to study the strut-injection supersonic combustion flow field designed by the German Aerospace Center. A new temperature calculation method based on time-splitting method of total energy is introduced in G/Z flamelet model. Simulation results show that temperature predictions in partially premixed zone by G/Z flamelet model are more consistent with experiment than finite rate model. It is worth mentioning that low temperature reaction zone behind the strut is well reproduced. Other quantities such as average velocity and average velocity fluctuation obtained by... (More)

In order to describe partially premixed supersonic combustion numerically, G/Z flamelet model is developed and compared with finite rate model in hybrid RANS/LES simulation to study the strut-injection supersonic combustion flow field designed by the German Aerospace Center. A new temperature calculation method based on time-splitting method of total energy is introduced in G/Z flamelet model. Simulation results show that temperature predictions in partially premixed zone by G/Z flamelet model are more consistent with experiment than finite rate model. It is worth mentioning that low temperature reaction zone behind the strut is well reproduced. Other quantities such as average velocity and average velocity fluctuation obtained by developed G/Z flamelet model are also in good agreement with experiment. Besides, simulation results by G/Z flamelet also reveal the mechanism of partially premixed supersonic combustion by the analyses of the interaction between turbulent burning velocity and flow field.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Combustion, G/Z flamelet model, Partially premixed, Supersonic
in
Acta Astronautica
volume
127
pages
9 pages
publisher
Elsevier
external identifiers
  • Scopus:84975246832
ISSN
0094-5765
DOI
10.1016/j.actaastro.2016.06.021
language
English
LU publication?
yes
id
c22b0697-8ae1-4e87-baf8-593e1909d7f8
date added to LUP
2016-10-17 09:53:37
date last changed
2016-10-17 09:53:37
@misc{c22b0697-8ae1-4e87-baf8-593e1909d7f8,
  abstract     = {<p>In order to describe partially premixed supersonic combustion numerically, G/Z flamelet model is developed and compared with finite rate model in hybrid RANS/LES simulation to study the strut-injection supersonic combustion flow field designed by the German Aerospace Center. A new temperature calculation method based on time-splitting method of total energy is introduced in G/Z flamelet model. Simulation results show that temperature predictions in partially premixed zone by G/Z flamelet model are more consistent with experiment than finite rate model. It is worth mentioning that low temperature reaction zone behind the strut is well reproduced. Other quantities such as average velocity and average velocity fluctuation obtained by developed G/Z flamelet model are also in good agreement with experiment. Besides, simulation results by G/Z flamelet also reveal the mechanism of partially premixed supersonic combustion by the analyses of the interaction between turbulent burning velocity and flow field.</p>},
  author       = {Wu, Jinshui and Wang, Zhenguo and Bai, Xue-Song and Sun, Mingbo and Wang, Hongbo},
  issn         = {0094-5765},
  keyword      = {Combustion,G/Z flamelet model,Partially premixed,Supersonic},
  language     = {eng},
  month        = {10},
  pages        = {375--383},
  publisher    = {ARRAY(0x7aa26a0)},
  series       = {Acta Astronautica},
  title        = {The hybrid RANS/LES of partially premixed supersonic combustion using G/Z flamelet model},
  url          = {http://dx.doi.org/10.1016/j.actaastro.2016.06.021},
  volume       = {127},
  year         = {2016},
}