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The feasibility of mode control in rotating detonation engine

Deng, Ya-Li; Ma, Hu; Xu, Can; Liu, Xiao LU and Zhou, Changsheng (2018) In Applied Thermal Engineering 129. p.1538-1550
Abstract

The feasibility of mode control in rotating detonation engine is investigated through regulating the global equivalence ratio during the test under different air mass flow rates, chamber lengths, and blockage ratios at the exit, including the mode transitions between the single wave and two co-rotating waves, two counter-rotating waves and longitudinal pulsed detonation, two co-rotating waves and longitudinal pulsed detonation. The rotating detonation wave propagating in the mixture with fuel concentration gradients under single wave mode is also tested. The results show that, the rotating detonation wave has the ability to adapt itself to the changing of equivalence ratio. The decreasing of the equivalence ratio leads to the poor... (More)

The feasibility of mode control in rotating detonation engine is investigated through regulating the global equivalence ratio during the test under different air mass flow rates, chamber lengths, and blockage ratios at the exit, including the mode transitions between the single wave and two co-rotating waves, two counter-rotating waves and longitudinal pulsed detonation, two co-rotating waves and longitudinal pulsed detonation. The rotating detonation wave propagating in the mixture with fuel concentration gradients under single wave mode is also tested. The results show that, the rotating detonation wave has the ability to adapt itself to the changing of equivalence ratio. The decreasing of the equivalence ratio leads to the poor reactivity of mixtures, which decreases the wave speed under the single wave mode, and results in the transition from two co-rotating waves to single wave. The increasing of the chamber length decreases the critical equivalence ratio for the emergence of longitudinal pulsed detonation. Increasing the chamber length leads to the transition from two counter-rotating waves to longitudinal pulsed detonation at relatively low equivalence ratio. This paper demonstrates the feasibility of mode control in rotating detonation engine, and promotes the application of rotating detonation engine.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Chamber length, Controllable transition, Fuel concentration gradient, Mode transition, Rotating detonation engine
in
Applied Thermal Engineering
volume
129
pages
13 pages
publisher
Elsevier
external identifiers
  • scopus:85032787595
ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2017.10.146
language
English
LU publication?
yes
id
e9ad6876-8858-4d98-8942-f09378b00699
date added to LUP
2017-11-14 08:26:29
date last changed
2018-01-07 12:25:44
@article{e9ad6876-8858-4d98-8942-f09378b00699,
  abstract     = {<p>The feasibility of mode control in rotating detonation engine is investigated through regulating the global equivalence ratio during the test under different air mass flow rates, chamber lengths, and blockage ratios at the exit, including the mode transitions between the single wave and two co-rotating waves, two counter-rotating waves and longitudinal pulsed detonation, two co-rotating waves and longitudinal pulsed detonation. The rotating detonation wave propagating in the mixture with fuel concentration gradients under single wave mode is also tested. The results show that, the rotating detonation wave has the ability to adapt itself to the changing of equivalence ratio. The decreasing of the equivalence ratio leads to the poor reactivity of mixtures, which decreases the wave speed under the single wave mode, and results in the transition from two co-rotating waves to single wave. The increasing of the chamber length decreases the critical equivalence ratio for the emergence of longitudinal pulsed detonation. Increasing the chamber length leads to the transition from two counter-rotating waves to longitudinal pulsed detonation at relatively low equivalence ratio. This paper demonstrates the feasibility of mode control in rotating detonation engine, and promotes the application of rotating detonation engine.</p>},
  author       = {Deng, Ya-Li and Ma, Hu and Xu, Can and Liu, Xiao and Zhou, Changsheng},
  issn         = {1359-4311},
  keyword      = {Chamber length,Controllable transition,Fuel concentration gradient,Mode transition,Rotating detonation engine},
  language     = {eng},
  month        = {01},
  pages        = {1538--1550},
  publisher    = {Elsevier},
  series       = {Applied Thermal Engineering},
  title        = {The feasibility of mode control in rotating detonation engine},
  url          = {http://dx.doi.org/10.1016/j.applthermaleng.2017.10.146},
  volume       = {129},
  year         = {2018},
}