Zobrazeno 1 - 10
of 75
pro vyhledávání: '"James R. Dawson"'
Autor:
Yi Hao Kwah, Pasquale Walter Agostinelli, Stéphane Richard, Gorka Exilard, Stéphane Pascaud, Laurent Gicquel, James R. Dawson
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 144
In this paper we investigate the effect of strong azimuthal swirl on ignition dynamics in a laboratory-scale annular combustor. Bulk azimuthal swirl was produced by a novel angled injector configuration, producing swirling jet flames oriented downwar
Autor:
Nicholas A. Worth, James R. Dawson, Yi Hao Kwah, Byeonguk Ahn, Thomas Indlekofer, Marek Mazur, Samuel Wiseman
Publikováno v:
Combustion and Flame
Combustion and Flame, Elsevier, 2021, 228, pp.375-387. ⟨10.1016/j.combustflame.2021.02.015⟩
Combustion and Flame, Elsevier, 2021, 228, pp.375-387. ⟨10.1016/j.combustflame.2021.02.015⟩
The present work introduces an annular combustion chamber operated at intermediate pressures. The combustor is operated with CH-H blends leading to a variety of azimuthal combustion instabilities. The influence of the hydrogen content, the air mass f
Publikováno v:
Volume 3B: Combustion, Fuels, and Emissions.
Ammonia is a promising hydrogen and energy carrier but also a challenging fuel to use in gas turbines, due to its low flame speed, limited flammability range, and the production of NOx from fuel-bound nitrogen. Previous experimental and theoretical w
Publikováno v:
Proceedings of the Combustion Institute, 38 (4)
Proceedings of the Combustion Institute
Proceedings of the Combustion Institute
Proceedings of the Combustion Institute, 38 (4)
ISSN:1540-7489
ISSN:1873-2704
ISSN:1540-7489
ISSN:1873-2704
Publikováno v:
Combustion and Flame, 223
Combustion and Flame
Combustion and Flame
Self-excited thermoacoustic instabilities in symmetric annular combustion chambers typically give rise to spinning, standing and mixed azimuthal modes which are time-varying in nature and occur in a highly noisy environment due to turbulent combustio
Publikováno v:
Proceedings of the Combustion Institute. 38:2869-2876
Ammonia has been identified as a promising energy carrier that produces zero carbon dioxide emissions when used as a fuel in gas turbines. Although the combustion properties of pure ammonia are poorly suited for firing of gas turbine combustors, blen
Publikováno v:
Journal of Fluid Mechanics
A40
A40
We explore experimentally whether axisymmetry breaking can be exploited for the open-loop control of a prototypical hydrodynamic oscillator, namely a low-density inertial jet exhibiting global self-excited axisymmetric oscillations. We find that when
Publikováno v:
Combustion and Flame
This paper investigates how targeted interference between two well characterized sources of hydrodynamic disturbances can modify the response of premixed bluff body stabilised H 2 / CH 4 flames with and without swirl. We introduce modulations into th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2780b3376d5375766b964c64ad0fbdd1
https://hdl.handle.net/11250/2827940
https://hdl.handle.net/11250/2827940
Publikováno v:
112274-?
Combustion and Flame
Combustion and Flame
In this study, the heat release rate (HRR) response during self-excited azimuthal thermoacoustic instabilities in a pressurized annular combustor is investigated for hydrogen/methane blended flames. The equivalence ratio and hydrogen power fraction w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8fffc436c56ac07257defc4345a8691
https://hdl.handle.net/11250/3041876
https://hdl.handle.net/11250/3041876
Publikováno v:
Proceedings of the Combustion Institute
In this paper we demonstrate direct suppression of self-excited thermoacoustic instabilities over a range of operating conditions using targeted convective-acoustic interference. Premixed hydrogen enriched methane-air flames were confined in a cylind
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13c5a921a613927b3cf607a3b0a4cd65
https://hdl.handle.net/11250/3046507
https://hdl.handle.net/11250/3046507