Instability and mode transition analysis of a hydrogen-rich combustion in a model afterburner

S Nakaya, K Omi, T Okamoto, Y Ikeda, C Zhao… - Proceedings of the …, 2021 - Elsevier
Combustion instabilities were investigated experimentally for a hydrogen-rich combustion in
a model afterburner installed at the end of a high-enthalpy wind tunnel. Air was supplied at …

[HTML][HTML] The influence of hydrogen on the stability of a perfectly premixed combustor

JG Aguilar, E Æsøy, JR Dawson - Combustion and Flame, 2022 - Elsevier
In this paper we investigate the effects of increasing the amount of hydrogen in the fuel
mixture on the stability of a perfectly premixed combustor. Experiments are carried out on a …

Experimental study on the excitation of thermoacoustic instability of hydrogen-methane/air premixed flames under atmospheric and elevated pressure conditions

J Zhang, A Ratner - International Journal of Hydrogen Energy, 2019 - Elsevier
The current work examines the excitation of thermoacoustic instability of lean premixed
hydrogen-methane/air low swirl flames under both atmospheric and elevated pressure …

[HTML][HTML] Heat release rate response of azimuthal thermoacoustic instabilities in a pressurized annular combustor with methane/hydrogen flames

B Ahn, T Indlekofer, JR Dawson, NA Worth - Combustion and Flame, 2022 - Elsevier
In this study, the heat release rate (HRR) response during self-excited azimuthal
thermoacoustic instabilities in a pressurized annular combustor is investigated for …

Fundamental studies in hydrogen-rich combustion: instability mechanisms and dynamic mode selection

RL Speth - 2010 - dspace.mit.edu
Hydrogen-rich alternative fuels are likely to play a significant role in future power generation
systems. The emergence of the integrated gasification combined cycle (IGCC) as one of the …

Effects of temperature ratio on combustion instability in a non-premixed hydrogen-rich ram combustor

K Omi, K Nakayama, S Nakaya, M Tsue… - International Journal of …, 2024 - Elsevier
The effects of the burnt-to-unburnt temperature ratio (T b/T u)(reciprocal density ratio) on
thermoacoustic combustion instability were investigated in a hydrogen-rich ram combustor …

Experimental study of the effects of hydrogen addition on the thermoacoustic instability in a variable-length combustor

J Zhang, A Ratner - International journal of hydrogen energy, 2021 - Elsevier
The current study examined the self-excited thermoacoustic instability of hydrogen/methane
premixed flames using a variable-length combustor (300–1100 mm). The global dynamic …

Effects of acoustic excitation on the combustion instability of hydrogen–methane lean premixed swirling flames

K Deng, Y Zhong, M Wang, Y Zhong, KH Luo - ACS omega, 2020 - ACS Publications
Lean premixed flames are useful for low nitrogen oxide (NO x) emissions but more prone to
induce combustion instability in gas turbines. Combustion instability of a lean premixed …

Revisiting a model for combustion instability involving vortex shedding

B Tulsyan, K Balasubramanian… - Combustion science and …, 2009 - Taylor & Francis
We revisit a simple reduced order model (Matveev, K., and Culick, FE C, 2003, A Model for
Combustion Instability Involving Vortex Shedding, Combust Sci. and Tech., 175, 1059) and …

Experimental investigation of lean-premixed hydrogen combustion instabilities in a can-annular combustion system

K Moon, Y Choi, KT Kim - Combustion and Flame, 2022 - Elsevier
Thermoacoustic interactions in a circumferential network of lean-premixed combustors have
a substantial impact on engine-level dynamics in a can-annular gas turbine combustion …