Stratified and hydrogen combustion techniques for higher turndown and lower emissions in gas turbines

MA Nemitallah, MDA Haque… - Journal of …, 2022 - asmedigitalcollection.asme.org
This review overviews combustion technologies for reduced emissions and better fuel
economy in the industrial gas turbine. Lean premixed combustion (LPM) technology is …

Characterizing nonlinear dynamic features of self-sustained thermoacoustic oscillations in a premixed swirling combustor

Y Sun, Z Rao, D Zhao, B Wang, D Sun, X Sun - Applied Energy, 2020 - Elsevier
To meet stringent NO x emission requirements, lean premixed swirling combustion
technology is widely applied in power generation and propulsion systems. However, such …

Impact of wall heat transfer in Large Eddy Simulation of flame dynamics in a swirled combustion chamber

PW Agostinelli, D Laera, I Boxx, L Gicquel… - Combustion and …, 2021 - Elsevier
Abstract Large Eddy Simulation (LES) is a fundamental research tool to study gas turbines
and aero-engine combustors. In LES, although rarely addressed systematically, it is known …

On the impact of H2-enrichment on flame structure and combustion dynamics of a lean partially-premixed turbulent swirling flame

PW Agostinelli, D Laera, I Chterev, I Boxx… - Combustion and …, 2022 - Elsevier
Abstract Large Eddy Simulation (LES) with Conjugate Heat Transfer (CHT) is used to
analyze the impact of H 2-enrichment on the flame structure and combustion dynamics of a …

Flame interactions in a stratified swirl burner: Flame stabilization, combustion instabilities and beating oscillations

X Han, D Laera, D Yang, C Zhang, J Wang, X Hui… - Combustion and …, 2020 - Elsevier
The present article investigates the interactions between the pilot and main flames in a novel
stratified swirl burner using both experimental and numerical methods. Experiments are …

Dual-fuel, dual-swirl burner for the mitigation of thermoacoustic instabilities in turbulent ammonia-hydrogen flames

A Katoch, TF Guiberti, DV de Campos… - Combustion and Flame, 2022 - Elsevier
In this paper, a novel dual-fuel, dual-swirl burner is presented and its potential to mitigate
thermoacoustic coupling for ammonia-hydrogen-air flames is explored. The key feature of …

Co-firing hydrogen and dimethyl ether in a gas turbine model combustor: influence of hydrogen content and comparison with methane

Z Xi, T Lian, X Shi, Z Liu, S Han, X Yang… - International Journal of …, 2022 - Elsevier
To promote the utilization of hydrogen (H 2) in existing gas turbines, dimethyl ether (DME)
was used to co-fire with H 2 in a model combustor. The swirl combustion characteristics of …

Monitoring combustion instabilities of stratified swirl flames by feature extractions of time-averaged flame images using deep learning method

Y Zhou, C Zhang, X Han, Y Lin - Aerospace Science and Technology, 2021 - Elsevier
The present article investigates the application of deep learning methods to monitor
combustion instabilities based on time-averaged flame images. Experiments on BASIS …

The effects of premixed pilot-stage on combustion instabilities in stratified swirling flames: A large eddy simulation study

G Lv, X Liu, Z Zhang, S Li, E Liu, H Zheng - Energy, 2023 - Elsevier
Abstract Large Eddy Simulation (LES) is conducted for the combustion instabilities of the
stratified swirling flames. Two different pilot-stage equivalence ratios (Φ p), 0 (lifted flame) …

Nonlinear dynamic characteristics of self-excited thermoacoustic instabilities in premixed swirling flames

L Ji, J Wang, W Zhang, D Li, G Hu, Z Huang - Experimental Thermal and …, 2024 - Elsevier
The nonlinear behavior of thermoacoustic oscillation for premixed swirl flames fueled with
CH 4/air mixtures is experimentally studied by changing the equivalence ratio Φ, combustor …