[HTML][HTML] Experimental study on effects of ammonia enrichment on the thermoacoustic instability of lean premixed swirling methane flames

C Liu, H Yang, C Ruan, L Yu, J Nan, J Li, X Lu - Fuel, 2024 - Elsevier
Ammonia (NH 3) has recently emerged as a promising carbon-free energy carrier. Further
development and application of NH 3 as fuel in the gas turbine industry can significantly …

Swirl flame boundary layer flashback at elevated pressure: Modes of propagation and effect of hydrogen addition

D Ebi, R Bombach, P Jansohn - Proceedings of the Combustion Institute, 2021 - Elsevier
Operating lean-premixed gas turbine burners with fuels containing large amounts of
hydrogen severely increases the risk of flame flashback. Enabling fuel-flexible burners, ie …

A combined oscillation cycle involving self-excited thermo-acoustic and hydrodynamic instability mechanisms

D Fredrich, WP Jones, AJ Marquis - Physics of Fluids, 2021 - pubs.aip.org
The paper examines the combined effects of several interacting thermo-acoustic and
hydrodynamic instability mechanisms that are known to influence self-excited combustion …

Insights into flashback-to-flameholding transition of hydrogen-rich stratified swirl flames

R Ranjan, NT Clemens - Proceedings of the Combustion Institute, 2021 - Elsevier
In this study, we investigate the flame stabilization behavior in hydrogen-enriched stratified
swirl flames after the flame flashes back into an annular mixing tube with an axial swirler of …

Numerical investigation of boundary layer flashback of CH4/H2/air swirl flames under different thermal boundary conditions in a bluff‐body swirl burner

H Xia, W Han, X Wei, M Zhang, J Wang… - Proceedings of the …, 2023 - Elsevier
One of the major challenges of applying hydrogen (H 2) enriched fuels in industrial
combustion systems is the risk of flashback that can cause considerable damage on …

Boundary layer flashback limits of hydrogen-methane-air flames in a generic swirl burner at gas turbine-relevant conditions

D Ebi, P Jansohn - Journal of Engineering for Gas …, 2021 - asmedigitalcollection.asme.org
Operating stationary gas turbines on hydrogen-rich fuels offers a pathway to significantly
reduce greenhouse gas emissions in the power generation sector. A key challenge in the …

Effect of inlet flow turbulence on flame–vortex dynamics during thermo-acoustically induced flame flashback in a premixed dump combustor

P Pancharia, V Ramanan, R Sampath… - … Thermal and Fluid …, 2022 - Elsevier
The present article reports the investigation on the effect of inlet flow turbulence on flame–
vortex dynamics during the thermo-acoustically induced flame flashback in a premixed …

Investigation of the applicability of conditioned particle image velocimetry under conditions close to lean blow-off

X Wang, K Liu, C Fu, J Yu, Y Gao - Experiments in Fluids, 2023 - Springer
In recent years, conditioned particle image velocimetry (CPIV) has attracted much attention
for flame front extraction. It is an economical and straightforward technique because the …

Investigation on the effects of swirl-strength on flashback phenomenon of premixed CH4/H2/air flame in a bluff-body swirl burner

L Cheng, H Xia, S Peng, B Pan, S Cui, M Zhang… - International Journal of …, 2024 - Elsevier
Blending a low ratio of hydrogen into traditional hydrocarbon fuels can reduce the
modification in structure of existing combustors. However, even a low hydrogen ratio can …

DNS analysis of boundary layer flashback in turbulent flow with wall-normal pressure gradient

JR Bailey, ES Richardson - Proceedings of the Combustion Institute, 2021 - Elsevier
The presence of swirl in combustion systems produces a marked change in their boundary
layer flashback behaviour. Two aspects of swirling flow are investigated in this study: the …