NO and OH* emission characteristics of very-lean to stoichiometric ammonia–hydrogen–air swirl flames

X Zhu, AA Khateeb, TF Guiberti, WL Roberts - Proceedings of the …, 2021 - Elsevier
One of the main concerns regarding ammonia combustion is its tendency to yield high nitric
oxide (NO) emissions. Burning ammonia under slightly rich conditions reduces the NO mole …

Effect of swirl on combustion dynamics in a lean-premixed swirl-stabilized combustor

Y Huang, V Yang - Proceedings of the combustion institute, 2005 - Elsevier
The effect of inlet swirl on the flow development and combustion dynamics in a lean-
premixed swirl-stabilized combustor has been numerically investigated using a large-eddy …

The structure of turbulent stratified and premixed methane/air flames II: Swirling flows

MS Sweeney, S Hochgreb, MJ Dunn, RS Barlow - Combustion and Flame, 2012 - Elsevier
Experimental results are presented from a series of turbulent methane/air stratified flames
stabilized on a swirl burner. Nine operating conditions are considered, systematically …

Enhancement of flame blowout limits by the use of swirl

D Feikema, RH Chen, JF Driscoll - Combustion and Flame, 1990 - Elsevier
The blowout limits of a number of swirl-stabilized, nonpremixed flames were measured, and
the observed trends are successfully explained by applying certain concepts that previously …

Experimental and numerical investigation of two flame stabilization regimes observed in a dual swirl H2-air coaxial injector

A Aniello, D Laera, S Marragou, H Magnes, L Selle… - Combustion and …, 2023 - Elsevier
This study investigates H 2-air flames obtained with a laboratory scale coaxial dual-swirl
injector in which fuel and oxidizer are injected separately. Two flame archetypes are …

The role of the recirculation vortex in improving fuel-air mixing within swirling flames

RH Chen, JF Driscoll - Symposium (International) on Combustion, 1989 - Elsevier
An important example that shows how a flame interacts with a vortex is the case of a
swirlstabilized flame. Such a flame essentially is a toroidal vortex into which a jet of fuel is …

Nitric oxide levels of jet diffusion flames: effects of coaxial air and other mixing parameters

RH Chen, JF Driscoll - Symposium (International) on combustion, 1991 - Elsevier
This paper quantifies the effects of certain fluid mechanical mixing perameters, such as
coaxial air velocity, Reynolds number and Damkohler number, on the total nitric oxide …

A comparison of bluff-body and swirl-stabilized flames

RH Chen, JF Driscoll, J Kelly, M Namazian… - Combustion science …, 1990 - Taylor & Francis
Bluff-body and swirl-stabilized flames are similar in that they represent, in simplest terms, the
fundamental interaction between a fuel jet and a surrounding toroidal vortex. The vortex in …

Effects of fuel/air distribution on the NH3/CH4 flame stability limit and NOx emission in a dual-annular burner

Y Li, J Sun, Q Huang, R Kneer, S Li - Combustion and Flame, 2024 - Elsevier
Fuel-air mixing strategy always plays an important role in NO x mitigation during
ammonia/methane (NH 3/CH 4) co-combustion. In this paper, a novel dual-annular bluff …

[HTML][HTML] Characterisation of turbulent non-premixed hydrogen-blended flames in a scaled industrial low-swirl burner

AJ Gee, N Smith, A Chinnici, PR Medwell - International Journal of …, 2024 - Elsevier
The performance of a scaled industrial, non-premixed, low-swirl burner design was
experimentally investigated for hydrogen addition to natural gas. Two strategies for …