Analysis of flame propagation mechanisms during light-round in an annular spray flame combustor: the impact of wall heat transfer and two-phase flow

K Töpperwien, S Puggelli, R Vicquelin - Combustion and Flame, 2022 - Elsevier
Ignition in annular multi-burner combustors is marked by a succession of four phases,
ending with a characteristic flame expansion from burner to burner, often referred to as light …

Assessment of the LES-FGM framework for capturing stable and unstable modes in a hydrogen/methane fuelled premixed combustor

JZ Ho, S Jella, M Talei, G Bourque, T Indlekofer… - Combustion and …, 2023 - Elsevier
The main objective of this paper is to assess the capability of compressible Large Eddy
Simulations (LES) to capture azimuthal combustion instability. The thickened flame model …

[HTML][HTML] Flame front dynamics during ignition of lean premixed H2/Air and CH4/Air flames

T Yahou, JR Dawson, T Poinsot, L Selle… - Combustion and …, 2024 - Elsevier
This study investigates differences in flame dynamics during the ignition of a premixed
burner powered by lean CH 4/air and H 2/air mixtures with time-resolved OH-PLIF and PIV …

The Effect of Methane–Ammonia and Methane–Hydrogen Blends on Ignition and Light-Around in an Annular Combustor

YH Kwah, S Wiseman… - … of Engineering for …, 2023 - asmedigitalcollection.asme.org
The use of hydrogen and ammonia in gas turbines, either alone or blended with natural gas,
poses various technical challenges for combustion systems, including ignition. Depending …

Effect of Strong Azimuthal Swirl on Ignition and Light-Around in an Annular Combustor

YH Kwah, PW Agostinelli… - … for Gas Turbines …, 2022 - asmedigitalcollection.asme.org
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 …

Numerical analysis of relight in an annular spray-flame combustor with preheated walls

K Töpperwien, R Vicquelin - Proceedings of the Combustion Institute, 2023 - Elsevier
Successful relight of aero-engine combustors is subjected to certification specifications and
must be ensured under various scenarios which can involve substantially different …

Large Eddy Simulation and Acoustic Analysis of Combustion Instability in an Annular Combustor with Low-Swirl Flames

W Liu, R Xue, J Jiang, H Su, X Wang - ACS omega, 2024 - ACS Publications
Self-excited combustion instability in an annular combustor with low-swirl flames is studied
with a combination of large eddy simulation (LES) and acoustic solvers. Acoustic analysis …

Analysis of the ignition dynamics of H 2-enriched premixed flames using high speed PIV/OH-PLIF

T Yahou, T Schuller, J Dawson - 11th european combustion meeting …, 2023 - hal.science
This work combines time-resolved PIV and OH-PLIF to analyze the flame dynamics, from
kernel initiation to flame stabilization. Ignition experiments are conducted for increasing …