An investigation into flashback and blow-off for premixed flames stabilized without a recirculation vortex

We have recently shown that premixed CH4/air flames anchored behind flame holders can stabilize in two stabilization regimes characterised by the presence or absence of a recirculation vortex [1]. Focus present work is on underlying mechanisms governing without for methane-air flames. revisit definition anchoring location and define new which results from stretch considerations rather than heat loss considerations. This be unambiguously defined different sizes. It argued such an more relevant stabilized with sharp corners do take into account multi-dimensional nature transfer holder as well. A quantitative assessment transfer, preferential diffusion effects then carried out at elucidating their impact speed function size. New insights blow-off, flashback emergence are obtained result this investigation.