Curvature Effect in Shear Flow: Slowdown of Turbulent Flame Speeds with Markstein Number
Sign Up to like & getrecommendations! Published in 2017 at "Communications in Mathematical Physics"
DOI: 10.1007/s00220-017-3060-1
Abstract: It is well-known in the combustion community that curvature effect in general slows down flame propagation speeds because it smooths out wrinkled flames. However, such a folklore has never been justified rigorously. In this paper,… read more here.
Keywords: flame; turbulent flame; curvature effect; markstein number ... See more keywords
Turbulent Flame Speed Dependencies in Lean Methane-Air Mixtures under Engine Relevant Conditions
Sign Up to like & getrecommendations! Published in 2017 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2017.02.023
Abstract: Abstract Direct numerical simulations are carried out to study the behavior of turbulent flames propagating in lean methane-air mixtures of equivalence ratio 0.5 and for non-dimensional turbulence intensities (urms/SL) of 2-25. The turbulent Reynolds number… read more here.
Keywords: methane air; turbulent flame; flame; flame speed ... See more keywords
Revisiting the relation between premixed flame brush thickness and turbulent burning velocities from Ken Bray’s notes
Sign Up to like & getrecommendations! Published in 2021 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2021.111706
Abstract: Abstract Applying the Bray-Moss-Libby (BML) bi-modal asymptotic limit to a progress variable signal in a premixed turbulent flame, a relation is established between the variation rate of the mean turbulent flame brush thickness, the flame… read more here.
Keywords: turbulent flame; flame; turbulent burning; flame brush ... See more keywords
Effect of initial pressure on flame–shock interaction of hydrogen–air premixed flames
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Hydrogen Energy"
DOI: 10.1016/j.ijhydene.2017.03.099
Abstract: Abstract By utilizing a newly designed constant volume combustion bomb (CVCB), turbulent flame combustion phenomena are investigated using hydrogen–air mixture under the initial pressures of 1 bar, 2 bar and 3 bar, including flame acceleration, turbulent flame propagation… read more here.
Keywords: turbulent flame; flame; hydrogen; initial pressure ... See more keywords
The evolution of fast turbulent deflagrations to detonations
Sign Up to like & getrecommendations! Published in 2023 at "Physics of Fluids"
DOI: 10.1063/5.0144663
Abstract: We use advanced experimental techniques to explore turbulence-induced deflagration-to-detonation transition (tDDT) in hydrogen–air mixtures. We analyze the full sequence of turbulent flame evolution from fast deflagration-to-detonation using simultaneous direct measurements of pressure, turbulence, and flame,… read more here.
Keywords: deflagrations detonations; flame; turbulent deflagrations; turbulent flame ... See more keywords
Coherent Anti-Stokes Raman Scattering Measurements of Time and Length Scales of Temperature Fluctuations in a Turbulent Flame
Sign Up to like & getrecommendations! Published in 2023 at "Applied Spectroscopy"
DOI: 10.1177/00037028231160797
Abstract: The ability to derive temporal and spatial scales of “instantaneous” local temperature variations in a turbulent flame by means of coherent anti-Stokes Raman scattering (CARS) spectroscopy is demonstrated, for the first time to our knowledge.… read more here.
Keywords: time; stokes raman; turbulent flame; raman scattering ... See more keywords