Stratified turbulent flames: Recent advances in understanding the influence of mixture inhomogeneities on premixed combustion and modeling challenges

AN Lipatnikov - Progress in Energy and Combustion Science, 2017 - Elsevier
The goals of the present review paper are;(i) to introduce experimental facilities and
numerical tools applied to investigating inhomogeneously premixed flames,(ii) to summarize …

Synergistic interactions of thermodiffusive instabilities and turbulence in lean hydrogen flames

L Berger, A Attili, H Pitsch - Combustion and Flame, 2022 - Elsevier
Interactions of thermodiffusive instabilities and turbulence have been investigated by large-
scale Direct Numerical Simulations (DNS) in this work. Two DNS of turbulent premixed lean …

Recent advances in understanding of thermal expansion effects in premixed turbulent flames

VA Sabelnikov, AN Lipatnikov - Annual Review of Fluid …, 2017 - annualreviews.org
When a premixed flame propagates in a turbulent flow, not only does turbulence affect the
burning rate (eg, by wrinkling the flame and increasing its surface area), but also the heat …

[HTML][HTML] Intrinsic instabilities of hydrogen and hydrogen/ammonia premixed flames: Influence of equivalence ratio, fuel composition and pressure

J Gaucherand, D Laera, C Schulze-Netzer… - Combustion and …, 2023 - Elsevier
Premixed lean hydrogen-air flames exhibit instabilities due to hydrodynamic instabilities but
also thermo-diffusive instabilities. However, in the case of ammonia/hydrogen blends, the …

Direct numerical simulation of premixed flame boundary layer flashback in turbulent channel flow

A Gruber, JH Chen, D Valiev, CK Law - Journal of Fluid Mechanics, 2012 - cambridge.org
Direct numerical simulations are performed to investigate the transient upstream
propagation (flashback) of premixed hydrogen–air flames in the boundary layer of a fully …

The effect of pressure on lean premixed hydrogen-air flames

M Rieth, A Gruber, JH Chen - Combustion and Flame, 2023 - Elsevier
The effect of pressure on the propagation of lean premixed hydrogen-air flames is
investigated numerically with a hierarchy of canonical configurations including direct …

Flame speed and self-similar propagation of expanding turbulent premixed flames

S Chaudhuri, F Wu, D Zhu, CK Law - Physical review letters, 2012 - APS
In this Letter we present turbulent flame speeds and their scaling from experimental
measurements on constant-pressure, unity Lewis number expanding turbulent flames …

Turbulent flame speed of NH3/CH4/H2/H2O/air-mixtures: Effects of elevated pressure and Lewis number

S Wang, AM Elbaz, G Wang, Z Wang, WL Roberts - Combustion and Flame, 2023 - Elsevier
This study investigated the turbulent flame speed (ST) of NH 3/CH 4/H 2/air mixtures
subjected to differential-diffusion effect characterized by sub-unity Lewis number (Le) at …

Propagation of premixed flames in the presence of Darrieus–Landau and thermal diffusive instabilities

F Creta, PE Lapenna, R Lamioni, N Fogla… - Combustion and …, 2020 - Elsevier
We study the propagation of premixed flames, in the absence of external turbulence, under
the effect of both hydrodynamic (Darrieus–Landau) and thermodiffusive instabilities. The …

Self-similar propagation and turbulent burning velocity of CH4/H2/air expanding flames: Effect of Lewis number

X Cai, J Wang, Z Bian, H Zhao, M Zhang… - Combustion and Flame, 2020 - Elsevier
In this study we clarify the role of differential diffusion characterized by effective Lewis
number, Le eff, on the self-similar accelerative propagation and the associated turbulent …