[HTML][HTML] Thermodiffusively-unstable lean premixed hydrogen flames: Phenomenology, empirical modelling, and thermal leading points
Thermodiffusively-unstable lean premixed hydrogen flames are investigated using three-
dimensional direct numerical simulation with finite-rate chemical kinetics. A large number of …
dimensional direct numerical simulation with finite-rate chemical kinetics. A large number of …
Experimental study of the influence of Lewis number, laminar flame thickness, temperature, and pressure on turbulent flame speed using hydrogen and methane fuels
HY Hsieh, SM Mousavi, AN Lipatnikov… - Proceedings of the …, 2024 - Elsevier
To experimentally explore the influence of Lewis number L e, laminar flame thickness δ L,
pressure P, and unburned gas temperature T u on turbulent flame speed ST, a set of …
pressure P, and unburned gas temperature T u on turbulent flame speed ST, a set of …
[HTML][HTML] Are differential diffusion effects of importance when burning hydrogen under elevated pressures and temperatures?
SM Mousavi, AN Lipatnikov - International Journal of Hydrogen Energy, 2024 - Elsevier
A ratio of turbulent burning velocity to laminar flame speed is well known to be abnormally
high in lean hydrogen-air mixtures, with this phenomenon being commonly attributed to …
high in lean hydrogen-air mixtures, with this phenomenon being commonly attributed to …
Transition from turbulence-dominated to instability-dominated combustion regime in lean hydrogen-air flames
To explore the importance of thermodiffusive and hydrodynamic instabilities of laminar
flames in turbulent flows, previously generated direct numerical simulations of statistically …
flames in turbulent flows, previously generated direct numerical simulations of statistically …
Accurate prediction of confined turbulent boundary layer flashback through a critically strained flame model
A novel boundary layer flashback model is developed based on previous measurements
that showed flashback limits may be related to strained premixed flame extinction. According …
that showed flashback limits may be related to strained premixed flame extinction. According …
Displacement speed, flame surface density and burning rate in highly turbulent premixed flames characterized by low Lewis numbers
Direct numerical simulation data obtained from four pairs of turbulent, lean hydrogen–air,
complex-chemistry flames are analysed to explore the influence of molecular diffusion on …
complex-chemistry flames are analysed to explore the influence of molecular diffusion on …
Area increase and stretch factor in lean hydrogen-air turbulent flames
Analyzed in this paper are three-dimensional Direct Numerical Simulation (DNS) data
obtained earlier by the present authors from (i) 16 statistically planar and one-dimensional …
obtained earlier by the present authors from (i) 16 statistically planar and one-dimensional …
A priori test of perfectly stirred reactor approach to evaluating mean fuel consumption and heat release rates in highly turbulent premixed flames
AN Lipatnikov - International Journal of Engine Research, 2023 - journals.sagepub.com
Unsteady three-dimensional Direct Numerical Simulation (DNS) data obtained earlier by
Dave et al.(J Fluid Mech 2020; 884: A46) from a statistically planar and one-dimensional …
Dave et al.(J Fluid Mech 2020; 884: A46) from a statistically planar and one-dimensional …
[HTML][HTML] A priori assessment of a simple approach to evaluating burning rate in large eddy simulations of premixed turbulent combustion
AN Lipatnikov - Physics of Fluids, 2024 - pubs.aip.org
This paper aims at assessing a hypothesis that resolution required to evaluate fuel
consumption and heat release rates by directly (ie, without a subgrid model of unresolved …
consumption and heat release rates by directly (ie, without a subgrid model of unresolved …
Temperature effect on turbulent burning velocity of lean premixed hydrogen/air flames
Hydrogen has drawn great attention in recent years as a carbon-free fuel. The turbulent
burning velocity ( ST) is an important parameter for the design and modeling of hydrogen …
burning velocity ( ST) is an important parameter for the design and modeling of hydrogen …