Hydrogen combustion: features and barriers to its exploitation in the energy transition
E Giacomazzi, G Troiani, A Di Nardo, G Calchetti… - Energies, 2023 - mdpi.com
The aim of this article is to review hydrogen combustion applications within the energy
transition framework. Hydrogen blends are also included, from the well-known hydrogen …
transition framework. Hydrogen blends are also included, from the well-known hydrogen …
[HTML][HTML] Intrinsic instabilities of hydrogen and hydrogen/ammonia premixed flames: Influence of equivalence ratio, fuel composition and pressure
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 …
also thermo-diffusive instabilities. However, in the case of ammonia/hydrogen blends, the …
[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 …
Direct numerical simulations of methane, ammonia-hydrogen and hydrogen turbulent premixed flames
Three turbulent premixed flames with the same unstretched laminar flame speeds and
thicknesses are analyzed and compared using 3D Direct Numerical Simulation (DNS) in a …
thicknesses are analyzed and compared using 3D Direct Numerical Simulation (DNS) in a …
NOx pathways in lean partially premixed swirling H2‐air turbulent flame
Today's climate and energy challenges are driving the use of decarbonised and renewable
alternative fuels in power generation and transportation. Hydrogen as a fuel is a good …
alternative fuels in power generation and transportation. Hydrogen as a fuel is a good …
Turbulent flame speed of NH3/CH4/H2/H2O/air-mixtures: Effects of elevated pressure and Lewis number
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 …
subjected to differential-diffusion effect characterized by sub-unity Lewis number (Le) at …
Experimental and numerical investigations of forced response of multi-element lean-premixed hydrogen flames
Understanding the distinctive thermoacoustic properties of multi-element lean-premixed
hydrogen flames is crucial for the development of hydrogen-capable gas turbines. Extending …
hydrogen flames is crucial for the development of hydrogen-capable gas turbines. Extending …
Thermodiffusively unstable laminar hydrogen flame in a sufficiently large 3D computational domain–Part I: Characteristic patterns
Thermodiffusive instabilities can have a leading order effect on flame propagation for lean
premixed hydrogen flames. Many simulation studies have been performed to study this …
premixed hydrogen flames. Many simulation studies have been performed to study this …
Effects of differential diffusion on hydrogen flame kernel development under engine conditions
The early flame kernel development in spark ignition engines is crucial for engine
performance. For non-unity-Lewis-number mixtures, it can be significantly influenced by …
performance. For non-unity-Lewis-number mixtures, it can be significantly influenced by …
Large eddy simulation of the dynamics of lean premixed flames using global reaction mechanisms calibrated for CH4–H2 fuel blends
AM Garcia, S Le Bras, J Prager, M Häringer… - Physics of …, 2022 - pubs.aip.org
The effects of hydrogen addition on the flame dynamics of a bluff-body stabilized methane–
hydrogen turbulent flame are studied with large eddy simulation (LES). The LES is carried …
hydrogen turbulent flame are studied with large eddy simulation (LES). The LES is carried …