[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 …
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 …
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 …
[HTML][HTML] The transition to sustainable combustion: Hydrogen-and carbon-based future fuels and methods for dealing with their challenges
H Pitsch - Proceedings of the Combustion Institute, 2024 - Elsevier
While the world is already facing substantial impacts of global warming, the transition
towards a sustainable-energy future is slow because of the sheer scale of global energy …
towards a sustainable-energy future is slow because of the sheer scale of global energy …
Heat release characteristics of ammonia flames in MILD conditions
Ammonia (NH 3) combustion is an attractive energy source with zero carbon dioxide (CO 2)
emissions and a potential hydrogen-combustion enabler. In addition, the availability of …
emissions and a potential hydrogen-combustion enabler. In addition, the availability of …
Isolating effects of large and small scale turbulence on thermodiffusively unstable premixed hydrogen flames
MX Yao, G Blanquart - Combustion and Flame, 2024 - Elsevier
Lean turbulent premixed hydrogen/air flames have substantially increased flame speeds,
commonly attributed to differential diffusion effects. In this work, the effect of turbulence on …
commonly attributed to differential diffusion effects. In this work, the effect of turbulence on …
Structure and propagation characteristics of turbulent premixed ammonia-air flames
To obtain fundamental insights into the propagating behaviour of turbulent ammonia-air
premixed flames, direct numerical simulations are carried out with complex chemistry for the …
premixed flames, direct numerical simulations are carried out with complex chemistry for the …
A numerical investigation on effects of hydrogen enrichment and turbulence on NO formation pathways in premixed ammonia/air flames
ABSTRACT NO x emission reduction is one of the major challenges when using
ammonia/hydrogen blends as an alternative fuel for carbon-free combustion. In this study …
ammonia/hydrogen blends as an alternative fuel for carbon-free combustion. In this study …
DNS of Turbulent Premixed Ammonia/Hydrogen Flames: The Impact of Thermo-Diffusive Effects
Abstract Direct Numerical Simulations (DNS) of three-dimensional premixed turbulent
hydrogen-air flames enriched with 19%, 36%, 44% and 57% of NH 3 (in volume) are …
hydrogen-air flames enriched with 19%, 36%, 44% and 57% of NH 3 (in volume) are …
Large eddy simulation of bluff-body turbulent hydrogen/nitrogen flames using principal component transport models with differential diffusion effects
This study investigates the combustion characteristics of nonpremixed bluff-body stabilized
H 2/N 2-air flames, with a specific focus on a fully cracked ammonia case. The motivation …
H 2/N 2-air flames, with a specific focus on a fully cracked ammonia case. The motivation …