Recent developments in DNS of turbulent combustion
P Domingo, L Vervisch - Proceedings of the Combustion Institute, 2023 - Elsevier
The simulation of turbulent flames fully resolving the smallest flow scales and the thinnest
reaction zones goes along with specific requirements, which are discussed from …
reaction zones goes along with specific requirements, which are discussed from …
[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 …
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 …
Influence of molecular transport on burning rate and conditioned species concentrations in highly turbulent premixed flames
Apparent inconsistency between (i) experimental and direct numerical simulation (DNS)
data that show the significant influence of differential diffusion on the turbulent burning rate …
data that show the significant influence of differential diffusion on the turbulent burning rate …
Lewis number and preferential diffusion effects in lean hydrogen–air highly turbulent flames
Unsteady three-dimensional direct numerical simulations of highly turbulent, complex-
chemistry, lean hydrogen-air flames were performed by changing the equivalence ratio ϕ …
chemistry, lean hydrogen-air flames were performed by changing the equivalence ratio ϕ …
[HTML][HTML] How fast can we burn, 2.0
S Hochgreb - Proceedings of the Combustion Institute, 2023 - Elsevier
We review the state of the art in measurements and simulations of the behavior of premixed
laminar and turbulent flames, subject to differential diffusion, stretch and curvature. The first …
laminar and turbulent flames, subject to differential diffusion, stretch and curvature. The first …
A DNS study of extreme and leading points in lean hydrogen-air turbulent flames-part II: Local velocity field and flame topology
Data obtained in recent direct numerical simulations (Lee et al.) of statistically one-
dimensional and planar, lean complex-chemistry hydrogen-air flames characterized by three …
dimensional and planar, lean complex-chemistry hydrogen-air flames characterized by three …
[HTML][HTML] Comparative effects of plasma and preheating in assisting premixed ammonia/air flames: A DNS study
Abstract In this study, Direct Numerical Simulations are utilized to investigate turbulent
premixed NH 3/air flames assisted by two distinct methods: non-equilibrium nanosecond …
premixed NH 3/air flames assisted by two distinct methods: non-equilibrium nanosecond …
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 …
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 …