Structure and dynamics of highly turbulent premixed combustion

AM Steinberg, PE Hamlington, X Zhao - Progress in Energy and …, 2021 - Elsevier
Turbulent premixed combustion involves simultaneous and mutually interacting fluid,
chemical, and transport phenomena spanning a wide range of spatial and temporal scales …

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 …

Challenges for turbulent combustion

AR Masri - Proceedings of the Combustion Institute, 2021 - Elsevier
Turbulent combustion will remain central to the next generation of combustion devices that
are likely to employ blends of renewable and fossil fuels, transitioning eventually to …

Effect of differential diffusion on turbulent lean premixed hydrogen enriched flames through structure analysis

W Zhang, J Wang, W Lin, R Mao, H Xia… - International Journal of …, 2020 - Elsevier
This study presents the flame structure influenced by the differential diffusion effects and
evaluates the structural modifications induced by the turbulence, thus to understand the …

Turbulent flame speed and reaction layer thickening in premixed jet flames at constant Karlovitz and increasing Reynolds numbers

A Attili, S Luca, D Denker, F Bisetti, H Pitsch - Proceedings of the …, 2021 - Elsevier
A series of Direct Numerical Simulations (DNS) of lean methane/air flames was conducted to
investigate the enhancement of the turbulent flame speed and modifications to the reaction …

Premixed flames subjected to extreme levels of turbulence part II: Surface characteristics and scalar dissipation rates

AW Skiba, CD Carter, SD Hammack, JF Driscoll - Combustion and Flame, 2022 - Elsevier
The current work assesses the impact of turbulence on flame surface characteristics and
scalar dissipation rates (χ C) of piloted premixed methane-air flames. This assessment is …

[HTML][HTML] Internal flame structures of thermo-diffusive lean premixed H2/air flames with increasing turbulence

S Shi, R Schultheis, RS Barlow, D Geyer… - Proceedings of the …, 2024 - Elsevier
Turbulent flow fields, instantaneous flame structures, and internal thermo-chemical states of
lean premixed hydrogen/air jet flames at an initial equivalence ratio of 0.4 are …

[HTML][HTML] Assessing turbulence–flame interaction of thermo-diffusive lean premixed H2/air flames towards distributed burning regime

S Shi, R Schultheis, RS Barlow, D Geyer… - Combustion and …, 2024 - Elsevier
Simultaneous laser-induced fluorescence of OH radicals and particle image velocimetry,
and quasi-simultaneous 1D Raman/Rayleigh and 2D Rayleigh scattering measurements …

High-fidelity flame-front wrinkling measurements derived from fractal analysis of turbulent premixed flames with large Reynolds numbers

AW Skiba, CD Carter, SD Hammack… - Proceedings of the …, 2021 - Elsevier
This work assesses the level of wrinkling that premixed flames exhibit when subjected to
turbulence levels in excess of ten times that of previous experimental studies of this nature …

On local displacement speeds, their correlations with flame-front quantities, and their temporal evolution measured in turbulent premixed flames

AW Skiba, CD Carter, SD Hammack… - Proceedings of the …, 2024 - Elsevier
This study reports measurements of two-dimensional (2D) local displacement speeds (),
curvature (), and tangential strain rate () extracted from premixed flames subjected to …