Combustion machine learning: Principles, progress and prospects

M Ihme, WT Chung, AA Mishra - Progress in Energy and Combustion …, 2022 - Elsevier
Progress in combustion science and engineering has led to the generation of large amounts
of data from large-scale simulations, high-resolution experiments, and sensors. This corpus …

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 …

Detonation initiation by compressible turbulence thermodynamic fluctuations

CAZ Towery, AY Poludnenko, PE Hamlington - Combustion and Flame, 2020 - Elsevier
Abstract Theory and computations have established that thermodynamic gradients created
by hot spots in reactive gas mixtures can lead to spontaneous detonation initiation …

Thin reaction zones in constant-density turbulent flows at low Damköhler numbers: Theory and simulations

VA Sabelnikov, R Yu, AN Lipatnikov - Physics of Fluids, 2019 - pubs.aip.org
Propagation of a single-reaction wave in a constant-density turbulent flow is studied by
considering reaction rates that depend on the reaction progress variable c in a highly …

[HTML][HTML] Lagrangian analysis of enstrophy dynamics in a highly turbulent premixed flame

R Darragh, CAZ Towery, MA Meehan… - Physics of …, 2021 - pubs.aip.org
A Lagrangian analysis approach is used to examine the effects of heat release on the
dynamics of the enstrophy during highly turbulent premixed combustion. The analysis is …

A direct numerical simulation study of the influence of flame-generated vorticity on reaction-zone-surface area in weakly turbulent premixed combustion

AN Lipatnikov, VA Sabelnikov, S Nishiki… - Physics of …, 2019 - pubs.aip.org
Direct numerical simulation data obtained from two statistically stationary, one-dimensional,
planar, weakly turbulent, premixed flames are analyzed in order to examine the influence of …

Physical space analysis of cross-scale turbulent kinetic energy transfer in premixed swirl flames

A Kazbekov, AM Steinberg - Combustion and Flame, 2021 - Elsevier
Understanding the cross-scale kinetic energy transport in turbulent flames is critical for
physically-accurate modeling. This paper presents an experimental analysis of cross-scale …

Statistical behaviors of conditioned two-point second-order structure functions in turbulent premixed flames in different combustion regimes

P Brearley, U Ahmed, N Chakraborty, A Lipatnikov - Physics of Fluids, 2019 - pubs.aip.org
The second-order structure functions and their components conditioned upon various events
have been analyzed for unweighted and density-weighted velocities using a Direct …

Investigation of the influence of combustion-induced thermal expansion on two-point turbulence statistics using conditioned structure functions

VA Sabelnikov, AN Lipatnikov, S Nishiki… - Journal of Fluid …, 2019 - cambridge.org
The second-order structure functions (SFs) of the velocity field, which characterize the
velocity difference at two points, are widely used in research into non-reacting turbulent …

Effects of thermal expansion on moderately intense turbulence in premixed flames

VA Sabelnikov, AN Lipatnikov, NV Nikitin… - Physics of …, 2022 - pubs.aip.org
This study aims at analytically and numerically exploring the influence of combustion-
induced thermal expansion on turbulence in premixed flames. In the theoretical part …