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 …

Influence of thermal expansion on fluid dynamics of turbulent premixed combustion and its modelling implications

N Chakraborty - Flow, Turbulence and Combustion, 2021 - Springer
The purpose of this paper is to demonstrate the effects of thermal expansion, as a result of
heat release arising from exothermic chemical reactions, on the underlying turbulent fluid …

A comparison between head-on quenching of stoichiometric methane-air and hydrogen-air premixed flames using Direct Numerical Simulations

J Lai, U Ahmed, M Klein, N Chakraborty - … Journal of Heat and Fluid Flow, 2022 - Elsevier
Head-on quenching of statistically planar stoichiometric methane-air and hydrogen-air
flames has been compared based on a Direct Numerical Simulation (DNS) database. Due …

Scalar gradient and strain rate statistics in oblique premixed flame–wall interaction within turbulent channel flows

U Ahmed, N Chakraborty, M Klein - Flow, Turbulence and Combustion, 2021 - Springer
Three-dimensional direct numerical simulations of V-flames interacting with chemically inert
walls in a fully developed turbulent channel flow have been performed under adiabatic and …

Analysis of the flame–wall interaction in premixed turbulent combustion

P Zhao, L Wang, N Chakraborty - Journal of Fluid Mechanics, 2018 - cambridge.org
The present work focuses on the flame–wall interaction (FWI) based on direct numerical
simulations (DNS) of a head-on premixed flame quenching configuration at the statistically …

Statistical behavior of turbulent kinetic energy transport in boundary layer flashback of hydrogen-rich premixed combustion

U Ahmed, AL Pillai, N Chakraborty, R Kurose - Physical Review Fluids, 2019 - APS
A direct numerical simulation (DNS) database for boundary layer flashback of a premixed
hydrogen-air flame with an equivalence ratio of 1.5 in a fully developed turbulent channel …

[HTML][HTML] Turbulent kinetic energy evolution in turbulent boundary layers during head-on interaction of premixed flames with inert walls for different thermal boundary …

SK Ghai, U Ahmed, M Klein, N Chakraborty - Proceedings of the …, 2023 - Elsevier
The statistical behaviour of turbulent kinetic energy, and its transport in turbulent boundary
layers during premixed flame-wall interaction for isothermal and adiabatic chemically inert …

Assessment of Bray Moss Libby formulation for premixed flame-wall interaction within turbulent boundary layers: Influence of flow configuration

U Ahmed, N Chakraborty, M Klein - Combustion and Flame, 2021 - Elsevier
Three-dimensional direct numerical simulations (DNS) of two different flow configurations
have been performed for premixed flames interacting with chemically inert isothermal walls …

Multiscale analysis of head-on quenching premixed turbulent flames

U Ahmed, NAK Doan, J Lai, M Klein, N Chakraborty… - Physics of …, 2018 - pubs.aip.org
Multiscale analysis of wall-bounded turbulent premixed flames is performed using three-
dimensional direct numerical simulation data of flame-wall interaction (FWI). The chosen …

Statistical behaviour and modelling of variances of reaction progress variable and temperature during flame-wall interaction of premixed flames within turbulent …

SK Ghai, U Ahmed, N Chakraborty - Flow, Turbulence and Combustion, 2024 - Springer
The statistical behaviour of the transport of reaction progress variable variance, c ″2~, and
non-dimensional temperature variance, T ″2~, have been analysed using three …