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 …

On the validity of Damköhler's first hypothesis in turbulent Bunsen burner flames: A computational analysis

N Chakraborty, D Alwazzan, M Klein… - Proceedings of the …, 2019 - Elsevier
The validity of Damköhler's first hypothesis, which relates the turbulent flame speed to
turbulent flame surface area under the condition where the integral length scale of …

[HTML][HTML] Application of a two-progress variable model for carbon monoxide emissions from turbulent premixed and partially premixed enclosed flames

JC Massey, Y Tanaka, N Swaminathan - Combustion and Flame, 2023 - Elsevier
A large eddy simulation study is undertaken with the objective of improving carbon
monoxide (CO) estimations compared to measurements of enclosed turbulent flames in …

Scalar gradient and flame propagation statistics of a flame-resolved laboratory-scale turbulent stratified burner simulation

E Inanc, AM Kempf, N Chakraborty - Combustion and Flame, 2022 - Elsevier
A bluff-body stabilised turbulent jet flame burning in a stratified mode of combustion for fuel-
lean methane/air mixtures is investigated by a flame-resolved simulation. A tabulated …

Effects of Lewis number on head on quenching of turbulent premixed flames: a direct numerical simulation analysis

J Lai, N Chakraborty - Flow, Turbulence and Combustion, 2016 - Springer
The head on quenching of statistically planar turbulent premixed flames by an isothermal
inert wall has been analysed using three-dimensional Direct Numerical Simulation (DNS) …

[HTML][HTML] Modeling subgrid-scale scalar dissipation rate in turbulent premixed flames using gene expression programming and deep artificial neural networks

C Kasten, J Shin, R Sandberg, M Pfitzner… - Physics of …, 2022 - pubs.aip.org
In this present study, gene expression programing (GEP) has been used for training a model
for the subgrid scale (SGS) scalar dissipation rate (SDR) for a large range of filter widths …

Algebraic closure of scalar dissipation rate for large eddy simulations of turbulent premixed combustion

Y Gao, N Chakraborty… - Combustion Science and …, 2014 - Taylor & Francis
An a-priori analysis of the filtered reaction rate closure based on Favre-filtered scalar
dissipation rate (SDR) for large eddy simulations (LES) of turbulent premixed combustion …

A presumed joint pdf model for turbulent combustion with varying equivalence ratio

OR Darbyshire, N Swaminathan - Combustion science and …, 2012 - Taylor & Francis
Modeling of the joint probability density function of the mixture fraction and progress variable
with a given covariance value is studied. This modeling is validated using experimental and …

Evolution of scalar and velocity dynamics in planar shock-turbulence interaction

R Boukharfane, Z Bouali, A Mura - Shock Waves, 2018 - Springer
Due to the short residence time of air in supersonic combustors, achieving efficient mixing in
compressible turbulent reactive flows is crucial for the design of supersonic ramjet …

Analysis of the Evolution of the Surface Density Function During Premixed V-Shaped Flame–Wall Interaction in a Turbulent Channel Flow at Reτ = 395

R Kai, AL Pillai, U Ahmed, N Chakraborty… - Combustion Science …, 2025 - Taylor & Francis
The flame–turbulence interaction and statistical behavior of the surface density function
(SDF; ie magnitude of the reaction progress variable gradient) in the vicinity of the wall for a …