Modeling thermal diffusion flames with fractal dimensions

RA El-Nabulsi, W Anukool - Thermal Science and Engineering Progress, 2023 - Elsevier
In this study, we have discussed the implications of fractal dimensions in flame diffusion
theory based on the notion of non-integer dimensional space for complex fractal media. We …

Analysis of premixed flame propagation between two closely-spaced parallel plates

D Fernández-Galisteo, VN Kurdyumov… - Combustion and …, 2018 - Elsevier
Motivated by experimental observations on premixed-gas flame propagation in Hele-Shaw
cells, this work analyzes quasi-isobaric flame propagation between two adiabatic parallel …

[HTML][HTML] Stability of diffusion flames under shear flow: Taylor dispersion and the formation of flame streets

P Rajamanickam, A Kelly, J Daou - Combustion and Flame, 2023 - Elsevier
Diffusion flame streets, observed in non-premixed micro-combustion devices, align parallel
to a shear flow. They are observed to occur in mixtures with high Lewis number (Le) fuels …

[HTML][HTML] Flame stability under flow-induced anisotropic diffusion and heat loss

J Daou, A Kelly, J Landel - Combustion and Flame, 2023 - Elsevier
A two-dimensional model for premixed flames accounting for flow-enhanced diffusion or
Taylor dispersion and heat loss is investigated. This is the first analytical study addressing …

A thick reaction zone model for premixed flames in two-dimensional channels

P Rajamanickam, J Daou - Combustion Theory and Modelling, 2023 - Taylor & Francis
Direct interactions between the flow field and the chemical reaction in premixed flames
occur when the reaction zone thickness is comparable to, or greater than flow length scales …

Diffusive-thermal instabilities of a planar premixed flame aligned with a shear flow

J Daou, P Rajamanickam - Combustion Theory and Modelling, 2024 - Taylor & Francis
The stability of a thick planar premixed flame, propagating steadily in a direction transverse
to that of unidirectional shear flow, is studied. A linear stability analysis is carried out in the …

An upscaling model for simulation of geothermal processes in stratified formations

J Tang, Y Wang, WR Rossen - Geothermics, 2024 - Elsevier
In stratified porous media, non-uniform velocity between layers combined with thermal
conduction across layers causes spreading of the thermal front: thermal Taylor dispersion …

[HTML][HTML] Effective Lewis number and burning speed for flames propagating in small-scale spatio-temporal periodic flows

P Rajamanickam, J Daou - Combustion and Flame, 2023 - Elsevier
Propagation of premixed flames having thick reaction zones in rapidly-varying, small-scale,
zero-mean, spatio-temporal periodic flows is considered. Techniques of large activation …

Effects of thermal expansion on Taylor dispersion-controlled diffusion flames

P Rajamanickam, AD Weiss - Combustion Theory and Modelling, 2022 - Taylor & Francis
A theoretical analysis is developed to investigate the effects of gas expansion due to heat
release on unsteady diffusion flames evolving in a pipe flow in which the mixing of reactants …

Three-dimensional diffusive-thermal instability of flames propagating in a plane Poiseuille flow

A Kelly, P Rajamanickam, J Daou, JR Landel - Proceedings of the …, 2024 - Elsevier
The three-dimensional diffusive-thermal stability of a two-dimensional flame propagating in
a Poiseuille flow is examined. The study explores the effect of three non-dimensional …