Critical conditions for non-symmetric flame propagation in narrow channels: Influence of the flow rate, the thermal expansion, the Lewis number and heat-losses

A Dejoan, C Jiménez, VN Kurdyumov - Combustion and Flame, 2019 - Elsevier
This paper presents a numerical study of the propagation of isobaric premixed flames in
narrow channels, focusing primarily on the symmetry of solutions. Because of the complexity …

A numerical investigation on the thermo-chemical structures of methane-oxygen diffusion flame-streets in a microchannel

X Kang, B Sun, J Wang, Y Wang - Combustion and Flame, 2019 - Elsevier
Abstract “Flame-street” refers to the interesting combustion phenomenon that a diffusion
flame in a narrow channel is separated into a discrete series of flame segments. Although …

Dynamics of a holder-stabilized laminar methane-air premixed flame in a preheated mesoscale combustor at ultra-lean condition

J Wan, H Zhao - Fuel, 2020 - Elsevier
The flame dynamics at ultra-lean condition under the synergistic effect of heat recirculation
and flow recirculation is experimentally studied in this work. The previously reported …

Experimental and numerical studies of the diluent influence (N2, Ar, He, Xe) on stable premixed methane flames in micro-combustion

H Chouraqui, G Dayma, G Ribert, F Halter… - Proceedings of the …, 2021 - Elsevier
This work focuses on the diluent influence on stable methane flames in a fused silica micro
flow reactor (MFR). Experimental and numerical investigations are performed. The first part …

Flame propagation in narrow horizontal channels: Impact of the gravity field on the flame shape

A Dejoan, C Jiménez, D Martínez-Ruiz… - Proceedings of the …, 2023 - Elsevier
In this paper, we study the effect of gravity, or buoyancy forces, on the structure of flames
propagating in horizontal channels. It is shown that there are two mechanisms for the …

Ultra-lean blow-off dynamics of a holder-stabilized premixed flame in a preheated mesoscale combustor near laminar critical condition

J Wan, H Zhao - Energy, 2021 - Elsevier
The present work experimentally illustrates and analyzes the ultra-lean flame blow-off
dynamics near laminar critical condition under the synergistic effect of heat and flow …

Numerical simulation of laminar premixed hydrogen-air flame/shock interaction in semi-closed channel

E Yhuel, G Ribert, P Domingo - Proceedings of the Combustion Institute, 2023 - Elsevier
Highly refined simulations of flame/shock interactions (FSI) are performed and analyzed in
the context of hydrogen/air combustion in a two-dimensional shock-tube configuration …

Parametric instability in propagating flames and the impact of hydrogen enrichment on the onset of secondary instability

D Jun, BJ Lee - Physics of Fluids, 2023 - pubs.aip.org
A self-excited acoustic instability of laminar premixed flames propagating in an open-ended
tube with a length of 700 mm and a radius of 10 mm was simulated by solving the reacting …

[HTML][HTML] Flame-acoustics interaction for flames propagating from the open to the closed end of a channel: effects of heat losses and the Lewis number

C Jiménez, VN Kurdyumov - Combustion and Flame, 2022 - Elsevier
In this paper we present a numerical study of the impact of heat losses and the differential
diffusion effect on the flame-acoustics interaction, for flames propagating from the open to …

[HTML][HTML] Anchoring of turbulent premixed hydrogen/air flames at externally heated walls

S Klukas, M Giglmaier, NA Adams, M Sieber… - international journal of …, 2020 - Elsevier
A joint experimental and numerical investigation of turbulent flame anchoring at externally
heated walls is presented. The phenomenon has primarily been studied for laminar flames …