A vortex-dynamical scaling theory for flickering buoyant diffusion flames

X Xia, P Zhang - Journal of Fluid Mechanics, 2018 - cambridge.org
The flickering of buoyant diffusion flames is associated with the periodic shedding of toroidal
vortices that are formed under gravity-induced shearing at the flame surface. Numerous …

Frequency jump of a flickering buoyant jet diffusion flame influenced by ambient coflow

H Zhang, Y Yang, L Li, Y Peng, X Xia, F Qi - Proceedings of the …, 2024 - Elsevier
Flickering of laminar diffusion flames is known to be caused by the buoyancy-induced
toroidal vortices attached to the outer flame surface, making a classical model for …

Experimental study of buoyancy-induced instability in the DME and LPG jet diffusion flame

GM Nayak, P Kolhe, S Balusamy - Fuel, 2021 - Elsevier
An experimental study is conducted on the buoyant jet diffusion flames to explore the
interaction between the fuel jet and the outer vortex and their impact on the flame structure …

Influence of co-flow on flickering diffusion flame

N Fujisawa, Y Matsumoto, T Yamagata - Flow, Turbulence and …, 2016 - Springer
The influence of air co-flow on flickering methane diffusion flame was studied experimentally
using the image processing technique and the proper orthogonal decomposition (POD) …

Analysis of global and local hydrodynamic instabilities on a high-speed jet diffusion flame via time-resolved 3D measurements

R Dong, Q Lei, Y Chi, E Song, W Fan - Flow, Turbulence and Combustion, 2021 - Springer
Measurements of 3D flame edge dynamics were made on a high-speed jet diffusion flame to
assess the global/local hydrodynamic instability. The flame was generated by issuing high …

Observation of large-scale structure in flickering diffusion flame by time-resolved particle image velocimetry and shadowgraph imaging

N Fujisawa, K Sakai, T Yamagata - Experimental Thermal and Fluid …, 2018 - Elsevier
In order to understand the flow structure of a flickering flame, time-resolved observations are
carried out of the velocity and density fields in a diffusion flame in co-flow using particle …

Experimental study on the flickering and pinch-off of jet diffusion flames

H Zhang, Y Yang, L Li, Y Lin, F Qi, X Xia - Physical Review Fluids, 2024 - APS
The classical flame instability problem of a flickering diffusion flame is investigated
experimentally, with an emphasis on the underlying vortex dynamics and flame pinch-off …

Experimental Observation of the Turbulent Jet Ignition for Extending the Lean Combustion Tolerance with Carbon Dioxide Diluted Mixture

K Xie, L Zhong, P Liu, H Wei, L Zhou - Combustion Science and …, 2024 - Taylor & Francis
ABSTRACT Exhaust Gas Recirculation (EGR) technology is widely employed to reduce NOx
emissions from engine combustion, and a major challenge of this technology is to achieve …

Effects of co-flow and equivalence ratio on flickering in partially premixed flame

N Fujisawa, T Okuda - International Journal of Heat and Mass Transfer, 2018 - Elsevier
The effects of air co-flow and equivalence ratio on flickering of a partially premixed flame of
methane/air were experimentally studied for various combinations of burner diameters …

Regimes of Unstable Expansion and Diffusion Combustion of a Hydrocarbon Fuel Jet

VV Lemanov, VV Lukashov, RK Abdrakhmanov… - … , Explosion, and Shock …, 2018 - Springer
Results of an experimental study of hydrodynamics and diffusion combustion of hydrocarbon
jets are presented. Various regimes of instability development both in the jet flame proper …