Results 231 to 240 of about 28,542 (259)

Modal decomposition of hopping states in cellular flames

Chaos: An Interdisciplinary Journal of Nonlinear Science, 1999
We use Karhunen–Loeve (KL) decomposition of video images from an experiment to analyze a spatiotemporal dynamic state, unique to cellular flames, referred to as a “hopping state.” Ordered states of cellular flames on a circular burner consist of one or two concentric rings of luminous cells.
Palacios, Antonio, Gorman, Michael, Gunaratne, Gemunu H.   +2 more
openaire   +2 more sources

Extinction and cellular instability of premixed tubular flames

Proceedings of the Combustion Institute, 2008
Extinction and cellular instabilities are investigated in premixed tubular flames. A tubular burner has recently been designed and constructed to be capable of operating under a wide range of conditions that allow more accurate and detailed study of tubular premixed and non-premixed flames.
Yu Wang, Shengteng Hu, Robert Pitz
openaire   +1 more source

Numerical Simulation of Cellular Flame Propagation in Narrow Gaps

Mathematical Models and Computer Simulations, 2022
Summary: A computational model for combustion of premixed gases in narrow gaps between parallel plates is presented. The model is based on the numerical solution of conservation equations for multicomponent reacting gas flow in the small Mach number approximation. Detailed kinetic mechanism is used to describe combustion reactions.
Borisov, V. E., Yakush, S. E., Sysoeva, E. Ya.   +2 more
openaire   +2 more sources

The cellular flame instability of ammonia/propane laminar flames at elevated pressures

Fuel
William Roberts, Omar Arab
exaly   +2 more sources

Cellular flame structure and turbulent combustion

Combustion, Explosion and Shock Waves, 1982
Knowledge of flame interaction with perturbation of the surrounding medium is insufficient. This study investigates various parameters and methods for clarifying the combustion mechanism. The conditions for the appearance of a cellular structure were formed by analysis of diffusion phenomenon.
openaire   +1 more source

Diffusional-Thermal Theory of Cellular Flames

Combustion Science and Technology, 1977
abstract It is shown that the formation of cellular structure in a flame is conditioned by diffusion and heat conduction effects and is independent of the hydrodynamics of the perturbed flame. It is proved that cellular flames are formed only when a sufficiently light reactant of the combustible mixture is present in a low concentration. If there is an
openaire   +1 more source

Cellular flame structures and thermal characteristics of axi-symmetric ceiling fires: An experimental study and scaling analysis

Combustion and Flame, 2021
Longhua Hu, Kazunori Kuwana, Xiaolei Zhang   +2 more
exaly  

Ratcheting Motion of Concentric Rings in Cellular Flames

Physical Review Letters, 1996
, Gorman, , el-Hamdi, , Pearson, , Robbins   +3 more
openaire   +2 more sources

Nonlinear evolution of cellular flame instabilities

2022
A. Bayliss, B.J. Matkowsky
openaire   +1 more source

Onset of cellular flame instability in adiabatic CH4/O2/CO2 and CH4/air laminar premixed flames stabilized on a flat-flame burner

Combustion and Flame, 2013
Rixin Yu, X S Bai, A A Konnov
exaly