Results 51 to 60 of about 119,191 (210)

Lean Limit Phenomena [PDF]

open access: yes, 1983
The influence of stretch and preferential diffusion on premixed flame extinction and stability was investigated via two model flame configurations, namely the stagnation flame and the bunsen flame.
Law, C. K.
core   +2 more sources

A simultaneous non-invasive diagnosis method for flame temperature and velocity fields based on radiation self-calibration and optical flow

open access: yesCase Studies in Thermal Engineering
The measurement of flame temperature and velocity is crucial to combustion research, hence it is of great significance to develop a non-invasive diagnosis technology for the measurement of flame temperature and velocity.
Yue Chen   +5 more
doaj   +1 more source

Scaling, Propagation, and Kinetic Roughening of Flame Fronts in Random Media [PDF]

open access: yes, 1995
We introduce a model of two coupled reaction-diffusion equations to describe the dynamics and propagation of flame fronts in random media. The model incorporates heat diffusion, its dissipation, and its production through coupling to the background ...
A. K. Kapila   +27 more
core   +2 more sources

DNS Study of Freely Propagating Turbulent Lean-Premixed Flames with Low-Temperature Chemistry in the Broken Reaction Zone Regime

open access: yesEnergies
The novel engines nowadays with high efficiency are operated under the superpressure, supercritical, and supersonic extreme conditions that are situated in the broken reaction zone regime.
Yi Zhang   +4 more
doaj   +1 more source

Effect of heat release on the spatial stability of a supersonic reacting mixing layer [PDF]

open access: yes
A numerical study of the stability of compressible mixing layers in which a diffusion flame is embedded is described. The mean velocity profile has been approximated by a hyperbolic tangent profile and the limit of infinite activation energy taken, which
Grosch, C. E., Jackson, T. L.
core   +1 more source

Theoretical Analysis of Nitric Oxide Production in a Methane/Air Turbulent Diffusion Flame [PDF]

open access: yes, 1980
The coherent flame model is applied to the methane-air turbulent diffusion flame with the objective of describing the production of nitric oxide. The example of a circular jet of methane discharging into a stationary air atmosphere is used to illustrate ...
Marble, Frank E.
core  

Model constant C of turbulent NO reaction time model

open access: yesCase Studies in Thermal Engineering, 2017
The NO concentration of turbulent jet flames with different fuel, jet velocity, and jet diameter are simulated with the turbulent NO reaction time model. The predicted NO profile has very good agreement with the experimental data.
Qiong Li, Yuexinzhu Lan, Peiyong Wang
doaj   +1 more source

Theory of laminar flames in stagnation flows [PDF]

open access: yes
Laminar flame propagation equations in stagnation flow using flat flame diffusion ...
Kushida, R.
core   +1 more source

Instabilities and soot formation in high-pressure, rich, iso-octane-air explosion flames - 1. Dynamical structure [PDF]

open access: yes, 2007
Simultaneous OH planar laser-induced fluorescence (PLIF) and Rayleigh scattering measurements have been performed on 2-bar rich iso-octane–air explosion flames obtained in the optically accessible Leeds combustion bomb.
Lockett, R. D., Woolley, R.
core   +1 more source

Influence of Annular Flow Area and a 30-Degree Impingement Angle on Methane/Oxygen Diffusion Flame Stability

open access: yesMethane
This work examined the effects of secondary annular flow area on flame stability in an experimental diffusion flame burner. The burner was composed of a horizontally mounted, rectangular chamber that utilized a retractable spark plug for ignition and an ...
Joshua M. Hollingshead   +4 more
doaj   +1 more source

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