Results 221 to 230 of about 71,459 (273)

On the Physics of Jet Diffusion Flames

Combustion Science and Technology, 1992
Abstract A physical model for the laminar jet diffusion flame including chemical kinetics effects is provided. We produce the appropriate set of dimensionless groups needed to discuss the role of buoyancy and jet outlet velocity U o on such flames. We are particularly interested in flame lengths L\ the behaviour of the flame is shown to split in two ...
EMMANUEL VILLERMAUX, DANIEL DUROX
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Experiments on Impulsively Started Jet Diffusion Flames

AIAA Journal, 1996
The starting vortex of an impulsively generated jet diffusion flame was studied experimentally. Fuel jets were produced by the sudden discharge via a solenoid valve into still air. The fuel jet was ignited by a pilot flame. The length and lateral spread of the flame were determined by video imaging.
H. Johari, K. Desabrais, J. Hermanson
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Combustion of biomass in jet flames

Proceedings of the Combustion Institute, 2015
Abstract Flames of mixed wood, sawdust, fermentation-process residues and grain residues have been fired at 15 kW thermal input to determine flame ignition, temperature levels, NOx emissions, combustibles burnout as well as fly ash slagging propensity. South African Middleburg coal has been combusted under similar conditions.
Roman Weber, Yunus Poyraz, An Marcel Beckmann, Stefan Brinker   +3 more
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Sensitive Jets and Flames

Nature, 1925
MANY types of sensitive flame have been described from time to time, and measurements of the range of pitch and of the pressure at which they are sensitive have been made, but I have not seen any quantitative record of the variation of the length of such a flame or jet. In this connexion some experiments made recently by Mr. E.
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Flame stabilization by plasma jets

Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1971
Abstract The possibility of increasing flame reaction rates, stability and hence the throughput of chemical energy achievable by the addition of a small proportion of electrical power is stuided. The power is added to a subsidiary stream of different gases by a magnetically rotated plasma jet.
Anna J. Harrison, Felix Jiri Weinberg
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Blowout Limits of a Jet Diffusion Flame in the Presence of Small Surrounding Jet Pilot Flames

Journal of Energy Resources Technology, 1996
The blowout limit of a methane jet diffusion flame is examined in the presence of a number of much smaller pilot jet flames of different fuels arranged within an experimental burner assembly in a co-flowing stream of air. It is shown that the blowout limit of the central jet flame can be extended very appreciably by increasing the flow rate through the
M. G. Kibrya, G. A. Karim
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Pilot Flame Effects on Gas Jet Flames in Crossflow

Journal of Propulsion and Power, 2002
Flame structure, which includes the radiation power and temperature profiles, soot concentration profiles, and pollutants emissions (NO, NO x , CO, and CO 2 ) of propane and propylene gas diffusion flames with and without ahydrogen pilot flame in crossflow is presented.
Sien-Fong Goh, S. R. Gollahalli
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Interferometric visualization of jet flames

Journal of Visualization, 2000
This paper presents visualizations of reacting, round jets of the premixed and nonpremixed type realized by using interferometry and, complementarily, direct photography. The available interferometer, proposed by Carlomagno (1986), employs low-cost components and is flexible and robust to geometrical misalignments, allowing the drawbacks limiting the ...
A. Stella, G. Guj, A. Mataloni
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The Structure of Jet Diffusion Flames

1989
This paper presents the structural characteristics of free, round, jet diffusion flames as obtained using a new 2D laser sheet lighting visualization technique referred to as the RMS (Reactive Mie Scattering) method. The results of analyzing photographs and high speed movies of flames using the RMS method are discussed in terms of the visible flame ...
W. M. Roquemore, L.-D. Chen, L. P. Goss, W. F. Lynn   +3 more
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Flame Stabilization by a Transverse Jet

Combustion Science and Technology, 1991
Abstract The present paper reports the results of an experimental study of flame stabilization by a jet of air, normal to the flow of homogeneous propane-air mixture. The objective of the present work was to study in detail the mechanism of flame stabilization by a transverse jet.
JERZY GRZEGORZEWSKI, JÓZEF JAROSIŃSKI
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