diffusion flame


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diffusion flame

[də′fyü·zhən ‚flām]
(chemistry)
A long gas flame that radiates uniformly over its length and precipitates free carbon uniformly.
References in periodicals archive ?
1 are idealized chemical formula for the volatile thermal decomposition products that enter the diffusion flame, mix with oxygen, and react to form complete and incomplete combustion products and liberate heat.
Soot processes in a turbulent methane diffusion flame for which experimental data are available in the literature, are simulated numerically.
Flame inhibition measurements are less frequently made on diffusion flames, due to the difficulty in defining a fundamental flame strength parameter such as burning velocity and also the strong geometrical influences on diffusion flame propagation.
Fundamentals: Proton affinities and metal-ion affinities of important species are determined in a number of ways and in comparison with those obtained using molecular orbital calculations: small inorganic and organic molecules (Bohme and Hopkinson), oxides and hydroxides produced in a hydrogen diffusion flame (Goodings and Hopkinson), and amino acids and peptides (Fournier, Hopkinson and Siu).
Equilibrium studies, employing a 59 kW laboratory-scale combustor, examine the behavior (volatility, particle size, and speciation) of the metal vapors and particles produced by aqueous metal solutions sprayed through a swirling natural gas diffusion flame.
This means that the changeover from the diffusion flame to premix flame mode can be made before 85% base load is reached.
Combustion occurs in a boundary layer diffusion flame adjacent to the surface of the solid propellant.
This (Navy Technology Center for Safety and Survivability) report presents a study of the relative contributions of latent heat, heat capacity effects, and oxygen dilution, in the water mist suppression of a gaseous diffusion flame.
During the pilot mode of operation, fuel is directly injected into the combustor's liner where it is consumed in a diffusion flame reaction.
The work provides detailed technical information for fire engineers, engineering students, and fire response design professionals on a wide variety of topics including combustion and heat transfer, limits of flammability and premixed flames, diffusion flames and fire plumes, steady burning liquids and solids, ignition principles, flame spread, spontaneous ignition, pre and post-flashover combustion and smoke formation, composition, and movement.
The temperatures found in turbulent diffusion flames are characterized by their location within the fire plume.
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