Results 211 to 220 of about 18,204 (247)

NEAR-LIMIT SPHERICAL DIFFUSION FLAMES AND COOL DIFFUSION FLAMES

2023
To combat the rising threats of climate change, current combustion technologies must evolve to become cleaner and more efficient. This requires a better understanding of the fundamental properties of combustion. One way to gain this is through microgravity experiments, where the lack of buoyancy reduces flames to their most basic components ...
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Non-premixed Flames (Diffusion Flames)

2011
In many combustion processes, the fuel and oxidizer are separated before entering the reaction zone where they mix and burn. The combustion reactions in such cases are called “non-premixed flames,” or traditionally, “diffusion flames” because the transport of fuel and oxidizer into the reaction zone occurs primarily by diffusion.
Sara McAllister, Jyh-Yuan Chen, A. Carlos Fernandez-Pello   +2 more
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Turbulent diffusion flames

Symposium (International) on Combustion, 1973
Experimental results are presented for turbulent diffusion flames of a round jet of hydrogen in a co-flowing stream of air. The aim of the work is to provide comprehensive data which will assist in refining the newer and more-powerful theories coming into use.
J.H. Kent, R.W. Bilger
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Diffusion Flames

1993
Abstract Unlike premixed flames, diffusion flames do not have a burning velocity. Interest therefore lies in their internal structure, in their rates of energy release, in rates of transport of fuel and oxidizer into the flame (burning rates), and in necessary conditions for their existence and extinction.
Amable Linan, Forman A Williams
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TURBULENT JET DIFFUSION FLAMES

Progress in Energy and Combustion Science, 1976
Publisher Summary This chapter discusses the turbulent jet diffusion flames of gaseous fuels. This system is simple compared to that in a diesel or gas turbine engine but nevertheless can throw much light on the mechanisms that are involved in the submodels used in describing the more complex systems.
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Buoyant diffusion flames

Symposium (International) on Combustion, 1989
Planar visualization was employed to study flame structure and low frequency flame oscillation. Two distinct vortices were visualized in the flames studies: large toroidal vortices outside the luminous flame and small roll-up vortices inside the luminous flame.
L.-D. Chen, J.P. Seaba, W.M. Roquemore, L.P. Goss   +3 more
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Polyhedral Diffusion Flames

Nature, 1951
BURNER flames of unusual structure may be obtained when certain hydrocarbon gases and vapours are burnt in admixture with air or oxygen. Thus, as first noted by Smithells and Ingle1, and later by Smith and Pickering2, the inner cones of the flames may assume the form of a polyhedron, the number of sides of which is dependent upon prevailing conditions,
J. E. GARSIDE, B. JACKSON
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Diffusion flame-holes

Combustion Theory and Modelling, 1999
Recent models of straight diffusion flame edges are extended to consider the effect of a curved edge forming the perimeter of an axisymmetric ‘hole’, where a burning flame surrounds a quenched inner region. For ‘free’ flame-holes (without a heat sink near the axis), at small Damkohler number (Da), the holes grow if the initial radius is large but ...
Vedha Nayagam, R Balasubramaniam, Paul D Ronney   +2 more
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Diffusion Flame Stability

Combustion Science and Technology, 1973
(1973). Diffusion Flame Stability. Combustion Science and Technology: Vol. 7, No. 6, pp. 241-243.
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Counterflow diffusion flames

Progress in Energy and Combustion Science, 1982
Abstract Laminar counterflow diffusion flames are generally referred to as the pure diffusion flame. This paper reviews experimental studies of these counterflow diffusion flames and presents a detailed summary of our present understanding of them.
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