Results 251 to 260 of about 269,073 (304)

Structure and Flame Length of Fully-Modulated, Turbulent Diffusion Flames

Combustion Science and Technology, 2000
The turbulent flame structure and flame length of fully-modulated diffusion flames was examined over a range of pulsing frequencies, injection flow rates, and duty-cycles. An injection system employing an electronically-controlled solenoid value was used to discharge puffs of unhealed natural gas and ethylene fuel into still air at one atmosphere ...
J.C. HERMANSON, R. DUGNANI, H. JOHARI
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Flame lengths under ceilings

Fire and Materials, 1980
AbstractThe evaluation of hazards from developing room fires often requires a knowledge of flame lengths developed by burning objects. Procedures for estimating flame lengths have been available only for vertical plume fires, where there is no flame impingement on the room ceiling.
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Radiative Fraction and Flame Length of Propane Jet Diffusion Flames in a Crossflow

Физика горения и взрыва, 2020
Many industrial combustion devices rely on jet flame combustion in the crossflow to achieve mixing and reaction. Previous research offers a limited predictive capability regarding the coupling effects of the crossflow and jet flow on the flame radiative fraction.
J.-W. Wang, J. Fang, J.-F. Guan, L.-Y. Zhao, S.-B. Lin, H. R. Shah, Y.-M. Zhang, J.-H. Sun   +7 more
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An examination of flame length data from vertical turbulent diffusion flames

Combustion and Flame, 1993
Abstract Literature data on the length of turbulent diffusion flames is examined for the buoyancy through momentum dominated regimes. This data is interpreted through an ad hoc dimensional analysis where the length scale is the Thring-Newby theoretical lateral flame dimension.
T.R. Blake, M. McDonald
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Markstein lengths of CO/H2/air flames, using expanding spherical flames

Symposium (International) on Combustion, 1996
Markstein lengths (defined as the reduction in burning velocity per unit stretch) have been measured for a series of CO/H2/air flames at atmospheric pressure. Values as a function of stoichiometry are reported for three fuels (95%/5% CO/H2, 50%/50% CO/H2, and 100% H2).
Martin J. Brown, Ian C. McLean, David B. Smith, Simon C. Taylor   +3 more
openaire   +1 more source

Measured lengths of supersonic hydrogen-air jet flames—Compared to subsonic flame lengths—and analysis

Combustion and Flame, 1996
Abstract Measurements of flame length are reported that help to quantify the overall fuel-air mixing process that occurs within a jet-like flame in the supersonic regime. A nonpremixed, turbulent, hydrogen-air jet flame is stabilized along the axis of a Mach 2.2 coflowing air stream.
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Turbulent length scales in a swirling flame

Symposium (International) on Combustion, 1996
LDV measurements of spatial velocity correlations and integral length scales in a swirling jet and a swirling diluted hydrogen flame are described. The experimental setup consists of two conventional laser Doppler anemometers working in forward scattering mode, one fixed and the other moved by a special traversing system.
G. Früchtel, E.P. Hassel, J. Janicka
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Measurement of flame lengths under ceilings

Fire Safety Journal, 1989
Abstract Measurements of luminous flame extensions beneath ceilings under steady burning conditions are presented. Tests were conducted using both axisymmetric and corner-wall-ceiling configurations for a range of energy supply rates up to 400 kW and burner-to-ceiling heights up to 2·3 m.
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Flame Length Measurements of Burning Fuel Puffs

Combustion Science and Technology, 1993
Abstract An experimental study of burning of natural gas puffs generated by a fully modulated jet, has been conducted. The present study concentrated on the effects of duty-cycle and puff volume, or equivalently the injection time, on the flame length. It is observed that when individual puffs are well-separated, considerably shorter flame lengths, by ...
HAMID JOHARI, VAHID MOTEVALLI
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Studies on Combustion Characteristics and Flame Length of Turbulent Oxy−Fuel Flames

Energy & Fuels, 2007
Combustion characteristics, flame structure, and length in an oxy-fuel combustor have been experimentally investigated for a wide range of fuel nozzle diameters and fuel and oxidizer velocities. Measurements are made for the model combustor (Combustor I) as well as for the actual oxy-fuel combustor (Combustor II). The experimental results for Combustor
Ho Keun Kim, Yongmo Kim, Sang Min Lee, Kook Young Ahn   +3 more
openaire   +1 more source