The structure of a swirl-stabilized kerosene spray flame

Conference · Mon Dec 31 04:00:00 EST 1990

OSTI ID:10153200

Presser, C; Semerjian, H G ^[1]; Gupta, A K ^[2]

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1. National Inst. of Standards and Technology, Gaithersburg, MD (United States). Center for Chemical Technology
2. Maryland Univ., College Park, MD (United States). Dept. of Mechanical Engineering

The interaction of the fuel spray with the surrounding combustion air, in particular near the spray boundary, affects its combustion and emission characteristics. Near the spray boundary, droplets of many different sizes, traveling at different velocities, are expected to be found. In addition, combustion air swirl affects fuel/air mixing and modifies the entire spray pattern. Therefore spatially and temporally resolved information about the effect of swirl on droplet properties, especially near the spray boundary, is important for understanding the structure of sprays and spray flames. Experiments were carried out in a spray combustion facility includes a movable vane swirl burner. Droplet velocity distributions were obtained using a single-channel, dual-beam laser velocimeter (LV). The measurements were carried out using off-axis light collection optics, positioned at a scattering angle of 30{degrees}, which provided a measurement volume of about 1 mm{sup 3}. The measured distributions were used to obtain statistical data on mean and rms velocity, turbulence intensity, skewness and flatness factors. Time resolved data were also recorded to provide information on droplet intermittency at selected positions in the spray flame.

• Research Organization: National Inst. of Standards and Technology, Gaithersburg, MD (United States). Center for Chemical Technology
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AI01-86CE90213
• OSTI ID: 10153200
• Report Number(s): CONF-901266--1; ON: DE92015582
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
025000
33 ADVANCED PROPULSION SYSTEMS
330100
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800
COMBUSTION
COMBUSTION, PYROLYSIS, AND HIGH-TEMPERATURE CHEMISTRY
DROPLETS
FLAME PROPAGATION
FLAMES
INTERNAL COMBUSTION ENGINES
KEROSENE
LASERS
SPRAYS
VELOCITY
VORTEX FLOW