Time-based ensemble scattering measurements in fuel sprays

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:6707057

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

---

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

Knowledge of droplet size in sprays is important for spray combustion, pesticide and herbicide spraying, spray cooling, fire sprinklers, and many other industrial applications. The importance of measuring and evaluating time-varying information in sprays can be critical to the performance of these spray systems. For example, gas turbine and rocket motor stability is dependent on suppression of combustor frequencies which alter the atomization characteristics of the spray. High-speed movies of the atomization process have shown that steady sprays are not uniform in time but can contain clusters of droplets. Droplet clustering may have significant ramifications in combustion applications for soot production. Another time-dependent phenomenon observed in airblast-atomized sprays is a rapid change in spray angle known as fluttering. To study such phenomena, an ensemble light scattering technique was used to obtain time-resolved information on droplet mean size and number density in sprays where similar temporal features have been observed.

• Research Organization: National Inst. of Standards and Technology, Gaithersburg, MD (United States). Chemical Science and Technology Lab.
• Sponsoring Organization: USDOE; NAS/NAE; USDOE, Washington, DC (United States)
• DOE Contract Number: AI01-86CE90213
• OSTI ID: 6707057
• Report Number(s): CONF-911099-2; ON: DE93007989
• Resource Relation: Conference: Eastern section of the Combustion Institute fall technical meeting: chemical and physical processes in combustion, Ithaca, NY (United States), 14-16 Oct 1991
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SPRAYS
LIGHT SCATTERING
COMBUSTION
DENSITY
DROPLETS
GAS TURBINES
HERBICIDES
KEROSENE
PARTICLE SIZE
PESTICIDES
ROCKET ENGINES
CHEMICAL REACTIONS
DISTILLATES
ENERGY SOURCES
ENGINES
EQUIPMENT
FOSSIL FUELS
FUELS
GAS OILS
LIQUID FUELS
MACHINERY
OXIDATION
PARTICLES
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
SCATTERING
SIZE
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry
400102 - Chemical & Spectral Procedures
661200 - Techniques of General Use in Physics- (1992-)