Effect of atomization air on droplet dynamics of spray flames
- National Inst. of Standards and Technology, Gaithersburg, MD (United States). Center for Chemical Technology
- Maryland Univ., College Park, MD (United States). Dept. of Mechanical Engineering
Fuel spray combustions is an important part of a wide variety of propulsion and power systems such as furnaces and gas turbine combustors, afterburners, fuel-injection internal combustion engines, liquid rocket engines, etc. Recent studies using air-assist nozzles have shown that the design and fabrication of these nozzles can directly influence spray circumferential uniformity, i.e., the presence of asymmetrical fuel flux profiles in combustors. The practical implications of these fuel flux nonuniformities are that they seriously alter the spray structure, which subsequently affects droplet/air interactions, local fuel/air mixing, overall flame characteristics and combustor performance, and pollutant emission levels. In addition, the effect of aerodynamic factors on spray characteristics has been investigated. This paper discusses the effect of atomization air on the droplet dynamics of spray flames formed by an air-assist nozzle. Presented are spatial distributions of mean droplet velocity and their probability distributions, which provide quantitative information for examination of the observed spray flame features.
- Research Organization:
- National Inst. of Standards and Technology, Gaithersburg, MD (United States). Center for Chemical Technology
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AI01-86CE90213
- OSTI ID:
- 5155670
- Report Number(s):
- CONF-881215-6; ON: DE92015583
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330100 -- Internal Combustion Engines
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ATOMIZATION
CHEMICAL REACTIONS
COMBUSTION
DYNAMICS
FLAME PROPAGATION
FLAMES
FLUIDS
FUELS
GASES
LIQUID FUELS
MECHANICS
NOZZLES
OXIDATION
SPRAYS
THERMOCHEMICAL PROCESSES