Spray characteristics of a research air-assist atomizer

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5127274

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

---

1. National Bureau of Standards, Washington, DC (United States)
2. Maryland Univ., College Park, MD (United States). Dept. of Mechanical Engineering

Several different techniques are utilized to atomize a liquid fuel stream into a multitude of droplets, with a wide range of sizes and velocities, in order to increase their surface-to-volume ratio. One atomizer that has been utilized successfully in furnaces, boilers and gas turbines is the air-assist nozzle, in which a low capacity, high velocity air jet is used to atomize a low pressure fuel stream. These nozzles provide the capability to vary the atomization characteristics of the nozzle, without changing the fuel flow rate. The size and velocity distributions of the droplets generated by the atomizer have a critical effect on transport processes, and the resulting flame stability and ignition characteristics. It is, therefore, important to examine the atomization characteristics of the air-assist nozzles -- a topic which forms the basis for the present investigation. The results presented are from an ongoing investigation to obtain detailed information on droplet dynamics in sprays and spray flames. 7 refs.

• Research Organization: National Bureau of Standards, Washington, DC (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AI01-86CE90213
• OSTI ID: 5127274
• Report Number(s): CONF-8805417-1; ON: DE92015584
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
100400 -- Synthetic Fuels-- Combustion-- (1990-)
33 ADVANCED PROPULSION SYSTEMS
330103 -- Internal Combustion Engines-- Turbine
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
AIR
ATOMIZATION
CHEMICAL REACTIONS
COMBUSTION
DROPLETS
FLAMES
FLUIDS
FUELS
GASES
LIQUID FUELS
NOZZLES
OXIDATION
PARTICLES
SPRAYS
THERMOCHEMICAL PROCESSES