Theoretical studies on heterogeneous combustion. Progress report, March 1, 1978--February 28, 1979

Technical Report · Mon Jan 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/6104587· OSTI ID:6104587

Law, C. K.

In liquid-fueled chemical power plants, the fuel is usually introduced into the combustor in the form of a spray jet. This program aims to study the various heterogeneous processes involved during: (1) vaporization, ignition, deflagration, and extinction of single fuel droplets, and (2) the vaporization and ignition of the spray as a whole. During this period, the numerical modeling of unsteady droplet combustion in a reactive environment simulating the spray interior was completed. One basic feature of the classical droplet combustion theory, in which the instantaneous rate of fuel vaporization from the droplet is equal to the rate of fuel consumption at the flame, is questioned; a theory is formulated which shows that a significant portion of the fuel vaporized is actually used in filling up the space between the droplet and the flame instead of being consumed at the flame. The effect of possible condensation of ambient moisture on the spray vaporization rate was investigated. (DLC)

• Research Organization: Northwestern Univ., Evanston, IL (USA). Dept. of Mechanical Engineering and Astronautical Sciences
• OSTI ID: 6104587
• Report Number(s): COO-4433-2
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
DROPLETS
EVAPORATION
KINETICS
MOISTURE
PARTICLES
PHASE TRANSFORMATIONS
REACTION KINETICS
RESEARCH PROGRAMS
SPRAYS
VAPOR CONDENSATION