Evaporation, ignition, and combustion of nondilute clusters of drops

Journal Article · Thu Mar 01 04:00:00 EST 1990 · Combustion and Flame; (USA)

DOI:https://doi.org/10.1016/0010-2180(90)90139-I· OSTI ID:6879074

Bellan, J; Harstad, K ^[1]

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1. California Inst. of Tech., Pasadena, CA (USA). Guggenheim Jet Propulsion Center

A theory of evaporation, ignition, and burning of moderately dense spherical drop clusters has been developed. The theory takes into account burning of premixed air and fuel internal to the cluster at ignition and subsequent burning of fuel emitted from the cluster by a flame sheet surrounding it. The model considers interdrop interaction, momentum exchange between drops and gas, and turbulent exchange processes between the cluster and its surroundings. Calculations are performed for varying initial air-to-fuel-mass ratios, initial cluster radii, ambient gas temperatures and initial drop temperatures. Results are presented for ratios of fuel mass burned to fuel mass lost from the cluster between drop ignition and drop disappearance, fuel burned fractions at ignition and at the moment of drop disappearance, and jump conditions at ignition.

• OSTI ID: 6879074
• Journal Information: Combustion and Flame; (USA), Journal Name: Combustion and Flame; (USA) Vol. 79:3; ISSN CBFMA; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
DISPERSIONS
DROPLETS
EVAPORATION
FLAME PROPAGATION
FLAMES
FLUID FLOW
FLUIDS
FUEL-AIR RATIO
FUELS
GASES
KINETICS
MIXTURES
PARTICLES
PHASE TRANSFORMATIONS
REACTION KINETICS
TEMPERATURE DISTRIBUTION
TURBULENT FLOW