A model of H2-enhanced spray combustion

A theoretical model for hydrogen-enhanced spray combustion has been developed. It assumes evaporation limited combustion, requires specification of a droplet ignition temperature, and assumes hydrogen combustion occurs at a given temperature in a zone that is thin compared to the spray combustion zo...

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Bibliographic Details
Published in:Combustion and flame 1990-03, Vol.79 (3-4), p.319-332
Main Authors: RICHARDS, G. A, SOJKA, P. E
Format: Article
Language:English
Subjects:
Applied sciences
Combustion of heterogeneous mixtures. Incineration
Combustion. Flame
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Theoretical studies. Data and constants. Metering
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Summary:A theoretical model for hydrogen-enhanced spray combustion has been developed. It assumes evaporation limited combustion, requires specification of a droplet ignition temperature, and assumes hydrogen combustion occurs at a given temperature in a zone that is thin compared to the spray combustion zone. The model has been used to investigate how the location of hydrogen combustion affects the flame speed of a spray/hydrogen- air mixture. Flame speeds calculated without hydrogen addition are in good agreement with experimental data. Flame speeds calculated with hydrogen addition support the hypothesis that hydrogen burnup must occur early in the spray combustion zone if substantial improvement in the hydrocarbon burning rate is to be observed. (Author)
ISSN:0010-2180
1556-2921
DOI:10.1016/0010-2180(90)90143-F