A model of H2-enhanced spray combustion

✍ Scribed by G.A. Richards; P.E. Sojka

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 919 KB
• Volume: 79
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(90)90143-f

✦ Synopsis

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.