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http://dx.doi.org/10.5916/jkosme.2010.34.2.250

The Characteristics of the Flame Propagation Velocity and Volume Integral of Reaction Rate with the Variation of Nozzle Diameter and Fuel Injection Flow Rate for a Liftoff Flame  

Ha, Ji-Soo (계명대학교 에너지환경과학과)
Kim, Tae-Kwon (계명대학교 기계자동차공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.34, no.2, 2010 , pp. 250-258 More about this Journal
Abstract
A numerical analysis of reactive flow in a liftoff flame is accomplished to elucidate the characteristics of flame propagation velocity and volume integral of reaction rate with the variation of nozzle diameter and fuel injection flow rate in a liftoff flame consisted with fuel rich region, fuel lean region and diffusion flame region. The increase of fuel injection velocity enhances flame propagation velocity for the selected three nozzle diameter(d=0.25, 0.30, 0.35mm), but its effect on the flame propagation velocity is not much greater than 4.3%. The increase of fuel flow rate is directly and linearly related with the volume reaction rate and so the volume reaction rate, not the flame propagation velocity, might be considered to accommodate the variation of fuel flow rate in a liftoff flame.
Keywords
Liftoff flame; Flame propagation velocity; Nozzle diameter; Volume integral of reaction rate; Flame surface area;
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