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Effects of Different Jet Fuel Characteristics on Spray Flame Lift-off Height

Faisal Abnisa

Ensuring economical and clean combustion performance of liquid-fueled engines needs comprehension of the influence of fuel composition and properties on flame behavior, like flame ascent height (LOH) and lean blowout limit (LBO). Spray flame stability is powerfully full of each the fuel reactivity and physical properties. Herein, the flame stability mechanism diagrammatical by LOH is investigated for seven jet rotary engine fuels, as well as surrogate, different and standard jet fuels, employing a laboratory spray burner. supported the experimental observations, this work introduces a brand new analysis, that provides insight into the competing/complementing processes that occur in an exceedingly multi-phase reacting system and highlights the key properties vital in spray flame dynamics, accounting for each the fuel spray/vaporization likewise because the chemical reactivity, to elucidate the relative variations in LOH of complicated multicomponent fuels. Results show that spray flame stabilization happens once there’s a balance between the native spray burning speed and therefore the incoming jet speed that is powerfully related to stratified flame speed and therefore the relative quantity of liquid and aerosolized fuel crossing the flame heat region.