Convection effects and the stability of hydrogen flame bubbles
Hydrogen ‘flame-bubbles’ are the small flames observed in very lean hydrogen/air mixtures. Previous estimates of the flame temperature fail to account for convection, and a simple mathematical model is proposed to remedy this. In addition, convectioe gradients generated by the buoyancy of the hot gases are proposed as a mechanism to overcome the instability that appears to be associated with the large curvature of the flames.
KeywordsFroude Number Flame Temperature Lewis Number Premix Flame Simple Mathematical Model
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