Turbulent high-speed deflagration

Structure of the turbulent high-speed deflagration propagating in a very rough channel stoichiometric Hj/Oj mixture at 150 torn... 

The following typical combustion velocities have been observed the turbulent deflagration mode with a velocity of some dozens of meters per second in lean mixtures the sound deflagration mode, high-speed deflagration with 800-1,000 m/ s velocities, when the combustion front moves with the local sound speed relative to the reaction products the quasi-detonation mode when the velocity spectra exceeds 1,100 m/s, but is 200-500 m/s less than the CJ detonation velocity. The quasi-detonation mode velocity deficit, in comparison with thermodynamic defined values, is explained by impulse losses due to interactions with walls and obstacles. 

Lee, J.H., Knystautas, R., and Freiman, A., High speed turbulent deflagrations and transition to detonation in Hj-air mixtures. Combust. Flame, 56,227,1984. 

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