“…In this figure, the molar fraction (concentration of methane in the mixture is indicated by C CH4 . Table 1 shows the detonation velocity D 0 , the temperature T d and pressure p d of the detonation products, the temperature T v and pressure p v of the products in the case of an instantaneous explosion in a constantvolume bomb, the temperature of the combustion products T p in the regime with p = const, the temperature of the products of deflagration combustion T df with the maximum velocity (touching of the subsonic part of the energy release adiabat), the energy of initiation of spherical detonation E 3 , and the cell size of the detonation front a for stoichiometric methane-oxygen and methane-air mixtures (the data for ethane and propane were taken from [4] for comparisons). Table 2 shows the following data for methaneoxygen mixtures: the molar fraction of methane in the mixture C fuel , the velocity of sound c 0 in the initial mixture, the detonation velocity D 0 , the pressure of the detonation products p d , the mass velocity of the products u d , the dynamic pressure of the products ρu 2 d , the temperature of the products T d , the dimensionless thermal effect q = Q/c 2 0 and specific thermal effect Q gas , the cell size of the detonation front a, and the energy of initiation of spherical detonation E 3 .…”