Detonation properties of saturated hydrocarbons

Abstract

Calculated and experimental data on the most important parameters of combustion and detonation of saturated hydrocarbons C n H 2n+2 (from methane to eicosane) in mixtures with oxygen and air in wide ranges of initial parameters (pressure, temperature, fuel concentration, and its phase state) are presented.

Characteristics of combustion and detonation of methane-coal mixtures

“…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 .…”

The macrokinetics parameters of the hydrocarbons combustion in the numerical calculation of accidental explosions in mines

“…the required parameters of macrokinetics should ensure the flow of gas-phase reactions in test calculations with marker gas dynamic parameters. These parameters are published in well-known works, for example [10].…”