Analysis of the explosion of gas mixtures with a shift in the chemical equilibrium of the products taken into account

Journal Article · Fri Jul 01 00:00:00 EDT 1983 · Combust., Explos. Shock Waves (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00790249· OSTI ID:6760016

Zhdan, S A

Starting from a representation of the detonation products as a reacting medium with an equilibrium chemical composition at each point, a generalized formulation of the problem on the explosion of a reacting gas mixture in air is given. Methaneoxygen and hydrogen-oxygen systems are considered. It is seen that almost half the energy is in the chemical component of the total internal energy behind the detonation wave front. The results of computations by the mathematical model yield greater values of the excess pressures on the shock front. Experimental data and numerical solutions are compared for the dependence of the excess pressures on the shock front radius, and are found to be in good agreement for the hydrogen-oxygen system. The methane-oxygen system shows a systematic excess in the experimental data which is apparently associated with non-one-dimensional effects in formulation of the experiment. The magnitude of the efficiency of an explosion, defined as the energy transferred to the wave during maximal detonation product expansion and the total energy initially included in the mixture, is of interest. For oxygen mixtures, only a third of the total explosion energy performs work on the surrounding air.

• Research Organization: Novosibirsk, USSR
• OSTI ID: 6760016
• Journal Information: Combust., Explos. Shock Waves (Engl. Transl.); (United States), Vol. 19:1; Other Information: Trans. from Fizika Goreniya i Vzynva, Vol. 19, No. 1, pp. 131-135, Jan 1983
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
COMBUSTION PRODUCTS
EQUILIBRIUM
GASES
DETONATIONS
CHEMICAL EXPLOSIONS
DATA COVARIANCES
EFFICIENCY
ENERGY
HYDROGEN
MATHEMATICAL MODELS
METHANE
MIXTURES
OXYGEN
ALKANES
DISPERSIONS
ELEMENTS
EXPLOSIONS
FLUIDS
HYDROCARBONS
NONMETALS
ORGANIC COMPOUNDS
450100* - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives