Physics Journal
Articles Information
Physics Journal, Vol.5, No.1, Mar. 2019, Pub. Date: Apr. 26, 2019
Features of Spherical Detonation in Explosive Gas Environments
Pages: 1-7 Views: 178 Downloads: 60
[01] Myron Polatayko, Department of Physical Electronics, Kyiv National University, Kyiv, Ukraine.
In one of the previous works, using the theory of explosion and the laws of conservation of mass, momentum and energy, the author managed to solve the system of equations for the spherical detonation model. The possible existence of a stationary mode at the beginning of the transition of a blast wave to detonation was proved, and a new formula appeared that determines the speed of a spherical detonation wave in reacting gases. This served as a powerful incentive for further studies of the detonation process. The proposed article is a logical continuation of the previous works. The main attention in the article is drawn to the fact of instability of the normal spherical detonation and instability of the Chapman-Jouguet regime, when the radius of the wave front considerably exceeds the critical one. The author studies the reasons for the increase in the speed of a spherical detonation wave during its transition to plane wave at large distances from the center of the explosion. The possibility of transition of a normal spherical detonation to a more stable state, with a higher energy level, in the form of a flat stationary detonation is indicated. It is assumed that two stationary states exist, that is, two energy levels for the stationary detonation, which makes it possible to explain the phenomenon of pulsating detonation in gaseous media.
Normal Spherical Detonation, Unstable State, Eyring Formula, Wave Speed, Steady State, Energy Levels, Pulsating Detonation
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