A study of deflagration and detonation in multiphase hydrocarbon-air mixtures

✍ Scribed by Nickolay N. Smirnov; Michael V. Tyurnikov

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 720 KB
• Volume: 96
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(94)90164-3

✦ Synopsis

This article represents a theoretical and experimental study of the problems of deflagration and detonation structure in heterogeneous media, which contains an oxidant in the gaseous phase and fuel in the form of either dispersed droplets in the oxidant flow or a thin film on the chamber walls. Detonation in such systems is shown to have a complex unsteady-state structure: the detonation front can exhibit mobile discontinuities and can pulsate periodically. A physical model of pulsating and spin detonation in heterogeneous media is developed. A system of governing equations with boundary conditions is composed that makes it possible to simulate mathematically the transition of deflagration to detonation. The transition process and the initiation of detonation are calculated numerically and studied experimentally. The comparison shows good agreement of theoretical and experimental results.