SUPPRESSION OF DETONATION WAVES IN GAS SUSPENSIONS BY A CROSS LAYER OF HETEROGENEOUS PARTICLES OF UNITARY FUEL IN PIPES WITH ABRUPT EXPANSION

Abstract

 This article presents the results of numerical modeling of detonation waves in a gas suspension with a transverse layer of inhomogeneous monopropellant particles in pipes with abrupt expansion. The calculations were performed using the coarse particle method. The objective of the study is to analyze the influence of pipeline geometric parameters and the transverse inhomogeneous distribution of particle concentration on the dynamics of detonation propagation. It was found that the dimensions of the narrow and wide sections of the pipeline, as well as the height of the transverse inhomogeneity, significantly affect both the structure of the detonation wave and the stability of its propagation. The modeling revealed three characteristic regimes: stable wave propagation, complete detonation attenuation, and partial disruption with subsequent recovery. It is shown that the critical height of the transverse spatial inhomogeneity monotonically decreases with increasing relative mass content of solid particles in the gas suspension. The obtained data can be used in the design of passive detonation protection systems and in the development of explosion localization devices in pipelines.