An experimental study of the interaction of a shock wave with a layer of permeable material

Abstract

The interaction of a shock wave with a granular layer of spherical particles was experimentally studied in an atmospheric shock tube. Between the porous layer and the end wall of the pipe there was a particle area of pure gas. Two problem statements were considered. In the first embodiment, the structure and position of the porous layer remained unchanged. In the second variant, the granular layer was destroyed under the influence of the incident shock wave and turned into a mobile cloud of particles. For both variants, wave structures that occur both in front of the porous layer of granular particles and in the gap between the granular layer and the end wall of the shock tube are obtained and analyzed. The initial information was obtained with the help of measuring and recording equipment, which included piezoelectric pressure sensors and a multi-channel ADC Board for collecting information.

Keywords

• shock wave
• permeable material layer
• nonstationary gas filtration
• wave structure