Gas percolation through sand

18th APS-SCCM; 24th AIRAPT

Proud, W.G.^1

Institute of Shock Physics, Imperial College London, London

SW7 2AZ, United Kingdom^1

关键词: Blast waves;    Grain size;    Physical process;    Propagation time;    Quartz sand;    Shock properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/11/112052/pdf
DOI  :  10.1088/1742-6596/500/11/112052

来源: IOP

【 摘 要 】

Previous research has determined the shock properties of quartz sand. The effect of the physical processes occurring with varying moisture content and particle size were shock presented. In this study the same quartz sand, in a column is subjected to blast waves over a range of pressure. The diagnostics used are pressure sensors and high-speed photography. The effect of grain size on propagation time and the effect of moisture content are determined. Aspects of particle and liquid movement are also discussed. While the velocity of the percolation through the bed is primarily controlled by grain size the effect of moisture and liquids reveals a more complex dependence.