Impact on granular beds

D Van Der Meer - Annual review of fluid mechanics, 2017 - annualreviews.org
The impact of an object on a granular solid is an ubiquitous phenomenon in nature, the
scale of which ranges from the impact of a raindrop onto sand all the way to that of a large …

Dynamics of cavitation bubbles near granular boundaries

AB Sieber, DB Preso, M Farhat - Journal of Fluid Mechanics, 2022 - cambridge.org
Dynamics of cavitation bubbles near granular boundaries Page 1 J. Fluid Mech. (2022), vol.
947, A39, doi:10.1017/jfm.2022.698 Dynamics of cavitation bubbles near granular boundaries …

Penetration into a granular bed in the presence of upward gas flows

H Chen, L Xia, C Li, Z Zheng - Particuology, 2023 - Elsevier
We present a numerical study on the penetration of spherical projectiles into a granular bed
in the presence of upward gas flows. Due to the presence of interstitial fluid, the force chains …

Ray systems and craters generated by the impact of nonspherical projectiles

F Pacheco-Vázquez - Physical review letters, 2019 - APS
The impact of a spherical projectile on an evened-out granular bed generates a uniform
ejecta of material and a crater with a raised circular rim. Recently, Sabuwala et al.[Phys …

Experimental investigations of crater formation on granular bed subjected to an air-jet impingement

SD Guleria, DV Patil - Physics of Fluids, 2020 - pubs.aip.org
The crater formation on granular particle beds is important for engineering applications,
chemical and process industries as well as for an explanation of related natural phenomena …

Craters produced by explosions in a granular medium

F Pacheco-Vázquez, A Tacumá, JO Marston - Physical Review E, 2017 - APS
We report on an experimental investigation of craters generated by explosions at the surface
of a model granular bed. Following the initial blast, a pressure wave propagates through the …

Millimetric granular craters from pulsed laser ablation

JO Marston, F Pacheco-Vázquez - Physical Review E, 2019 - APS
This Rapid Communication reports on an experimental study of granular craters formed by a
mechanism, namely, optical energy, via a pulsed laser focused onto the surface of a …

Closed equation model for cavity evolution in granular media

J Zeng, B Meng, X Ye, B Tian - Journal of Fluid Mechanics, 2024 - cambridge.org
Cavity evolution in granular media is crucial in explosion-driven gas–particle flows,
particularly in many engineering applications. In this study, a theoretical model was first …

Simulating maar–diatreme volcanic systems in bench-scale experiments

RG Andrews, JDL White, T Dürig… - Journal of the …, 2016 - pubs.geoscienceworld.org
Maar–diatreme eruptions are incompletely understood, and explanations for the processes
involved in them have been debated for decades. This study extends bench-scale analogue …

[PDF][PDF] 基于离散元方法的颗粒材料缓冲性能及影响因素分析

季顺迎, 樊利芳, 梁绍敏 - 物理学报, 2016 - wulixb.iphy.ac.cn
在冲击荷载作用下, 颗粒材料通过颗粒间的摩擦及非弹性碰撞可有效进行能量耗散实现缓冲作用
. 本文采用离散元方法对冲击载荷下颗粒材料的缓冲过程进行数值分析, 研究不同厚度下颗粒 …