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

作     者：Hongsheng Chen Li Xia Chenrui Li Zengyong Zheng Hongsheng Chen;Li Xia;Chenrui Li;Zengyong Zheng

作者机构：College of Materials Science and EngineeringChongqing UniversityChongqing400044China 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2023年第82卷第11期

页      面：1-12页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：financially supported by the Natural Science Foundation of Chongqing(grant No.cstc2021jcyj-msxmX0028) the Fundamental Research Funds for the Central Universities(grant No.2022CDJXY-011) 

主　　题：Penetration Granular bed Granular jet CFD-DEM 

摘      要：We present a numerical study on the penetration of spherical projectiles into a granular bed in the presence of upward gas *** to the presence of interstitial fluid,the force chains between particles in the granular bed are weakened significantly,and this distinguishes the penetration behavior from that in the absence of *** interesting phenomenon,namely granular jet,is observed during the penetration,and the mechanism for its formation and growth is attributed to the merging of granular vortices generated by the interaction between the intruder and primary ***,both the final penetration depth and the maximum diameter of the crater are found to follow a power-law dependence with the impact velocity,and the maximum height reached by the granular jet tends to increase linearly as the impact velocity increases,agreeing well with the experimental results reported in the literature.