Anomalous Increase of Apparent Mass in a Silo due to Percolation  

作　　者：Ram Chand Abdul Qadir SHI Qing-Fan ZHENG Ning SUN Gang 拉姆;阿不杜尔;史庆藩;郑宁;孙刚(Key Laboratory of Cluster Science of Ministry of Education,and School of Physics,Beijing Institute of Technology,Beijing 100081;Beijing National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190)

机构地区：[1]Key Laboratory of Cluster Science of Ministry of Education,and School of Physics,Beijing Institute of Technology,Beijing 100081 [2]Beijing National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190

出　　处：《Chinese Physics Letters》2011年第9期260-262,共3页中国物理快报（英文版）

基　　金：by the National Natural Science Foundation of China under Grant Nos 10975014 and 10875166.

摘　　要：The apparent mass at the bottom of a granular pile confined in a vertical tube decreases for denser granular packing.We report that the denser granular packing comprising two different diameters of granules augments the apparent mass instead.This anomalous behavior occurs when small granules are stacked on the large ones.In the case of anomalous increase,a percolation effect is found and correlated with the augment of apparent mass at the bottom of the granular column.Finally,the results are qualitatively explained by using the Janssen model.

关 键 词：APPARENT PACKING instead 

分 类 号：O35[理学—流体力学]