Influence of Contactopy on Two-Dimensional Brazil-Nut Effect

Workshop and International Seminar on Science of Complex Natural Systems

Kesuma, Teja^1 ; Aji, Dimas Praja Purwa^1 ; Viridi, Sparisoma^2 ; Suprijadi^2

Master Program in Computational Science, Institut Teknologi Bandung, Indonesia^1

Department of Physics, Institut Teknologi Bandung, Indonesia^2

关键词: Brazil nut effect;    Center of mass;    Influence of density;    Initial conditions;    Initial configuration;    Molecular dynamics methods;    Number of contacts;    Vertical direction;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/31/1/012001/pdf
DOI  :  10.1088/1755-1315/31/1/012001

来源: IOP

【 摘 要 】

Using hard sphere collision scheme and molecular dynamics method simulation, two-dimension Brazil-Nut Effect (BNE) is conducted. BNE inital configurations are artificially created to obtain number of contacts between the grains, called as contactopy. It is observed that from initial condition until the end of BNE observation, center-of-mass in vertical direction tends to decrease, while contactopy tends to increase, which are similar to the reported results in a Gedankenexperiment (Viridi et al., 2014). Initial configurations which are also dependent on contactopy influence the rise time since it can override influence of density ratio that should affect rise time (Möbius et al., 2001). We investigate on how the intruder rise time influenced by contactopy, as well as density.