Field driven charging dynamics of a fluidized granular bed

被引：23

作者：

Yoshimatsu, R. ^{[1
]}

Araujo, N. A. M. ^{[2
,3
]}

Shinbrot, T. ^{[4
]}

Herrmann, H. J. ^{[1
,5
]}

机构：

[1] Swiss Fed Inst Technol, Computat Phys Engn Mat, IfB, Wolfgang Pauli St 27, CH-8093 Zurich, Switzerland

[2] Univ Lisbon, Fac Ciencias, Dept Fis, P-1749016 Lisbon, Portugal

[3] Univ Lisbon, Ctr Fis Teor & Computac, P-1749016 Lisbon, Portugal

[4] Rutgers State Univ, Dept Biomed Engn, Piscataway, NJ 08854 USA

[5] Univ Fed Ceara, Dept Fis, BR-60451970 Fortaleza, Ceara, Brazil

来源：

SOFT MATTER | 2016年 / 12卷 / 29期

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

ELECTROSTATIC FORCE; ELECTRIFICATION; SIMULATION; SALTATION; CLOUDS;

D O I：

10.1039/c6sm00357e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A simplified model has previously described the inductive charging of colliding identical grains in the presence of an external electric field. Here we extend that model by including heterogeneous surface charge distributions, grain rotations and electrostatic interactions between grains. We find from this more realistic model that strong heterogeneities in charging can occur in agitated granular beds, and we predict that shielding due to these heterogeneities can dramatically alter the charging rate in such beds.

引用

页码：6261 / 6267

页数：7

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