Open AccessPhysical model and simulation system of powder packing
Author(s) -
Wenjun Zhong,
He Ke-Jing,
Zhaoyao Zhou,
Xia Wei,
Yuanyuan Li
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.21
Subject(s) - van der waals force , atomic packing factor , process (computing) , materials science , sphere packing , binary number , computer simulation , molecular dynamics , mechanics , statistical physics , physics , computer science , composite material , mathematics , arithmetic , nuclear magnetic resonance , quantum mechanics , molecule , operating system
The physical model and the computational system for powder packing process simulation are presented, and the high performance computing methods of simulating the random packing of mixed particles with different sizes are studied. In the simulation system the effects of gravity, contact forces, damping, friction, van der Waals force etc are take into account, therby forming several kinds of mechanical models and damping models. The system is very suitable for the three\|dimensional simulation of large scale powder packing process. Finally, to demonstrate the usefulness of the simulation system, two typical applications are presented in the paper. One is to simulate the random packing of binary mixture with size ratio 10, and when the number of small particles is 300 times as large as that of big particles, the maximal packing density volume fraction is achieved to be 0.824, and the other is to simulate the random mixed packing dynamics of particles with two different densities. The segregation phenomenon and clustering phenomenon take place obviously after the packing process has come to an end. The physical model and the simulation system presented in this paper are not only suitable for the study of powder packing process, but also applicable to the packing process simulation of spherical objects.