沙漏计时原理二维数值模拟

大学物理 ›› 2008, Vol. 27 ›› Issue (9): 47-47.

沙漏计时原理二维数值模拟

李霖渊胡林许锋张忠政曲东升张兴刚孔维姝

贵州大学理学院贵州省光电子技术与应用重点实验室,贵州贵阳550025

出版日期:2008-09-25 发布日期:2008-09-20

Numerical simulation of sandpile avalanche model

Online:2008-09-25 Published:2008-09-20

摘要/Abstract

摘要： 提出沙漏计时二维数值模型，并用元胞自动机的方法对该模型进行计算机模拟．结果表明由于开口处沙粒的流动而引起的沙堆崩塌行为是一个准周期性振荡过程，开口大小与崩塌总时间近似成线性关系．特殊的开口位置会引起崩塌“拍”，且随沙堆高度呈周期性变化．

关键词: 沙漏计时, 二维数值模拟, 振荡周期

Abstract: A two-dimensional sandpile avalanche model of silo-timing is proposed. By using the celluar automata method, we perform the computer simulation for this model. The results show that there is a periodic oscillation for the flow of entrance granular in the process of granular avalanche. The total time of avalanche increases linearly with the size of hole. The beating of avalanche occurs as the entrance is a special place and changes periodically with granular height.

Key words: silo- timing, two- dimensional numerical simulation, oscillating period

中图分类号:

O411.3

李霖渊胡林许锋张忠政曲东升张兴刚孔维姝. 沙漏计时原理二维数值模拟[J]. 大学物理, 2008, 27(9): 47-47.