沙堆分离分层中新现象的计算机模拟

Computer Simulation of New Phenomena of Segregation and Stratification in Sandpiles Modle

研究了由大小不同的两种粒子形成二维沙堆时的粒子空间分布规律 ,借助于数学沙粒模型 ,利用 4个参数 ,对 2 4种所有可能的情形进行了系统地模拟 ,得出了粒子空间分布特点 ,并据此把沙堆分成 7类 :严格分离、整体分离 (含分层 )、整体分离 (含直立 )、准周期混合 (含分离 )、分层、直立分层、直立分层 (含混合 ) .

The distribution of particles in two dimensional sandpile is studied,which is made of two types of particle in different size,and the result with four parameters in the 24 situations basing on mathematical sand particle model is simulated.The relationship between distributions and parameters is obtained.Seven classes of sandpile:absolute segregation,segregation(including stratification),segregation(including vertical stratification),quasi periodic mixing(including segregation),stratification,vertical stratification,vertical stratification(including mixing) is got.The behavior of each of these classes is explained.