Awazu A
Department of Mathematical Sciences, Osaka Prefecture University, Sakai 593, Japan.
Phys Rev Lett. 2000 May 15;84(20):4585-8. doi: 10.1103/PhysRevLett.84.4585.
We simulate size segregation in granular mixtures which are almost completely packed in a rotating drum. Instead of a 3D drum, we simulate a 2D thin rotating box which is almost completely packed with granular mixtures. The phase inversion of a radially segregated pattern which was found in a 3D experiment is qualitatively reproduced with this simulation. A global convection appears after a radial segregation pattern is formed, and this convection induces an axially segregated pattern.
我们模拟了几乎完全填充在旋转鼓中的颗粒混合物的尺寸分离。我们不是模拟三维鼓，而是模拟一个几乎完全填充有颗粒混合物的二维薄旋转盒。通过该模拟定性地再现了在三维实验中发现的径向分离模式的相反转。在形成径向分离模式后出现全局对流，并且这种对流诱导出轴向分离模式。
