Three-dimensional simulation of random packing and pore blocking phenomena during microfiltration
Three-dimensional simulation of random packing and pore blocking phenomena during microfiltration
复制标题
微滤过程中随机堆积和孔堵塞现象的三维模拟
DOI：
10.1016/0011-9164(95)00023-u
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发表时间：
1995
期刊：
影响因子：
9.9
通讯作者：
S. Kimura
中科院分区：
文献类型：
--
作者：
T. Kawakatsu;M. Nakajima;S. Nakao;S. Kimura
假设基于菱面体四方排列的三维堆积结构，模拟了等尺寸球体的随机堆积和孔堵塞现象。根据球体之间的接触模式和布朗运动，用简单的规则确定球体运动。根据标准规则，空隙率为 0.37，这与随机密堆积获得的值一致。该方法对于不同类型的填料也很有用，因为当使用其他规则时，空隙率从 0.26 变化到 0.97。使用球体浓度作为参数解释了从孔堵塞到滤饼过滤的转变机制。
Random packing and pore blocking phenomena by equal-sized sphere were simulated assuming a three-dimensional packing structure based on rhombohedral tetragonal ordination. Sphere movements were determined with simple rules in accordance with contact patterns between spheres and Brownian motion. With the standard rule the void fraction was 0.37 which agrees with the value obtained with random close packing. The method was also useful for different types of packing since the void fraction varied from 0.26 to 0.97 when other rules were used. Transition mechanism from pore blocking to cake filtration was explained using sphere concentration as a parameter.