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首页> 外文期刊>ISIJ international >Topological Consideration of 3-D Local Void Structure for Static Holdup Site in Packed Bed
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Topological Consideration of 3-D Local Void Structure for Static Holdup Site in Packed Bed

机译：填充床上静态储能网站3-D局部空隙结构的拓扑考虑

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This study attempted to conduct a topological data analysis of groups of particles in packed-bed structures to provide quantitative evaluations of void shapes. This study examined the spatial correlation between the packed bed structure and the holdup sites through geometric data obtained from the coordinates of the various particles composing the packed bed to isolate characteristic structural data for liquid holdup sites in a packed bed. When the study defined “bottlenecks” as narrow areas of a scale below capillary length, it was discovered that, in packed beds consisting of particles of a single diameter, the contribution to holdup was related to the number density of bottlenecks. Regarding the dependence on the void fraction of the holdup sites, as trends were demonstrated that differed from the continuous change that accompanies changes in the modified Capillary number, the difference from the dimensionless correlation occurs. When particles of differing diameters intermingle, the bottleneck number density increases near particles with small diameter, and the percentage of blockages from droplets increases. As position and density differ depending on the particle packing method, it is suggested that holdup sites decrease in number when particles with small diameter are appropriately dispersed.
机译：该研究试图进行填充床结构中颗粒组的拓扑数据分析，以提供空隙形状的定量评估。该研究检测了通过从组成填充床的各种颗粒的坐标获得的几何数据来检查包装床结构和保持位置之间的空间相关性，以隔离填充床中的液体储存部位的特征结构数据。当研究定义了毛细管长度低于狭窄区域的“瓶颈”时，发现，在由单个直径的颗粒组成的填充床中，对Holdup的贡献与瓶颈的数量密度有关。关于对剩余部位的空隙部分的依赖性，随着趋势的表明，与修饰毛细数的变化发生变化的连续变化不同，发生与无量纲相关的差异。当不同直径混合的颗粒时，瓶颈数密度随着直径小的颗粒近颗粒增加，并且液滴的封闭百分比增加。随着位置和密度根据颗粒填充方法而不同，建议当具有小直径的颗粒适当地分散时，保持部位的数量降低。

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