粒状材料微观结构中的孔径分布

Pore Size Distribution in Granular Material Microstructure.

作者信息

Roozbahani M Mahdi, Borela Rodrigo, Frost J David

机构信息

Computational Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.

Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.

出版信息

Materials (Basel). 2017 Oct 27;10(11):1237. doi: 10.3390/ma10111237.

DOI:10.3390/ma10111237

PMID:29077058

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5706184/

Abstract

Pore scale modeling plays a key role in fluid flow through porous media and associated macroscale constitutive relationships. The polyhedral shape and effective local pore size within granular material microstructure are computed in this study by means of the Euclidean Distance Transform (EDT), a local maxima search (non-maximum suppression), and a segmentation process. Various synthetic packed particles are simulated and employed as comparative models during the computation of pore size distribution (PSD). Reconstructed un-sheared and sheared Ottawa 20-30 sand samples are used to compute PSD for non-trivial and non-spherical models.

摘要

孔隙尺度建模在流体通过多孔介质的流动以及相关的宏观尺度本构关系中起着关键作用。本研究通过欧几里得距离变换（EDT）、局部最大值搜索（非极大值抑制）和分割过程来计算粒状材料微观结构内的多面体形状和有效局部孔径。在计算孔径分布（PSD）时，模拟了各种合成填充颗粒并将其用作对比模型。使用重建的未剪切和剪切渥太华20 - 30砂样来计算非平凡和非球形模型的PSD。