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- Title
高ポロシティを有する繊維層および粒子層中の 空隙ネットワークと流体透過特性の解析 (ボロノイ分割を利用した空隙構造と動水半径の評価)
- Authors
大 友 涼 子; 出 口 裕 仁; 原 田 周 作
- Abstract
The relationship between fluid permeability and pore structure in fibrous bed with large porosity has been investigated. Fibrous beds expressed by particle model and random particle beds were used for the permeation media having different pore structures and solid volume fractions. The permeability was calculated by Stokesian dynamics (SD) approach on the assumption of the Stokes flow. Pore structure analysis was performed on the basis of Voronoi tessellation, which enabled the extraction of pore bodies and their links. From these information, we suggested one way to estimate the hydraulic radius. The results of the hydraulic radius were uniquely related to the permeability calculated by SD method. The hydraulic radius suggested in the present study could be useful to predict fluid permeability by considering internal pore structure as well as solid volume fraction.
- Subjects
POROSITY; STOKES flow; PERMEABILITY; PORE fluids; FLUIDS
- Publication
Japanese Journal of Multiphase Flow, 2022, Vol 36, Issue 2, p266
- ISSN
0914-2843
- Publication type
Article