Influence of geometry modifications on the permeability of open‐cell foams. Issue 2 (1st October 2021)

• Record Type: Journal Article
• Authors: Föhst, Sonja; Osterroth, Sebastian; Arnold, Felix; Redenbach, Claudia
• Is Part Of: AIChE journal. Volume 68:Issue 2(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-10-01
• Subjects: anisotropy -- computational fluid dynamics -- Laguerre tessellation -- porous medium -- stochastic microstructure model -- virtual material design; Chemical engineering -- Periodicals; Génie chimique -- Périodiques; 660.28
• DOI: 10.1002/aic.17446
• Languages: English
• ISSNs: 0001-1541

Abstract

Abstract: A stochastic microstructure model based on a random Laguerre tessellation is used to simulate virtual open cell foam structures. Both circular cylindric and concave triangular strut cross section shapes are considered. Additional geometry modifications are introduced by relaxation of the tessellation cells using the Surface Evolver software and by closing a certain percentage of the foam windows. The effect of these modifications on the foams' permeabilities is investigated. In particular, permeability anisotropies resulting from anisotropic closing of the windows are taken into account. The dimensionless permeability (Darcy number) in the different directions is well explained by regression models using porosity, geometric tortuosity, and constrictivity as explanatory variables.