Fibrous random materials: From microstructure to macroscopic properties

K. Yazdchi, Stefan Luding

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    1 Citation (Scopus)

    Abstract

    Fibrous porous materials are involved in a wide range of applications including composite materials, fuel cells, heat exchangers and (biological)filters. Fluid flow through these materials plays an important role in many engineering applications and processes, such as textiles and paper manufacturing or transport of (under)ground water and pollutants. While most porous materials have complex geometry, some can be seen as two-dimensional particulate/fibrous systems, in which we introduce several microscopic quantities, based on Voronoi and Delaunay tessellations, to characterize their microstructure. In particular, by analyzing the topological properties of Voronoi polygons, we observe a smooth transition from disorder to order, for increasing packing fraction. Using fully resolved finite element (FE) simulations of Newtonian, incompressible fluid flow perpendicular to the fibres, the macroscopic permeability is calculated in creeping flow regimes. The effect of fibre arrangement and local crystalline regions on the macroscopic permeability is discussed and the macroscopic property is linked to the microscopic structural quantities.
    Original languageEnglish
    Title of host publicationPowders and Grains 2013
    EditorsK. Dong R. Yang A. Yu
    Place of PublicationSydney
    PublisherAIP Publishing LLC
    Pages1142-1145
    ISBN (Print)978-0-7354-1166-1
    DOIs
    Publication statusPublished - 8 Jul 2013
    Event7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013 - Sydney, Australia
    Duration: 8 Jul 201312 Jul 2013
    Conference number: 7
    http://www.pg2013.unsw.edu.au/

    Publication series

    Name
    PublisherAIP Publishing
    Volume7

    Conference

    Conference7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013
    Abbreviated titlePowders & Grains
    CountryAustralia
    CitySydney
    Period8/07/1312/07/13
    Internet address

    Keywords

    • IR-89066
    • METIS-301947

    Fingerprint Dive into the research topics of 'Fibrous random materials: From microstructure to macroscopic properties'. Together they form a unique fingerprint.

  • Cite this

    Yazdchi, K., & Luding, S. (2013). Fibrous random materials: From microstructure to macroscopic properties. In K. D. R. Yang A. Yu (Ed.), Powders and Grains 2013 (pp. 1142-1145). Sydney: AIP Publishing LLC. https://doi.org/10.1063/1.4812138