Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
International Journal for Multiscale Computational Engineering
IF: 1.016 5-Year IF: 1.194 SJR: 0.452 SNIP: 0.68 CiteScore™: 1.18

ISSN Print: 1543-1649
ISSN Online: 1940-4352

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.v8.i1.80
pages 103-112

Upscaling of Permeability of Porous Materials: First Insight into the Effect of Pore-Space Characteristics

Xian Liu
Institute for Mechanics of Materials and Structures, Vienna University of Technology, Vienna, Austria
Department of Geotechnical Engineering, Tongji University, Shanghai, China
Matthias Zeiml
Institute for Mechanics of Materials and Structures, Vienna University of Technology, Vienna, Austria
Roman Lackner
Material Technology Innsbruck, University of Innsbruck, Innsbruck, Austria
Herbert A. Mang
Institute for Mechanics of Materials and Structures, Vienna University of Technology, Vienna, Austria

ABSTRACT

The material phase "air'' (pore space) in porous materials determines the amount of fluid flow into and through the material and, hence, the time scale of physical/chemical degradation processes in durability aspects of materials and structures. Hereby, the pore-space characteristics, such as pore-size distribution and pore arrangement, both being accessible via respective experimental techniques, influence the transport properties of the material. In this paper, this influence is investigated within the multiscale framework, employing a so-called random pore-network model. Hereby, random arrangements of prescribed pore-size distributions are modeled, giving - under the assumption of steady-state flow conditions - access to the macroscopic permeability of the material. More specifically, three idealized pore-size distributions, i.e., (i) two different radii and (ii) constant and (iii) normal pore-size distribution, are investigated by means of several sets of network configurations. From the obtained results, both mean value and standard deviation of the macroscopic permeability corresponding to a certain pore-size distribution are determined, giving new insight into the impact of pore-space characteristics on the permeability and its variation in porous materials.

REFERENCES

  1. Carmeliet, J., Descamps, F., and Houvenaghel, G., A multiscale network model for simulating moisture transfer properties of porous media.

  2. Galle, C. and Daian, J. F., Gas permeability of unsaturated cement-based materials: Application of a multi-scale network model. DOI: 10.1680/macr.2000.52.4.251

  3. Garboczi, E. J. and Bentz, D. P., Modelling of the microstructure and transport properties of concrete. DOI: 10.1016/0950-0618(94)00019-0

  4. March and , J. and Gerard, B., Microstructure-based models for predicting transport.

  5. Mehta, P. K. and Manmohan, C., Pore size distribution and permeability of hardened cement paste.

  6. Sandouki, H. and van Mier, J. G. M., Meso-level analysis of moisture flow in cement composites using a lattice-type approach. DOI: 10.1007/BF02486899

  7. Sutera, S. P. and Skalak, R., The history of Poiseuille's law. DOI: 10.1146/annurev.fl.25.010193.000245

  8. Wikipedia, en.wikipedia.org/wiki/Hagen-Poiseuille_equation.

  9. Ye, G., Lura, P., and van Breugel, K., Modelling of water permeability in cementitious materials. DOI: 10.1617/s11527-006-9138-4

  10. Zeiml, M., Concrete subjected to fire loading — from experimental investigation of spalling and mass-transport properties to structural safety assessment of tunnel linings under fire.


Articles with similar content:

Experimental study on interfacial area concentration transport in air-water test loop
International Heat Transfer Conference 12, Vol.36, 2002, issue
Byong-Jo Yun, Un Chul Lee , Won Man Park , Dong-Jin Euh, Moon Ki Chung, Chulhwa Song
THEORETICAL MODEL OF MICROMOLD FILLING BY NANOPARTICULATE SLURRIES
International Heat Transfer Conference 13, Vol.0, 2006, issue
Randa Pitchumani, Andryas Mawardi, Y. Xiao
DEPENDENCE OF SINGLE-PHASE AND MULTIPHASE PERMEABILITY ON CAPILLARY PRESSURE: A UNIFIED APPROACH
Journal of Porous Media, Vol.14, 2011, issue 12
Ned Djilali, B. Markicevic
EXPLAINING LONGITUDINAL HYDRODYNAMIC DISPERSION USING VARIANCE OF PORE SIZE DISTRIBUTION
Journal of Porous Media, Vol.16, 2013, issue 1
Teamrat A. Ghezzehei, Juan Lopez Arriaza
ESTIMATION OF TORTUOSITY AND EFFECTIVE DIFFUSIVITY TENSORS USING CLOSURE FORMULATION IN A SINTERED POLYMER WICK DURING TRANSPORT OF A NONDILUTE, MULTICOMPONENT LIQUID MIXTURE
Special Topics & Reviews in Porous Media: An International Journal, Vol.2, 2011, issue 4
Krishna Pillai, Saman Beyhaghi