INVASION PERCOLATION IN THE PRESENCE OF NANOPORES

Fatemeh Ebrahimi
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Fatemeh Ebrahimi: Department of Physics, University of Birjand, Birjand 97178-51367, Iran

International Journal of Modern Physics C (IJMPC), 2008, vol. 19, issue 10, 1515-1528

Abstract: Site invasion percolation (IP) processes are combined with bond percolation model, to study the effects of size restriction on low capillary number immiscible displacement in heterogeneous nanoporous media. Both cases of compressible (NTIP) and incompressible defender fluid (TIP) are considered. It is found that in site IP the value of mass uptake increases with the size of invader particles, if the latter is not greater than a critical value. This occurs when the accessible porosity of the medium decreases as the size of fluid particles increases. We also investigate the effect of nanopore's concentration on the mass and the anisotropy of sample spanning cluster as well as the critical exponent of trap numbers.

Keywords: Invasiuon percolation; sample spanning cluster; heterogeneous nanoporous media; mass uptake; traps; anisotropy (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1142/S0129183108013060

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