title: Analytical derivation of tortuosity and permeability of monosized spheres: a volume averaging approach.
abstract: Macroscopic properties of granular materials are important in modeling a variety of flow and transport phenomena in many fields of science. Determination of these parameters has always been an issue among both researchers and engineers, mainly in view of tortuosity and permeability. This paper presents analytical functions for the tortuosity and permeability of monosized sphere arrays based on a volume averaging approach and eliminates some ambiguities by modification of the original representative elementary volume model. Veracity of the proposed formulations has been illustrated through comparisons with the latest available results on the subject. Good agreement is found.
authors.affiliation: Department of Civil Engineering, Sharif University of Technology, Tehran, Iran. mmahmadi@sharif.edu
authors.forename: Mohammad Mehdi
authors.initials: MM
authors.lastname: Ahmadi
authors.forename: Soheil
authors.initials: S
authors.lastname: Mohammadi
authors.forename: Ali Nemati
authors.initials: AN
authors.lastname: Hayati