Dias, Ricardo P.Mota, ManuelTeixeira, JoséYelshin, Alexander2012-06-112012-06-112005Dias, Ricardo P. ; Mota, Manuel; Teixeira, José A.; Yelshin, Alexander (2005). Study of ternary glass spherical particle beds : porosity, tortuosity, and permeability. Filtration. ISSN 1479-0602. p.68-751479-0602http://hdl.handle.net/10198/7037Ternary mixtures of glass beads were constructed as a model of granular packing. Porosity and permeability were experimentally determined in a wide range of mixture composition. Based on experimental data, tortuosity was calculated using the Kozeny-Carman equation. Applying the conventional relation that expresses tortuosity as the inverse of the power order of porosity, it was found that the parameter n varies with the fraction content. The observed phenomenon was explained by wall effects between particles of different sizes.engTernary mixed bedPorosityTortuosityPermeabilityjournal article