Author(s): Dias, Ricardo P. ; Mota, Manuel ; Teixeira, José ; Yelshin, Alexander
Date: 2005
Persistent ID: http://hdl.handle.net/10198/7037
Origin: Biblioteca Digital do IPB
Subject(s): Ternary mixed bed; Porosity; Tortuosity; Permeability
Author(s): Dias, Ricardo P. ; Mota, Manuel ; Teixeira, José ; Yelshin, Alexander
Date: 2005
Persistent ID: http://hdl.handle.net/10198/7037
Origin: Biblioteca Digital do IPB
Subject(s): Ternary mixed bed; Porosity; Tortuosity; Permeability
Ternary 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.
FCT, FEDER