Study of ternary glass spherical particle beds : porosity, tortuosity, and perm...

• Autor(es): Dias, Ricardo P. ; Mota, Manuel ; Teixeira, José A. ; Yelshin, Alexander
• Data: 2005
• Identificador Persistente: http://hdl.handle.net/10198/7037
• Origem: Biblioteca Digital do IPB
• Assunto(s): Ternary mixed bed; Porosity; Tortuosity; Permeability
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

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.