Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/463
Título: Permeability analysis in bisized porous media: wall effect between particles of different size
Autor: Dias, Ricardo P.
Fernandes, Carla S.
Teixeira, José A.
Mota, Manuel
Yelshin, Alexander
Palavras-chave: Binary mixture
Porosity
Particle size ratio
Tortuosity
Permeability
Data: 2008
Editora: Elsevier
Citação: Dias, Ricardo P.; Fernandes, Carla S.; Teixeira, José A.; Mota, Manuel; Yelshin, Alexander (2008) - Permeability analysis in bisized porous media: wall effect between particles of different size. Journal of Hydrology. ISSN 0022-1694. 349:3-4. 470-474
Resumo: The permeability of binary packings of glass beads with different size ratio – 13.3, 20, and 26.7, was investigated. In the Kozeny–Carman equation, the dependence of the tortuosity s on the mixture porosity e(xD) was described according to s = 1/en for different volume fraction of large particles in the mixture, xD. Obtained data on packing permeability shows that the parameter n is a function of the volume fraction and particle size ratio, with values between 0.5 and 0.4. This can be explained by the wall effect resulting from the arrangement of the small particles occurring near the large particle surface. A model taking in account this effect was suggested that can be useful in the characterization of transport phenomena in granular beds as well as in engineering applications.
Peer review: yes
URI: http://hdl.handle.net/10198/463
ISSN: 0022-1694
Aparece nas colecções:DEMAT - Artigos em Revistas Indexados ao ISI/Scopus

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