SciELO - Scientific Electronic Library Online

 
vol.21 issue1Heat transfer in packed beds: experimental evaluation of one-phase water flowAnalysis of the fluid-dynamic behavior of fluidized and vibrofluidized bed containing glycerol author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Brazilian Journal of Chemical Engineering

Print version ISSN 0104-6632On-line version ISSN 1678-4383

Abstract

MOREIRA, E. A.  and  COURY, J. R.. The influence of structural parameters on the permeability of ceramic foams. Braz. J. Chem. Eng. [online]. 2004, vol.21, n.1, pp.23-33. ISSN 0104-6632.  http://dx.doi.org/10.1590/S0104-66322004000100004.

Ceramic foams are a new structural material, characterized by a high porosity and a large surface area and made of megapores interconnected by filaments. This results in a structure with low resistance to fluid flow, making them appropriate for use as a filter. This work studies the influence of several structural parameters, such as porosity, tortuosity, surface area and pore diameter, in predicting the permeability of ceramic foams. Foams with different pore densities were used as porous media. Permeability was measured utilizing water as the flowing fluid. The results show that the predicted permeability scatters widely with the parameters under study. Pore diameter was the structural parameter that best represented the media. An Ergun-type correlation was fitted to the data and represented very well the permeability of the media in all foams under the experimental conditions studied.

Keywords : Ceramic foams; permeability; flow through porous media.

        · text in English     · English ( pdf epdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License