The influence of structural parameters on the permeability of ceramic foams

Abstract

-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.

Towards a more realistic modeling of solid foam: Use of the pentagonal dodecahedron geometry

“…Only few authors compare the estimated specific surface area with the experimental data. Moreira and Coury (2004) measured the specific surface area by image analysis. The authors took into account the perimeters of the solid phase of a cross section of the solid foam and then multiplied it by the length of the sample.…”

Experimental characterization of single and two-phase flow through nickel foams

“…Aluminum Antohe et al (1997), Paek et al (2000), Boomsma and Poulikakos (2002), Bhattacharya et al (2002), Hwang et al (2002), Phanikumar and Mahajan (2002), Tadrist et al (2004), Alvarez Hernandez (2005), Despois and Mortensen (2005), Liu et al (2006), Azzi et al (2007), Dukhan and Patel (2008) Carbon Gou et al (1998), Hunt and Tien (1988) Ceramic Lopes and Segadaes (1996), Innocentini et al (2005), Richardson et al (2000), Moreira and Coury (2004), Lacroix et al (2007), Incera Garrido et al (2008). Copper Zhao et al (2001), Topin et al (2006), Rodrigues et al (2008), Pilon et al (2008) Iron and alloy Floyd (2001), Zhao et al (2001), Giani et al (2005) Nickel Langlois andCoueret (1989), Montillet et al (1992), Topin et al (2006), Medraj et al (2007), Huang et al (2009) Others Stainless Steel: Floyd (2001; Inconel: Reutter et al (2006) I.…”

The Effect of Changing the Particles Diameter on Pressure Drop in Flow of Three-Phase (Air-Water-Gasoil)

“…The important components of system are: compressor (8) is to compressed the atmospheric air to store in reservoir (9) for stability. Centrifugal pump (3) is to provide water from tank (1) .…”