Hydrodynamic Characterization of Nickel Metal Foam, Part 1: Single-Phase Permeability

Abstract

This article presents results of the investigation of the fluid dynamic behavior in CVD processed nickel metal foams. An experimental facility was developed to measure the single-phase permeability in nickel metal foams in Darcian flow regime. Data on permeability values of seven different nickel foam samples was obtained. The pore sizes of the foam were obtained with scanning electron microscope. By defining friction factor and Reynolds number based on the permeability length scale a correlation was obtained for the foam permeability in Darcian flow regime. The result from this study was compared with the correlations reported by other researchers, and was found to be in good agreement.

Studies of CO2 absorption and effective interfacial area in a two-stage rotating packed bed with nickel foam packing

“…At the same time, as can be seen in Table 2, values of a p of foam packing with pore size 0.64 mm, 5.08 mm, and stainless steel wire mesh packing were 2916 m À1 , 342 m À1 , and 500 m À1 , respectively and the voidages of these three packings are around 95%. Because it is difficult to characterize the real fluid flow in the pore of the nickel foam packing in the centrifugal field by a visual method, the possible reason for the nickel foam packing with pore size of 0.64 mm is that much more complex flow channels and violent collisions between liquid elements and packing could generate more complex flow patterns and contacting area inside the numerous smaller pores with such a high a p [27,28]. Chen et al [29] reported the issue that the specific surface area of the packing has no such dependence on the mass transfer enhancement in an RPB.…”

Hydrodynamic Characterization of Nickel Metal Foam, Part 2: Effects of Pore Structure and Permeability

“…In order to verify this presupposition, permeability measurements on these metal foam samples were done. The procedure of the permeability measurement is explained in part 1 of the study reported in the previous study done by Miwa and Revankar (2009). …”

Predicting Tortuosity for Airflow Through Porous Beds Consisting of Randomly Packed Spherical Particles

“…In 1856, Henry Darcy formulated the first law of flow resistance through porous media (Hellstrm and Lundstrm 2006;Miwa and Revankar 2009):…”

“…There exists many formulas that describe the permeability (or filtration coefficient), but they usually produce different results and are difficult to apply in practice. In 1901, Philipp Forchheimer proposed another law applicable to a wider range of flow rates (Andrade et al 1999;Ewing et al 1999;Hellstrm and Lundstrm 2006;Miwa and Revankar 2009):…”