Open AccessExperimental assessment of permeability variation with the compression of soft reticulated foams
Author(s) -
Cătălin Enescu,
Petrică Turtoi,
Traian Cicone,
C. V. Istrate
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/997/1/012009
Subject(s) - materials science , permeability (electromagnetism) , permeameter , porosity , composite material , compression (physics) , lubrication , porous medium , geotechnical engineering , mechanics , geology , chemistry , biochemistry , physics , membrane , hydraulic conductivity , soil science , soil water
The resistance to flow of imbibed fluids in soft porous structures subjected to compression can be a solution for impact attenuation. The mechanism, named ex-poro-hydrodynamic (XPHD) lubrication, is based on permeability variation with porosity, which, at its turn, depends on the compression degree of the porous structure. A literature survey revealed scarce information regarding the permeability of compressed reticulated foams or 3D fiber-based structures, used in XPHD applications. Moreover, the permeability depends on the fluid and its velocity. This paper presents experimental data of the permeability of glycerine for an in-plane, axisymmetric flow through a porous material subjected to various degrees of compression. The experiments were done on an in-house made radial permeameter with pressure differentials up to 6 bars. The experimental data was compared with the predicted results, using the well-known Kozeny-Carman equation and related formulations.