Dynamics of capillary flow and transport properties in porous media by time-controlled porosimetry

Cérepi, Adrian; Humbert, Louis; Burlot, R.

doi:10.1016/s0927-7757(02)00065-1

Cited by 15 publications

(6 citation statements)

References 15 publications

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“…There has recently been renewed interest in the understanding and description of the physical processes associated with capillary rise in porous media, e.g., [1][2][3][4]. Apart from its theoretical interest, capillary rise is of practical interest in a variety of situations: rising damp in building materials [5], hydraulic property tests for porous media [6], water-table dynamics [7], and irrigation management [8].…”

Section: Introductionmentioning

confidence: 99%

A new equation for macroscopic description of capillary rise in porous media

Lockington

Parlange

2004

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

A new equation for macroscopic description of capillary rise in porous media

Lockington

Parlange

2004

Journal of Colloid and Interface Science

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“…A fully automatic mercury piezometer (AUTOPOREV 9620) was applied to measure the mercury feed curves of the different GDLs. The pore size distribution was calculated based on the Washburn equation 23,24 and incoming mercury curve. The Washburn equation is…”

Section: Materials Characterizationmentioning

confidence: 99%

Surface-Functionalized Gas Diffusion Layer with Chemical-Grafted Superhydrophobic Silanes for Proton Exchange Membrane Fuel Cells

Wei,

Zhang,

Guo

et al. 2024

Energy Fuels

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Gas diffusion layer (GDL) plays a crucial role in enhancing the protonexchange membrane fuel cell (PEMFC) performance. However, the conventional GDL preparation method is typically complex and expensive, which involves coating carbon paper with polytetrafluoroethylene (PTFE) followed by high-temperature sintering. Herein, we propose a facile and low-cost strategy to fabricate surface-functionalized GDL via covalent bonding interaction with the hydrophobic agent. Benefiting from the favorable chemical grafting with a family of silane coupling agents (perfluorooctyltriethoxysilane, cetyltrimethoxysilane, and 3-aminopropyltriethylsilane), the optimized carbon paper shows high porosity and pore size (average pore diameter: 28.89 μm) as well as the superhydrophobicity (water contact angle: ∼ 150.2°) properties. As a result, the modified GDL with oxidation followed by cetyltrimethoxysilane (O-GDL-C) grafting treatment endows the PEMFC with augmented water and gas permeability, affording a peak power density of 866.4 mW cm −2 . This work paves a new way to construct an efficient GDL for PEMFCs via facile chemical grafting technology.

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“…Yuan (1991b) developed rison and subison bivariate distribution functions, characterized by entry pressure and volumes, to express pertinent petrophysical properties such as absolute permeability and cementation exponent, residual non-wetting phase saturation, as a function of pore-scale attributes. Cerepi et al (2002) use time-controlled porosimetry to develop expressions from an extended Washburn (1921b) equation by Sorbie et al (1995), accounting for pore filling time as a function of pore aspect ratio to estimate absolute permeability effective and relative permeability during a drainage process. The authors validated their results with absolute permeability measurements from 30 samples of Oligocene carbonate rocks from the Aquitaine basin and established a good correlation between the measured and calculated absolute permeability.…”

Section: Prediction Of Transport and Fluid Propertiesmentioning

confidence: 99%

Rate-Controlled Porosimetry: A State-of-the-Art Review

Daniels,

Myers,

Hathon

2023

Preprint

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Rate-controlled porosimetry is a powerful technique for studying the pore structure of porous media and the physical properties of porous media. This technique involves injecting and extracting a non-wetting fluid at a controlled rate into and from a porous medium, resulting in a fluctuating capillary pressure trace as a function of the injected non-wetting fluid volume. This review introduces the state-of-the-art rate-controlled porosimeters and techniques for studying geological porous media and the advancements made in our understanding of rate-controlled immiscible displacement processes. The insights gained from these studies are synthesized to facilitate cross-disciplinary research into the influence of pore structure on the petrophysical properties of geological porous media. Applications include enhanced oil recovery, site characterization for geological CO2 storage, assessing the integrity of engineered barrier systems for safe nuclear waste disposal, and improving pore-scale models.

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Dynamics of capillary flow and transport properties in porous media by time-controlled porosimetry

Cited by 15 publications

References 15 publications

A new equation for macroscopic description of capillary rise in porous media

A new equation for macroscopic description of capillary rise in porous media

Surface-Functionalized Gas Diffusion Layer with Chemical-Grafted Superhydrophobic Silanes for Proton Exchange Membrane Fuel Cells

Rate-Controlled Porosimetry: A State-of-the-Art Review

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