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Permeability (earth sciences)

About: Permeability (earth sciences) is a research topic. Over the lifetime, 15424 publications have been published within this topic receiving 288535 citations.


Papers
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Journal ArticleDOI
Zheng Sun1, Xiangfang Li1, Juntai Shi1, Tao Zhang1, Fengrui Sun1 
TL;DR: In this paper, the authors employed the Beskok's models to characterize the bulk-gas transport mechanisms through circular nanotubes or slit nanopores with arbitrary aspect ratio, respectively.

140 citations

Journal ArticleDOI
TL;DR: In this article, an analytical-numerical approach is presented for computing the macroscopic permeability of fibrous porous media taking into account their microstructure, and the results are compared with the Carman-Kozeny (CK) equation and the Kozeny factor.

140 citations

Journal ArticleDOI
TL;DR: In this article, a permeability cell for measuring the permeability of mortar and concrete to gas is described, and the problems encountered and overcome during the development of the cell are discussed.
Abstract: Synopsis A permeability cell for measuring the permeability of mortar and concrete to gas is described. The problems encountered and overcome during the development of the cell are discussed. The cell is designed to test 25 mm diameter mortar samples but can also be used for 50mm diameter concrete specimens. Specimens of heights between 10 and 50mm can be tested. Measurements using the new cell are highly repeatable and reproducible. The cell is very sensitive to the influence of water/cement ratio, age and replacement of cement by pulverized-fuel ash. It can be used to obtain permeability profiles through the depth of a concrete element in order to evaluate the influence of different curing conditions or curing compounds.

139 citations

Journal ArticleDOI
Morris Salame1
TL;DR: A scale of numerical values based on polymer cohesive energy density and fractional free volume has been devised to predict permeability and also to estimate diffusion and solubility properties.
Abstract: This paper studies the correlation of polymer structure and morphology and gas permeability A scale of numerical values based on polymer cohesive energy density and fractional free volume has been devised to predict permeability and also to estimate diffusion and solubility properties

139 citations

Journal ArticleDOI
TL;DR: In this paper, the authors examined the impact of hydraulic conductivity in a porous medium on solute transport, considering the similarities and differences between parallel flow and convergent/divergent flow.
Abstract: The variation of hydraulic conductivity in a porous medium causes the fluids flowing through it to have nonuniform velocities. Variation in fluid velocity is one of the main contributors to solute dispersion, causing a part of the contaminants dissolved in the fluid to be transported with greater than average velocities. In practical problems concerning transport of radioactive or toxic wastes, the velocity of contaminant flow may be of vital importance. This paper examines a three dimensional case, considering also the similarities and differences between parallel flow and convergent/divergent flow. Fluid flow in a porous medium is shown to perfer the most conductive paths. For a medium with strongly variable permeability this effect can be very pronounced. This paper discusses the impact of this flow distribution upon solute transport. 28 refs., 11 figs., 2 tabs.

139 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202242
2021833
2020901
2019916
2018847
2017849