Permeability


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Related to Permeability: Relative permeability

permeability

[‚pər·mē·ə′bil·əd·ē]
(electromagnetism)
A factor, characteristic of a material, that is proportional to the magnetic induction produced in a material divided by the magnetic field strength; it is a tensor when these quantities are not parallel. Also known as magnetic permeability.
(fluid mechanics)
The ability of a membrane or other material to permit a substance to pass through it.
Quantitatively, the amount of substance which passes through the material under given conditions.
(geology)
The capacity of a porous rock, soil, or sediment for transmitting a fluid without damage to the structure of the medium. Also known as conductivity; perviousness.
(naval architecture)
The percentage of a given space in a ship that can be occupied by water.

Permeability

A measure of the ability of a material, such as rock or soil, to transmit fluids or air through it.

permeability

1. The property of a porous material which permits the passage of water vapor through it. Also See permeance.
2. The property of soil, rock, or mantle which permits water to flow through it.
References in periodicals archive ?
As the permeability rate of this material is so great, there would have to be an unrealistic amount of dirt applied to the surface for the pavement to cease functioning effectively.
There is less data on the Lithuanian landfills' physical properties, in particular for waste permeability.
In more specific words, humidity permeability changes versus temperature were observed in these nanocomposites, to the extent that the permeability of the optimum nanocomposite sample is 11.
The technology expands technological capabilities in the production from horizontal wells by connecting both low permeability and high permeability intervals production through two independent channels.
Versaperm's permeability meter is highly automated and can cope with several samples at a time.
For a five size of gradation and grain size range, it was recommended that permeability can be better related with D50 than D10.
Nevertheless, the actual maximum permeability of protective coatings toward chloride salts is not defined by this standard but only the limit for the liquid water uptake--the capillary adsorption of water should be lower than 0.
The complexity in the study are mostly water quality due to the level of permeability and transmmissivity including hydraulic conductivity which is very high, but in the aspect of water quality it needs standard construction and design in order to avoid pollution transport and dispersion of liquid waste either from man-made activities or natural origin.
Of these, 15 wells have tested to have high permeability, with permeability not yet determined for the P18 and SYS-05.
The high-temperature permeability test of oil shale
Coatings for exterior wood and masonry must allow water vapor to pass through the film in order to prevent blistering and other defects, whereas coatings for metal must have low permeability to water, water vapor, and electrolytes to minimize corrosion.
A new relationship between two important cheese-ripening descriptors was shown in relation to the water permeability of the wrapping film: an increase in the cheese core pH and an increase in the thickness of the cheeses creamy under-rind.