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 ?
Determining the flow capacity of an aquifer per unit width under unit hydraulic gradient is through transmmissivity, which is equal to the product of permeability times the saturated thickness of the aquifer.
Figure 8 shows the change of the permeability coefficient of oil shale with temperature.
All permeability measurements must be done with uniform films or sheets.
The value of the permeability to oxygen for the PP foils are comparable to those indicated for the polypropylene in the scientific literature (Tareq & Hotchkiss, 2003), the lowest permeability being found in the case of the 75 [micro]m thick foil.
The methodology for measuring permeability during an increase of hydrostatic pressure was developed at the Institute of Geonics in the Laboratory of Petrology and the Physical Properties of Rocks (Konecny and Kozusnikova, 1996; Kozusnikova and Konecny, 2011).
The experimental permeability values were compared with those obtained from Maxwell's law (Eq.
This correlation is good enough to confirm the hypothesis that negative soil permeability effects of K and Mg are important.
ii) Divide the curve into several linear sections, and consider the permeability of each linear section as a constant;
k]) is to describe the reduction ability of permeability by asphalt particles, defined as the ratio between the water phase permeabilities of the rock before and after injection of asphalt particles, also known as the coefficient of permeability declined:
Waste physical parameters, like waste permeability, or hydrology, are a very wide topic.
The permeability increase is about 21% in the pure sample while an increase of 122% is observed in the nanocomposite sample.
Group structural variables are emphasized in SIT, and intergroup permeability is devised to indicate to what extent group members can transition into another group.