Permeability wiki
WebFeb 2, 2016 · Permeability measured under simulated formation stress using formation brine is usually best. Routine air permeability data are almost always optimistic, particularly at low permeability. Correction for slip, net confining stress, and any rock-fluid interaction (should it exist) is necessary. WebPermeabilitaje v elektrotechnicefyzikální veličina, která vyjadřuje vliv určitého materiálu nebo prostředí na výsledné účinky působícího magnetického pole. Některá prostředí tyto účinky zesilují, jiná je zeslabují a existují také prostředí bez tohoto vlivu. Značení a definice[editovat editovat zdroj] značka μ(řecké mí) jednotky
Permeability wiki
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Webpermeability noun per· me· abil· i· ty ˌpər-mē-ə-ˈbi-lə-tē 1 : the quality or state of being permeable 2 : the property of a magnetizable substance that determines the degree in … WebNegative refraction is the electromagnetic phenomenon where light rays become refracted at an interface that is opposite to their more commonly observed positive refractive properties. Negative refraction can be obtained by using a metamaterial which has been designed to achieve a negative value for (electric) permittivity (ε) and (magnetic) …
WebPermeability (earth sciences), a measure of the ability of a material (such as rocks) to transmit fluids. Relative permeability, in multiphase flow in porous media. Permeability (foundry sand), a test of the venting characteristics of a rammed foundry sand. Hydraulic conductivity, the permeability of soil for water. Permeability, permeable, and semipermeable may refer to: Semipermeable membrane, a membrane which will allow certain molecules or ions to pass through it by diffusionVascular permeability, the movement of fluids and molecules between the vascular and extravascular compartmentsPermeation of a gas or … See more • Permeability (earth sciences), a measure of the ability of a material (such as rocks) to transmit fluids • Permeability (foundry sand), a test of the venting characteristics of a rammed foundry sand See more • Air permeability, characteristic of textile fabrics, measuring the ease of passage of air through them • "Impermeable" (song), a song by Ha*Ash See more • Permeability (electromagnetism), the degree of magnetization of a material in response to a magnetic field See more • Permeability (nautical), in ship design, the percentage of empty space in a compartment or tank • Permeability (spatial and transport planning), the extent to which the layout of … See more
WebOxygen permeability ( OP) is a parameter of a contact lens that expresses the ability of the lens to let oxygen reach the eye by diffusion. In soft contact lenses, it is dependent on the thickness of the lens and the material of the lens, especially concerning the water content. Because of this dependence on thickness, transmissibility level ... WebPermeability is a measure of the ease of passage of liquids or gases or specific chemicals through the material. Permeability is determined by applying a head and determining the depth of penetration or the amount of liquid or gas passing through the sample.
WebJun 3, 2015 · 5. Permeability is controlled by a pore dimension of a selected subset of the pore population and can be determined from capillary pressure by mercury injection (see Estimating permeability based on pore dimension ). Mercury injection can be applied to determine the permeability of small or fragmented samples. 6.
WebGAS PERMEABILITY CONSTANTS 2533 AP (7) Following the general rule of using the same unit of pressure in both pV and Ap, the units of P are given by (cm2/sec)(To/aT). Since (l/a-To/T) is a dimensionless number, P is essentially given in units of cm2/sec, and its numerical value differs from P expressed by the compos- ite units by a factor of (To/aT). the snitterfield armsWebPermeability. The ease with which fluid is transmitted through a rock's pore space is called permeability. Although a rock may be very porous, it is not necessarily very permeable. Permeability is a measure of how interconnected the individual pore spaces are in a rock or sediment. A sandstone is typically porous and permeable. the snite museum of artWebJun 15, 2015 · In low-permeability sandstones, permeability to water (k w) is systematically less than the Klinkenberg-corrected permeability (k L).A correction equation based on >100 samples with a permeability range of 0.0001< k L <1 md is k w = k L 1.32.The correction is only approximate, as scatter on a graph of k w vs. k L is high at k L <0.01 md. Surprisingly, … the snitcher