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What is difference between hydraulic conductivity and permeability?
Wiki User
∙ 11y ago
Permeability is a measure of how well a porous media transmits a fluid. It has nothing to do with the fluid itself. It is measure in (length)2.
The Hydraulic Conductivity is a measure of how easily water moves through the porous media. It depends on the permeability of the matrix, but also is a function of the fluid. It is a measure of (length)/(time)
Wiki User
∙ 11y ago
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Difference between pearmeability and permeability coefficient?
Permeability is part of the proportionality constant in Darcy `s law which relates discharge (flow rate) and fluid physical properties (e.g. viscosity), to a pressure gradient applied to the porous media:The proportionality constant specifically for the flow of water through a porous media is called the hydraulic conductivity; permeability is a portion of this, and is a property of the porous media only, not the fluid. Given the value of hydraulic conductivity for a subsurface system, k, the permeability can be calculated as:κ is the permeability, m2k is the hydraulic conductivity, m/sμ is the dynamic viscosity, kg/(m·s)ρ is the density of the fluid, kg/m3g is the acceleration due to gravity, m/s2.v is the superficial fluid flow velocity through the medium (i.e., the average velocity calculated as if the fluid were the only phase present in the porous medium)ΔP is the applied pressure difference (Pa)Δx is the thickness of the bed of the porous medium (m)
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