Darcy's law


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Dar·cy's law

 (där′sēz′)
n. Geology
A law stating that the rate at which a fluid flows through a permeable medium, such as an aquifer, is directly proportional to the drop in elevation between two places in the medium and inversely proportional to the distance between them.

[After Henry Philibert Gaspard Darcy.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
One of the most important equations in hydrology, Darcy's law, has long been used to describe the flow of fluids through a porous medium, like rocks and soil.
These facts allow us to use Darcy's law in its basic form (1) or derived to get the impregnation time (2).
We begin setting up the mathematical model by regarding the interstitium as an isotropic porous material, and describe the flow through the interstitium by Darcy's law (Scheidegger, 1963; Whitaker, 1986; Lowe & Barbenel, 1988; Bear, 1988; Huyghe, Arts, Van Campen, & Reneman, 1992), according to Equation 1:
Darcy's law is usually adopted to describe the water flow in these theories of consolidation.
The 2D models, based on the dual-porosity model and mathematic analysis, are established by taking the fracture as interfaces within the Forchheimer flow while the flow in the surrounding matrix is such that Darcy's law is adequate [30-32], but those studies only set few fractures in porous media.
This non-Darcy effect behaves as nonlinear relationship between flow and pressure difference, and threshold pressure gradient is used to revise Darcy's law, seen in [27].
Observed seepage velocities were faster than those predicted from Darcy's Law using hydraulic conductivities for gravel and sand.
To date, Darcy's law (Darcy, 1856) is fundamentally used in petroleum engineering, soil science, underground hydrology and hydrotechnies to mathematically describe the flow through porous media.
The well known Darcy's law describes the flow of fluid through porous media.
Darcy conducted permeability test of saturated soil and developed Darcy's law 1.