Darcy's law


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Darcy's law

[′där·sēz ‚lȯ]
(fluid mechanics)
The law that the rate at which a fluid flows through a permeable substance per unit area is equal to the permeability, which is a property only of the substance through which the fluid is flowing, times the pressure drop per unit length of flow, divided by the viscosity of the fluid.
References in periodicals archive ?
Darcy's Law describes the movement of liquid through a porous medium.
Then several modified expressions of Darcy's law were developed (Huang, 1998), based on the flow rate-pressure gradient curves of core flood experiments.
The evaluation of matrix [H], which can be considered an adjusting matrix for determining the flow obeying either Darcy's law or non-Darcian law, depends on the magnitude comparison between [i.
The flow in the channel is described by Bingham model, whereas the flow in the permeable bed is according to Darcy's law.
Existing laboratory methods of determining K are based on development of a static or dynamic hydraulic head over the infiltration soil column, independent of whether the water enters into the soil from the top or the bottom, in this connection, it is necessary to emphasise that under the physical conditions of applicability of Darcy's law the K reduced to the hydraulic gradient, is equal to unity and assumed to be constant.
Modifications for the classical Darcy's law were considered by the Beavers and Joseph [2], Saffman [3] and others.
In a particulate air filter, the high operational velocities (Reynolds number > 20) often result in nonlinear deviations from Darcy's Law for flow through the media (Rivers and Murphy 2000; Chen et al.
app]) is the same as the "macroscopic" n value obtained through the modified Darcy's law, up to an acceptable error.
It is easy to solve this problem by inserting the correct values into Darcy's law.
Hooke's law of elasticity, Fourier's law of heat conduction, and Darcy's Law for fluid flow in porous media.
Added support for the fractional power Darcy's law for flow through porous media in scenarios involving turbulence.
Darcy's law is essentially similar to Fick's law for diffusion, which describes the flux (J) of a diffuse species as a function of a proportionality constant, the diffusivity (D), and the gradient in concentration of the species ([nabla]C):