Darcy's law

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Related to Darcy law: Hydraulic conductivity

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 ?
In this work, we have extended the existence and uniqueness of solution result in literature for the porous medium flow problem based on the nonlinear Brinkman-Forchheimer-extended Darcy law. The existing result is valid only for constant porosity and without the considered convection effects, and our result holds for variable porosity and it includes convective effects.
Darcy law is considered in two-phase system without the gravitational forces; the differential form of the Darcy law can be extended to three-phase system with and without gravitational forces.
From here on, all our numerical experiments are carried out within the range of the modified Darcy law validity (namely around former experimental values) in spite of the variety of conditions tested; namely different values of k and n (therefore [[mu].sub.app]) which correspond to different sago concentrations C and temperatures T in the experimental rheology for the solutions.
Furthermore, when free C[O.sub.2] phase evolves, the flow dynamics become more complicated because of complicated phase interference (e.g., gas-lifting phenomena) which may not be accounted by a Darcy law based model.