Darcy's law for flow through porous media is stated as:
\[q = -K \frac{dh}{dl}\]where:
\(q\) is the specific discharge / flux density
\(\frac{dh}{dl}\) is the hydraulic gradient \(K\) is the constant of proportionality, which is universally known as the Hydraulic Conductivity (or hydraulic permeability coefficient).
डार्सी का नियम (Darcy's Law):
\[q = -K \frac{dh}{dl}\]जहां \(q\) प्रवाह दर (flux) है और \(\frac{dh}{dl}\) हाइड्रोलिक प्रवणता है। इसमें समानुपाती स्थिरांक \(K\) को हाइड्रोलिक चालकता (Hydraulic conductivity) कहा जाता है।