Darcy's Law Calculator
Calculate Q (m³/s) from hydraulic conductivity, area, head gradient, and length.
Formula
Q = -k · A · (Δh / L)
Negative sign indicates flow from high head to low head. Report magnitude for discharge.
Frequently Asked Questions
What is k?
Hydraulic conductivity depends on medium and fluid; typical sands ~10⁻³ to 10⁻⁵ m/s.
Laminar only?
Darcy's law assumes laminar flow in porous media; at high velocities it may not hold.