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Darcy's Law (Flux) Calculator

Compute Darcy flux and volumetric flow from K, gradient and area.

Input Data

Hydraulic Conductivity
m/day
Hydraulic Gradient
Cross Section Area
m²

Results

q = K·i.
0.1m/day
Q = q·A.
10m³/day

At a glance:q = K·i (Darcy's law); Q = q·A. Complements darcy-weisbach and hydraulic-conductivity.

Formula

q = K·i.

Q = q·A.

$$q = K\,i,\quad Q = q\,A = K\,i\,A$$

How to Use

  1. Enter K, gradient and area.
  2. The tool returns flux and flow.

Case Studies

K=1e-4, i=0.01, A=2

q=1e-6 m/s, Q=2e-6 m³/s.

FAQ

Flux vs velocity?

Specific discharge q is superficial; actual pore velocity = q/porosity.

Related Tools

References

Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Darcy's Law (Flux) Calculator(/physics/darcy-flux)。