Seepage Velocity

Written by Jerry Ratzlaff. Posted in Fluid Mechanics

Seepage velocity represent the actual velocity of a fluid flowing through the void spaces.

  • See Darcy's Law

formula

\(v_s = \frac { v A} { A_v} \)

Where:

\(v_s\) = seepage velocity

\(v \) = darcy velocity or flux

\(A\) = flow gross cross sectional area

\(A_v\) = voids effective cross sectional area

\(P\) = porosity

Solve for:

\(v_s = \frac { v} { P} \)

\(v = \frac { v_s   A_v} { A} \)

\(v = v_s   P \)

\(A = \frac { v_s   A_v} { v}   \)

\(A_v = \frac { v A} { v_s} \)

\(P = \frac { v} { v_s} \)