A measure of the ability of a porous material to allow fluids to pass through it.
(1)
k_f = \mu_f \frac{| {\bf v}|}{ | \nabla p |}
A measure of the ability of a porous material to allow fluids to pass through it.
(1)
k_f = \mu_f \frac{| {\bf v}|}{ | \nabla p |}