Modified Kozeny-Carman relationship

Input(s)

$\varnothing$: Porosity (fraction)

$\varnothing_{c}$: Percolation Porosity (fraction)

B: Geometric Factor (fraction)

d: Average Grain Diameter (m)

Output(s)

k: Permeability $\left(\mathrm{m}^{2}\right)$

Formula(s)

$$ k=B * \frac{(\emptyset-\varnothing c)^{3}}{(1+\emptyset c-\varnothing)^{2}} * d^{2} $$

Reference(s)

Wikipedia.org.