OGS

VermaPruess equation [41].
\[ k = k_0 \left( \frac{\phi  \phi_c}{\phi_0  \phi_c} \right)^n, \]
where \(k\) is the permeability, \(k_0\) is the initial permeability, \(\phi\) is the porosity, \(\phi_0\) is the initial porosity, \(\phi_c\) is the critical porosity, and \(n\) is the exponent.
No additional info.
Used in no endtoend test cases.