Permeability model as proposed by Olivella&Alonso.

This property must be a medium property, it computes the permeability in dependence of the strain

The model was proposed in [2] and it was further investigated in [31] .

The model takes the form of

$\mathbf{k} = k_\text{m} \mathbf{I} + \frac{b}{a} \left( \frac{b^2}{12} - k_\text{m} \right) \left( \mathbf{I} - \mathbf{M} \right)$

with

$\mathbf{M} = \vec{n} \otimes \vec{n}$

and

$b = b_0 + \Delta b \\ \Delta b = a \langle \varepsilon_\text{n}- \varepsilon_0 \rangle$

where

$k_\text{m}$	permeability of undisturbed material
$b$	fracture aperture
$b_0$	initial aperture
$a$	mean fracture distance
$\vec{n}$	fracture normal vector
$\varepsilon_n$	strain in fracture normal direction
$\varepsilon_0$	threshold strain

Child parameters, attributes and cases

Additional info

No additional info.

Used in no end-to-end test cases.