Slip Dependent Permeability Model¶
Overview¶
The slip dependent permeability model defines the relationship between the relative shear displacement and fracture permeability. In this model, fractrues/faults are represented as slip interfaces.
where is the initial fracture permeability; is the maximum permeability multiplier; is the relative shear displacement; is the slip threshold.
Parameters¶
The Slip Dependent Permeability model can be called in the
<Constitutive>
block of the input XML file.
This permeability model must be assigned a unique name via the
name
attribute.
This name is used to assign the model to regions of the physical
domain via a permeabilityModelName
attribute in the <CompressibleSolidSlipDependentPermeability>
block.
The following attributes are supported:
Name | Type | Default | Description |
---|---|---|---|
initialPermeability | R1Tensor | required | initial permeability of the fracture. |
maxPermMultiplier | real64 | required | Maximum permeability multiplier. |
name | string | required | A name is required for any non-unique nodes |
shearDispThreshold | real64 | required | Threshold of shear displacement. |
Example¶
<Constitutive>
...
<SlipDependentPermeability
name="fracturePerm"
shearDispThreshold="0.005"
maxPermMultiplier="1000.0"
initialPermeability="{1e-15, 1e-15, 1e-15}"/>
...
</Constitutive>