Pressure dependent porosity¶
Overview¶
This model assumes a simple exponential law for the porosity as function of pressure, i.e.
where is the reference porosity at reference pressure, , is the pressure and, is the compressibility.
Parameters¶
The following attributes are supported:
Name | Type | Default | Description |
---|---|---|---|
compressibility | real64 | required | Solid compressibility |
defaultReferencePorosity | real64 | required | Default value of the reference porosity |
name | string | required | A name is required for any non-unique nodes |
referencePressure | real64 | required | Reference pressure for solid compressibility |
Example¶
<Constitutive>
...
<PressurePorosity name="rockPorosity"
referencePressure="1.0e27"
defaultReferencePorosity="0.3"
compressibility="1.0e-9"/>
...
</Constitutive>