Permeability object

The Permeability object defines permeability for pore fluid flow.

This page discusses:

Access

import material
mdb.models[name].materials[name].permeability
import odbMaterial
session.odbs[name].materials[name].permeability

Permeability(...)

This method creates a Permeability object.

Path

mdb.models[name].materials[name].Permeability
session.odbs[name].materials[name].Permeability

Required arguments

specificWeight

A Float specifying the specific weight of the wetting liquid, γw.

inertialDragCoefficient

A Float specifying The inertial drag coefficient of the wetting liquid, γw.

table

A sequence of sequences of Floats specifying the items described below.

Optional arguments

type

A SymbolicConstant specifying the type of permeability. Possible values are ISOTROPIC, ORTHOTROPIC, and ANISOTROPIC. The default value is ISOTROPIC.

temperatureDependency

A Boolean specifying whether the data depend on temperature. The default value is OFF.

dependencies

An Int specifying the number of field variable dependencies. The default value is 0.

Table data

If type=ISOTROPIC, the table data specify the following:

  • k.

  • Void ratio, e.

  • Temperature, if the data depend on temperature.

If type=ORTHOTROPIC, the table data specify the following:

  • k11.

  • k22.

  • k33.

  • Void ratio, e.

  • Temperature, if the data depend on temperature.

If type=ANISOTROPIC, the table data specify the following:

  • k11.

  • k12.

  • k22.

  • k13.

  • k23.

  • k33.

  • Void ratio, e.

  • Temperature, if the data depend on temperature.

Return value

A Permeability object.

Exceptions

RangeError.

setValues(...)

This method modifies the Permeability object.

Required arguments

None.

Optional arguments

The optional arguments to setValues are the same as the arguments to the Permeability method.

Return value

None.

Exceptions

RangeError.

Members

The Permeability object has members with the same names and descriptions as the arguments to the Permeability method.

In addition, the Permeability object can have the following members:

saturationDependence

A SaturationDependence object specifying the dependence of the permeability of a material on the saturation of the wetting liquid.

velocityDependence

A VelocityDependence object specifying the dependence of the permeability of a material on the velocity of fluid flow.