Defining the velocity dependence of permeability

Permeability is defined, in general, by Forchheimer's law, which accounts for changes in permeability as a function of fluid flow velocity. The Suboption Editor allows you define the velocity coefficient as a function of the void ratio of the material. For more information, see Permeability.

  1. Define permeability, as described in Defining permeability in an Abaqus/Standard analysis.”

  2. From the Suboptions menu in the Edit Material dialog box, select Velocity Dependence.

    A Suboption Editor appears.

  3. Enter the following data in the Data table:

    Beta

    Velocity coefficient, β⁢(e).

    Void ratio

    Void ratio, e.

    For detailed information on how to enter data, see Entering tabular data.

  4. Click OK to return to the Edit Material dialog box.