*FLOW

1. Element number or element set label.

2. Seepage flow type label (see About the Element Library).

3. Reference pore pressure value, $u_w^{\mathrm{\infty }}$. (Units of FL⁻².)

4. Reference seepage coefficient value, $k_s$. (Units of F⁻¹L³T⁻¹.)

Repeat this data line as often as necessary to define uniform seepage for various elements or element sets.

1. Element number or element set label.

2. Seepage flow type label (see About the Element Library).

3. Drainage-only seepage coefficient value, $k_s$. (Units of F⁻¹L³T⁻¹.)

Repeat this data line as often as necessary to define drainage-only seepage for various elements or element sets.

1. Element number or element set label.

2. Seepage flow type label (see About the Element Library).

3. Optional reference pore pressure value. If given, this value is passed into user subroutine FLOW in the variable used to define the sink pore pressure.

4. Optional reference seepage coefficient. If given, this value is passed into user subroutine FLOW in the variable used to define the seepage coefficient.

The reference pore pressure value, $u_w^{\mathrm{\infty }}$, and reference seepage coefficient, $k_s$, are defined in user subroutine FLOW for nonuniform flow.

Repeat this data line as often as necessary to define nonuniform seepage for various elements or element sets.