groundflow_phreaticlevel ...

Groundwater level.

In a 1D calculation this record should be given $x$ value of the groundwater level. The groundwater is below that $x$-value.

In a 2D calculation this record should be given sets of $x-y$ which specify the $y$ level of the groundwater at several $x$ locations; In 2D you need to give the $x-y$ sets as follows:

• specify $x-y$ sets for increasing $x$

In 3D the phreatic line is specified as follows. Denote the lowest x with x_0, the next higher x with x_1 etc. Denote the lowest y with y_0, the next higher y with y_1 etc. Denote the phreatic level z value for x_i y_j with z_ij. Then give the following:

• x_0 y_0 z_00 x_1 y_0 z_10 etc.
• x_0 y_1 z_01 x_1 y_1 z_11 etc.
• etc.

The sets $x,y$ need to form a regular grid in the $x,y$ plane. In 3d, the number of points in x and y direction resprectively should be set with nx and ny of the groundflow_phreaticlevel_n record.

In nodes above the phreatic level the pressure will be set to zero during the calculation.

As a special option in 2D and 3D, you can specify one value only, which sets a constant phreatic level of that value everywhere. In this special case, you do not need to specify groundflow_phreaticlevel_n.