Areal seepage (recharge rate)

Attribute: FLAE [see below] (horizontal and 3D models only),

The data type defines inflow and outflow rates which refer to elements or rather areas. For example, recharge or exfiltration rates can be assigned to elements where inflow is positive or negative, respectively. The boundary condition FLAE can also be defined as a transient boundary condition ( transient FLAE data and EFLA data).

Meaning of column 16 in the model file:

Blank = the unit of the value is m³/element/TU (TU = time unit), the value is assigned to each element in the following list as explicit inflow / outflow rate.

'*' = the unit of the value is m³/m²/TU, the value is assigned to each element in the following list as inflow / outflow rate per m² (i.e. infiltration rates, recharge).

'/' = the unit of the value is m³/all elements of the list/TU, i.e. the value is a total value which is distributed to all elements in the following list in proportion to their element areas

Example:

FLAE recharge rate

0.50 * 1- 10

-20000. 11- 14

50000.00 / 15- 19

Elements 1 to 10 have a recharge rate of 0.5 m³/m²/TU from precipitation. Elements 11 to 14 are withdrawal wells, where each well extracts 20,000 m³/TU from the aquifer. Elements 15 to 29 are infiltration basins with a total rate of 50,000 m³/TU. The total amount is distributed to the single element areas.