Radial well aquifer benchmark (Water Module)

This testcase demonstrates a situation where a well is pumping up ground water. A characteristic ground water level curve will form over time. File:Drainage freatic benchmark.png

Formulas

Stationary lowering of the ground water table in a closed water transmissive layer can be described by the following formula $\varphi (r)-{\varphi }_0=\frac{Q_0}{2\pi \cdot kD}\ln \left(\frac{r}{R}\right)$

where:

$phi(0)$: stable water level at the considered stable water table edge

$phi(r)$: water level between the considered stable water table edge and the well

$phi(rw)$: water level in the well

$kD$: transmissivity of the aquifer in m² / day

$r$: distance to the well

$R$: distance of the considered stable water table edge to the well

$Q_0$: amount of water pumped out in m³ / day