- theis(time, rad, storage, transmissivity, rate=- 0.0001, r_well=0.0, r_bound=inf, h_bound=0.0, struc_grid=True, lap_kwargs=None)¶
The Theis solution.
The Theis solution for transient flow under a pumping condition in a confined and homogeneous aquifer. This solution was presented in [Theis35].
numpy.ndarray) – Array with all time-points where the function should be evaluated
numpy.ndarray) – Array with all radii where the function should be evaluated
float) – Storage coefficient of the aquifer.
float) – Conductivity of the aquifer.
float, optional) – Pumpingrate at the well. Default: -1e-4
float, optional) – Inner radius of the pumping-well. Default:
float, optional) – Radius of the outer boundariy of the aquifer. Default:
float, optional) – Reference head at the outer boundary, as well as initial condition. Default:
bool, optional) – If this is set to
False, the rad and time array will be merged and interpreted as single, r-t points. In this case they need to have the same shapes. Otherwise a structured r-t grid is created. Default:
head – Array with all heads at the given radii and time-points.
- Return type
Theis, C., ‘’The relation between the lowering of the piezometric surface and the rate and duration of discharge of a well using groundwater storage’’, Trans. Am. Geophys. Union, 16, 519-524, 1935