anaflow.tools.special.grf_solution
- grf_solution(time, rad, storage, conductivity, dim=2, lat_ext=1.0, rate=-0.0001, h_bound=0.0, struc_grid=True)[source]
The general radial flow (GRF) model for a pumping test.
- Parameters
time (
numpy.ndarray
) – Array with all time-points where the function should be evaluated.rad (
numpy.ndarray
) – Array with all radii where the function should be evaluated.storage (
float
) – Storage coefficient of the aquifer.conductivity (
float
) – Conductivity of the aquifer.dim (
float
, optional) – Fractional dimension of the aquifer. Default:2.0
lat_ext (
float
, optional) – Lateral extend of the aquifer. Default:1.0
rate (
float
, optional) – Pumpingrate at the well. Default: -1e-4h_bound (
float
, optional) – Reference head at the outer boundary at infinity. Default:0.0
struc_grid (
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:True
- Returns
head – Array with all heads at the given radii and time-points.
- Return type
- Raises
ValueError – If
rad
is not positiv.ValueError – If
time
is negative.ValueError – If shape of
rad
andtime
differ in case ofstruc_grid
isTrue
.ValueError – If
conductivity
is not positiv.ValueError – If
storage
is not positiv.