- grf(time, rad, storage, conductivity, dim=2, lat_ext=1.0, rate=- 0.0001, r_well=0.0, r_bound=inf, h_bound=0.0, struc_grid=True, lap_kwargs=None)¶
The general radial flow (GRF) model for a pumping test.
This solution was presented in [Barker88].
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) – Fractional dimension of the aquifer. Default:
float, optional) – Lateral extend of the aquifer. Default:
float, optional) – Pumpingrate at the well. Default: -1e-4
float, optional) – Inner radius of the pumping-well. Default:
float, optional) – Radius of the outer boundary 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
Barker, J. ‘’A generalized radial flow model for hydraulic tests in fractured rock.’’, Water Resources Research 24.10, 1796-1804, 1988