- ext_grf(time, rad, S_part, K_part, R_part, dim=2, lat_ext=1.0, rate=- 0.0001, h_bound=0.0, K_well=None, struc_grid=True, lap_kwargs=None)¶
The extended “General radial flow” model for transient flow.
The general radial flow (GRF) model by Barker introduces an arbitrary dimension for radial groundwater flow. We introduced the possibility to define radial dependet conductivity and storage values.
This solution is based on the grf model 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
numpy.ndarray) – Given storativity values for each disk
numpy.ndarray) – Given conductivity values for each disk
numpy.ndarray) – Given radii separating the disks (including r_well and r_bound).
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) – Reference head at the outer boundary R_part[-1]. Default:
float, optional) – Conductivity at the well. 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:
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