- ext_thiem_tpl_3d(rad, r_ref, cond_gmean, len_scale, hurst, var=None, c=1.0, anis=1, lat_ext=1.0, rate=- 0.0001, h_ref=0.0, K_well='KH', prop=1.6)¶
The extended Theis solution for truncated power-law fields in 3D.
The extended Theis solution for transient flow under a pumping condition in a confined aquifer with anisotropy in 3D. The type curve is describing the effective drawdown in a 3-dimensional statistical framework, where the conductivity distribution is following a log-normal distribution with a truncated power-law correlation function build on superposition of gaussian modes.
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 of the aquifer.
float) – Geometric-mean conductivity.
float) – Corralation-length of log-conductivity.
float) – Hurst coefficient of the TPL model. Should be in (0, 1).
float, optional) – Intensity of variation in the TPL model. Is overwritten if var is given. Default:
float, optional) – Anisotropy-ratio of the vertical and horizontal corralation-lengths. Default: 1.0
float, optional) – Lateral extend of the aquifer (thickness). Default:
float, optional) – Pumpingrate at the well. Default: -1e-4
float, optional) – 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:
float, optional) – Explicit conductivity value at the well. One can choose between the harmonic mean (
"KH"), the arithmetic mean (
"KA") or an arbitrary float value. Default:
float, optional) – Proportionality factor used within the upscaling procedure. Default:
float, optional) – Relative error for the farfield transmissivity for calculating the cutoff-point of the solution. 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:
int, optional) – Since the solution is calculated by setting the transmissivity to local constant values, one needs to specify the number of partitions of the transmissivity. Default:
head – Array with all heads at the given radii and time-points.
- Return type
If you want to use cartesian coordiantes, just use the formula
r = sqrt(x**2 + y**2)