anaflow.tools.coarse_graining.T_CG
- T_CG(rad, trans_gmean, var, len_scale, T_well=None, prop=1.6)[source]
The coarse-graining Transmissivity.
This solution was presented in ‘’Schneider & Attinger 2008’’[R3].
This functions gives an effective transmissivity for 2D pumpingtests in heterogenous aquifers, where the transmissivity is following a log-normal distribution and a gaussian correlation function.
- Parameters
rad (
numpy.ndarray
) – Array with all radii where the function should be evaluatedtrans_gmean (
float
) – Geometric-mean transmissivity.var (
float
) – Variance of log-transmissivity.len_scale (
float
) – Correlation-length of log-transmissivity.T_well (
float
, optional) – Explicit transmissivity value at the well. Harmonic mean by default.prop (
float
, optional) – Proportionality factor used within the upscaling procedure. Default:1.6
- Returns
T_CG – Array containing the effective transmissivity values.
- Return type
References
- R3
Schneider, C. and Attinger, S., ‘’Beyond thiem: A new method for interpreting large scale pumping tests in heterogeneous aquifers.’’ Water resources research, 44(4), 2008
Examples
>>> T_CG([1,2,3], 0.001, 1, 10, 2) array([0.00061831, 0.00064984, 0.00069236])