- neuman2004_steady(rad, r_ref, trans_gmean, var, len_scale, rate=-0.0001, h_ref=0.0)[source]
The steady solution for the apparent transmissivity from [Neuman2004].
This solution is build on the apparent transmissivity from Neuman 1994, which represents a mean drawdown in an ensemble of pumping tests in heterogeneous transmissivity fields following an exponential covariance. Presented in [Neuman2004].
numpy.ndarray) – Array with all radii where the function should be evaluated
float) – Radius of the reference head.
float) – Geometric-mean transmissivity.
float) – Variance of log-transmissivity.
float) – Correlation-length of log-transmissivity.
float, optional) – Pumpingrate at the well. Default: -1e-4
float, optional) – Reference head at the reference-radius r_ref. Default:
head – Array with all heads at the given radii.
- Return type
Neuman, Shlomo P., Alberto Guadagnini, and Monica Riva. ‘’Type-curve estimation of statistical heterogeneity.’’ Water resources research 40.4, 2004