Function to calculate the theis well function for values of \(u > 1\)
theis_well_function_large(u)
| u | Dimensionless \(u\) variable defined as: $$ u=\frac{r^{2}S}{4Tt} $$ where \(r\) is the distance between the pumping and observation well in m, \(S\) is the storage coefficient (dimensionless), \(T\) is the Transmisivity in m2/s and \(t\) is the time in s |
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This function returns the value of the dimensionless drawdown
Theis, C. The relation between the lowering of the piezometric surface and the rate and duration of discharge of a well using groundwater storage. Transactions of the American Geophysical Union, 1935, 2, 519-524
Other theis functions: exponential_integral,
theis_WF_LT_dlogt,
theis_WF_LT,
theis_calculate_parameters,
theis_solution_dlogt,
theis_solution_initial,
theis_solution,
theis_well_function_small,
theis_well_function