R/hantush_jacob_utilities.R
hantush_jacob_solution_initial.RdFunction to calculate the initial parameters of the Hantush-Jacob model
hantush_jacob_solution_initial(ptest)
| ptest | A pumping_test object |
|---|
A list with
a: Slope of the straight line fitted to the drawdown data using the Cooper-Jacob approach
t0: Intercept of the straight line fitted to the drawdown data using the Cooper-Jacob approach
lambda: Leakage factor defined as $$\lambda = \sqrt{\frac{b^{'}T}{k_{h}^{'}}} $$
where \(b^{'}\) and \(k_{h}^{'}\) are the thickness and the vertical hydraulic conductivity of the aquitard, and \(T\) is the transmissivity of the underlying aquifer.
Hantush, M. S. Flow to wells in aquifers separated by a semipervious layer. Journal of Geophysical Research, 1967, 72, 1709.
Other hantush_jacob functions: hantush_jacob_WF_LT_dlogt,
hantush_jacob_WF_LT,
hantush_jacob_calculate_parameters,
hantush_jacob_solution_dlogt,
hantush_jacob_solution,
hantush_jacob_well_function
data(hantush_jacob) ptest <- pumping_test('Well1', Q = 6.309e-3, r = 3.048, t=hantush_jacob$t, s = hantush_jacob$s) sol0 <- hantush_jacob_solution_initial(ptest) print(sol0)#> $a #> [1] 7.82978 #> #> $t0 #> [1] 2.703075 #> #> $lambda #> [1] 49.91162 #>