general_radial_flow_solution_initial

This function calculate the initial parameters

general_radial_flow_solution_initial(ptest)

Arguments

ptest	A pumping_test object

Value

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

• n: Flow dimension (n=2)

References

Barker, J. A. A generalized radial flow model for hydraulic tests in fractured rock Water Resources Research, 1988, 24, 1796-1804.

See also

Other general_radial_flow functions: general_radial_flow_WF_LT, general_radial_flow_calculate_parameters, general_radial_flow_solution_dlogt, general_radial_flow_solution, general_radial_flow_well_function

Examples

data("general_radial_flow1")
ptest.grf1 <- pumping_test("Well1", Q= 0.02322, r = 26.2, t = general_radial_flow1$t,
                           s = general_radial_flow1$s)
par <- list(rw = 0.1, rc = 0.1, rd = 1)
ptest.grf1$additional_parameters <- par
sol0 <-  general_radial_flow_solution_initial(ptest.grf1)
print(sol0)
#> $a
#> [1] 0.8005001
#> 
#> $t0
#> [1] 0.0001306415
#> 
#> $n
#> [1] 2
#>