When I am trying to run simulations of water evaporation, reaction of groundwater and mineral phase (among others) I keep getting this error message:
N-R didn't converge after 999 its., maximum residual = 1, Xi = 0.0000
I tried to make the simulation as simple as possible, but the software still indicate errors.
the script is as following:
> data = "C:\Program Files\Gwb\Gtdata\thermo.dat" verify
> time start = 0 day, end = 1 yr
> length = 20 cm
> left = inlet
> right = outlet
> Nx = 20
> discharge = 5 m/yr
> porosity = .3
> scope = initial
> H2O = 1 free kg
> Na+ = 0 mg/kg
> Mg++ = 0 mg/kg
> Ca++ = 0 mg/kg
> K+ = 0 mg/kg
> balance on Cl-
> Cl- = 0 mg/kg
> SO4-- = 0 mg/kg
> HCO3- = 0 mg/kg
> pH = 7
> scope = inlet
> H2O = 1 free kg
> Na+ = 1585 mg/kg
> Mg++ = 176.5 mg/kg
> Ca++ = 50 mg/kg
> K+ = 46 mg/kg
> balance on Cl-
> Cl- = 2300 mg/kg
> SO4-- = 320 mg/kg
> HCO3- = 14.2 mg/kg
> pH = 8.2
> TDS = 45000
> react -3e3 kg/m3/yr of H2O
