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ERROR: Numerical method failed on all combinations of convergence parameters
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Topic: ERROR: Numerical method failed on all combinations of convergence parameters (Read 1305 times)
andyql
Contributor
Posts: 2
ERROR: Numerical method failed on all combinations of convergence parameters
«
on:
17/05/23 04:32 »
hello, I'm trying to run a template with phreeqc, but I'm getting this error: ERROR: Numerical method failed on all combinations of convergence parameters, cell/soln/mix 1.
not sure what is the issue, here is the error output:
SOLUTION_RAW 1
-temp 100
-pressure 1
-potential 0
-total_h 111.0199097274
-total_o 55.515392259472
-cb 0.0001610658469348
-density 0.95837940139191
-totals
C(4) 6.8424205425676e-05
Cl 0.00073601424034852
Na 0.00081721534164311
O(0) 0.0052658559723307
-pH 4.1093763816428
-pe 14
-mu 0.00081740311342841
-ah2o 0.99992226406847
-mass_water 1
-soln_vol 1.0435673277967
-total_alkalinity 6.9382773428519e-05
-activities
Alkalinity -11.791345675074
C(4) -11.791345675074
Cl -3.1606827598409
E -14
H(0) -39.44663977085
Na -3.1040926089278
O(0) -2.5795610192223
-gammas
CO3-2 -0.06586838301126
Cl- -0.016416548492049
ClO4- -0.0164312783792
H+ -0.016362057084756
H2O-0.01 -1.6450751448853e-06
HCO3- -0.016450751448853
Na(CO3)- -0.016450751448853
Na+ -0.016429043763174
OH- -0.01641806284093
GAS_PHASE_RAW 2
# GAS_PHASE_MODIFY candidate identifiers #
-type 1
-total_p 1
-volume 1
-component CO2(g)
# GAS_PHASE_MODIFY candidate identifiers #
-moles 0.43408664046987
# GAS_PHASE_MODIFY candidate identifiers with new_def=true #
-p_read 0
# GasComp workspace variables #
-initial_moles 0
-p 0
-phi 0
-f 0
-component H2O(g)
# GAS_PHASE_MODIFY candidate identifiers #
-moles 5.6943618235537
# GAS_PHASE_MODIFY candidate identifiers with new_def=true #
-p_read 0
# GasComp workspace variables #
-initial_moles 0
-p 0
-phi 0
-f 0
-component H2S(g)
# GAS_PHASE_MODIFY candidate identifiers #
-moles 0
# GAS_PHASE_MODIFY candidate identifiers with new_def=true #
-p_read 0
# GasComp workspace variables #
-initial_moles 0
-p 0
-phi 0
-f 0
-component N2(g)
# GAS_PHASE_MODIFY candidate identifiers #
-moles 106.05420004798
# GAS_PHASE_MODIFY candidate identifiers with new_def=true #
-p_read 0
# GasComp workspace variables #
-initial_moles 0
-p 0
-phi 0
-f 0
-component NH3(g)
# GAS_PHASE_MODIFY candidate identifiers #
-moles 0
# GAS_PHASE_MODIFY candidate identifiers with new_def=true #
-p_read 0
# GasComp workspace variables #
-initial_moles 0
-p 0
-phi 0
-f 0
-component O2(g)
# GAS_PHASE_MODIFY candidate identifiers #
-moles 28.516552441627
# GAS_PHASE_MODIFY candidate identifiers with new_def=true #
-p_read 0
# GasComp workspace variables #
-initial_moles 0
-p 0
-phi 0
-f 0
# GAS_PHASE_MODIFY candidate identifiers with new_def=true #
-new_def 0
-solution_equilibria 0
-n_solution -999
-temperature 303.15
# GasPhase workspace variables #
-total_moles 0
-v_m 0
-pr_in 1
-totals
thanks very much!
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dlparkhurst
Global Moderator
Posts: 4037
Re: ERROR: Numerical method failed on all combinations of convergence parameters
«
Reply #1 on:
17/05/23 06:37 »
Looks like you are trying to put 100 moles of N2(g) in 1 liter of head space. I increased the head space to 10 and equilibrated with the solution to yield a pressure of 400 atm. So, I think 1 L would be something like 4000 atm, which is outside the range of PHREEQC calculations.
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andyql
Contributor
Posts: 2
Re: ERROR: Numerical method failed on all combinations of convergence parameters
«
Reply #2 on:
17/05/23 07:30 »
thanks very much! it works now!
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ERROR: Numerical method failed on all combinations of convergence parameters