Tony,
Alf is correct, in nearly all cases poor convergence is nearly always
related to the data: aquifer not in equilibrium with the hydrocarbon
zone, negative fluid compressibilities, etc. If you can share your model
then I'll take a look. If not then if you send me the *.PRT, *.LOG and
*.DBG files I'll have a quick look to see if there is anything obvious
from these files.
Also are you getting?
|Time step 2, stepsize -nan days, at day 0.04/31, date = 01-Jan-2021
Error:
[/build/opm-simulators-4CUPDM/opm-simulators-2019.10-rfinal/opm/simulators/flow/BlackoilModelEbos.hpp:268]
NaN residual found!�[0m Problem: Solver convergence failure - Numerical
problem encountered Timestep chopped to -nan days|
||
Nobody responded to my GitHub issue question "How Many Hours in a -nan
Day? #2503 " - perhaps it was something of a "black-hole" to investigate
:-).
I don't' have a general solution to this, but I have resolve a few cases
of the above due to data inconsistencies.
Release 2020-04 is out, so perhaps you can try your model with the new
release.
||
OPM User
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