Hello,
thank you Martin. Indeed, permeability values are ok. Anyway, as you
suggested, UMFPack makes the simulation work also for TPFA and MPFA.
Why does UMFPackBackend work while ILU0BiCGSTABBackend and AMGBackend
struggle in some situations?
Kind regards,
Lorenzo
On 23.04.2020 16:40, Martin Schneider wrote:
Dear Lorenzo,
did you check if all the permeability values are unequal to zero?
You could also use the direct solver UMFPack and see if the matrix is
singular.
Regards,
Martin
Am 23.04.20 um 12:22 schrieb lk:
Dear community,
I'm trying to run a 2D five spot test case with 1p2c model on
unstructured grid (like the one attached). More details are in the
source, but everything is very standard except the random
permeability which anyway does not create any problem.
My issue, is related to the fact that when I run with BOX scheme, the
simulation goes as expected but with MPFA and TPFA schemes, it raises
an error reported in the log file.
I see that running TPFA with unstructured grid may be not a good
idea, but I guess anyway it should work and MPFA as well.
Changing grid handlers (UGGRID, ALUGRID, YASP) doesn't help, as well,
linear solvers ...
Do I miss something?
Thank you,
Kind regards,
Lorenzo
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