Simulations crashing

[Marcin]

Hello,

I am running a buoyant gas mixing calculation in v.4.0.2

The mesh is tetrahedral

Whenever I run a calculation I have either a crash with an empty error file generated,
or the velocity pressure coupling diverges to infinity, pressure however remains.
Sometimes after 2-3 iterations, sometimes after 3000 iterations.

There are free inlet/outlet BCs at different elevations, which are expected to reverse flow direction after some time of simulation.

field minimum maximum set mean spatial mean
- -------------- -------------- -------------- -------------- --------------
v Velocity[X] inf -inf -nan nan
v Velocity[Y] inf -inf -nan nan
v Velocity[Z] inf -inf nan nan
v ǁVelocityǁ inf -inf nan nan
v Pressure 0.70281 963.03 126.32 132.59
v k inf -inf nan nan
v omega inf -inf nan nan
v TempK inf -inf nan nan
v co2conc inf -inf nan nan
v Density inf -inf nan nan
v LamVisc inf -inf nan nan
v TurbVisc inf -inf nan nan
v CourantNb inf -inf -nan -nan
v FourierNb inf -inf -nan -nan
v total_pressure 1.0101e+05 1.0218e+05 1.0134e+05 1.0128e+05
v SpecHeat inf -inf nan nan
v Dscal1 inf -inf nan nan
v ThermalCond inf -inf nan nan

Any ideas?
It is already a month since I am trying to fix it.

[Yvan Fournier]

Hello,

Did you check the "BPG" and "FAQ" sections in the Documentation part of the web-site ?

Could you otherwise provide details as recommended in the forum usage guidelines ?

Regards,

Yvan