User Forum of Software BASEMENT

nicolagroff

User

Registered: 2017-08-07

Posts: 10

No input Discharge

Hi,

We have some problems with running the initial condition.

The mesh is written correctly, but when we start the simulation, it ends very quicky.
If we control the results, the discharge in the input Boundary condition is zero and there is no flux in the domain.

We attach the input files

https://www.dropbox.com/s/t186zf0v2mcqf … z.zip?dl=0

Thanks

Nicola

NumericalSam

User

From: Switzerland

Registered: 2022-04-01

Posts: 14

Re: No input Discharge

I just looked into it with v3.2, seems I'm getting results in under a second too..
Two points:
- Your boundary SEZ_IN is defined with the wrong direction, upstream_direction should be "left"
- The mesh seems to have multiple individual nodes with no elements touching, especially near the SEZ_IN boundary. I deleted them in a copy of the mesh and changed the mesh header to one material index per element, added the mesh name. Still not working.

However, I found some strange behaviour of the mesh when trying to move mesh nodes in JANET.

I'd suggest checking the mesh in detail, the model as is seems ok to me.

As a last resort: use sources as input. Not as accurate, but more stable and work almost everytime.