ERROR: A particle is outside lattice 101 but the lattice has no defined outer universe.

User Support
1

Dear all,

I notice this error in an draft eigenvalue calculation of a Fuel assembly model when I use a quite large number of particles per batch e.g. 5E6 particles per batch.

I tried 3 or 4 different combinations of cells and universes that compose the desired model but the error is always there; however in different batches.
I noticed that if you increase, for example, the particles per batch by one you can probably overcome the problem, but in the most configurations it’s there.

Is there any obvious mistake in my attached input files? (These files concern one of the configurations that I tried)

Best regards,
Antonios

settings.xml (489 Bytes)

geometry.xml (4.04 KB)

materials.xml (1.09 KB)

2

Hye as the error states and is obvious from your input, you haven't modeled an outer universe for the space outside the defined lattice. You should use an infinite water universe in the outer tag of lattices you are defining. That should solve the problem :blush: