No fission sites banked on processor 0

User Support
1

I have a fuel pin with 0.5cm radius and surrounds it with the nitrogen of 0.01cm. Then I have a cladding of 0.04cm. so in total 0.55cm of fuel rod radius. This surrounded by 15cm of water and the whole thing is in steel container of 0.25cm. So in total 15.25cm. All of them are z-cylindrical surface with fuel rod of 200cm height and the steel container of 220cm. I have the below files. I got an error “No fission sites banked on processor 0” Can anyone help? What I finally want id to create a hex lattice of the fuel rod. The code for that is commented in the geometry file. Please help.

plots.xml (177 Bytes)

settings.xml (346 Bytes)

2

geometry.xml (2.29 KB)

materials.xml (1.93 KB)

plots.xml (177 Bytes)

settings.xml (346 Bytes)

tallies.xml (336 Bytes)

3

Hi Sharif,

It looks like the problem in this model is that you have multiple surfaces that are defined to be the same. For example, surface 8, 11, and 14 are all z-planes at z=-100. You should only have one unique copy of a given surface. Another problem I noticed is that some of the cells are overlapping. If you run OpenMC in geometry debugging mode (‘openmc -g’ or ‘openmc --geometry-debug’), it will tell you that cells 3 and 5 are overlapping (as well as cells 2 and 5).

Best regards,
Paul