Plot Error: Return code 2

Running and Runtime Errors
1

Dear Fluka/Flair experts,
I am a new user of the Fluka/Flair software. I am trying to follow the tutorial posted on this page, Official flair site. But, I get stuck on step 5 for “Geometry Plotting”.
The error shows as “Plot Error: Return code 2”. Then, I tried to look at the files, .err. .log,.out.
However, a message from the ".err" file shows as “Region n.1 (BLKBODY) has no assigned material, run stopped”. While from the “*.log” is “STOP NO MATERIAL ASSIGNED TO A REGION, STOP STOP: FLUKA ABORTED”.
So, from these error messages, how do I fix it?
Thank you so much in advance for your suggestions.

3

Dear Jittapan Ineead,
Thank you for your question. I may double check it if you will share your .flair file here, but most probably you have to set the material for your BLKBODY region using ASSIGN card as for other regions. Theirs is a type of black body material used to terminate all particles and avoid simulation of their propagation to infinity.

Kind regards,
Illia

4

Dear Illia,
Thank you so much for your suggestions. I returned to recheck my input file and tried to fix it. I finally found my mistake. The point is, I need to assign the materials for the regions, “BLKBODY” and “VOID”, also, not only for the regions, “WATERCNT” and “TARGET”, i.e.,

  • Mat: BLCKHOLE Reg: BLKBODY
  • Mat: VACUUM Reg: VOID
    Again, I thank you so much for your suggestions.

Kind regards,
Jack :wink:

6

Dear Jack, Yes, exactly!
Glad that it works for you.

Kind regards,
Illia