No fission sites banked on MPI rank 0

Validation and Verification
1

Hi all. I’m new to OpenMC. I’m trying to run a depletion simulation every 30 days until I have modeled the problem over a 24-month cycle (EFPD). I got the error “No fission sites banked on MPI rank 0”.

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image1366×768 93.8 KB

I think it is because of the warning about density but I don’t know what to do. Could you all please help me to solve this?
This is my script. I have modeled SMR core with three types of fuel enrichment.
6.py (16.5 KB)

Thank you.
Yos.

2

I think this is due to incorrect volume set of fuel and BA. See Andrew’s comment here

fuel1.volume = math.pi * 0.39218 ** 2 * 230 * 232 * 32
...
fuel2.volume = math.pi * 0.39218 ** 2 * 230 * 264 * 16
...
fuel3.volume = math.pi * 0.39218 ** 2 * 230 * 264 * 9
...
solid.volume = math.pi * 0.39218 ** 2 * 230 * 32 * 32

Regards,
Pranto

3

Thank you @Pranto for your reply. Now, I understand how the problem is with the wrong volume set. Referring to the example you made.

fuel1.volume = math.pi * 0.39218 ** 2 * 230 * 232 * 32
…
fuel2.volume = math.pi * 0.39218 ** 2 * 230 * 264 * 16
…
fuel3.volume = math.pi * 0.39218 ** 2 * 230 * 264 * 9
…
solid.volume = math.pi * 0.39218 ** 2 * 230 * 32 * 32

Computing the volume of these is pi*(R)^2 * h(height) * the number of all the fuel rods*the number of assemblies in the core, isn’t it? Could you please clarify this?

Best regards,
Yos

4

Yep exactly @Yos

Regards
Pranto

5

Thank you very much @Pranto .