cycamore reactor archetype issue with fractional assem_size

[Daniel Wojtaszek]

I've noticed an odd behavior in the reactor archetype during the discharge of fuel from the reactor.  When the assem_size parameter is fractional, all but one assembly are transferred out of the spent fuel buffer to a facility that has infinite space. The assembly that got left behind in the spent fuel buffer gets transferred out during the next time-step. When the assem_size parameter is integer-valued, all spent fuel gets transferred to the receiving facility during the fuel discharge time-step.

I can't seem to find the version of cycamore that I'm currently using.  The latest entry in git log says:

commit 3039855ca2c045e860c910ec583586483b53a23f
Merge: faa042a 144ca98
Author: Jordan Stomps <sto...@wisc.edu>
Date:   Tue Jan 14 11:47:27 2020 -0600

Can someone check if they can replicate this odd behavior, if there is a newer version of cycamore where this issue has been fixed?

Cheers.

Dan

[Daniel Wojtaszek]

UPDATE: The issue is not with fractional assembly mass, but with the number of assemblies.  My original model has 660 assemblies in the core, and 220 assemblies per batch.  If I reduce these numbers to 66 and 22, respectively, while maintaining assembly mass of 7.7 kg then the fuel discharge behaves as expected with all assemblies being transferred out of the spent fuel buffer.

[Daniel Wojtaszek]

ANOTHER UPDATE: The odd behavior occurs when there are more than 132 assemblies_per_batch.

[Baptiste MOUGINOT (BaM)]

Hi Dan, 

Could you share an input file that reproduce this ?

Thank you 

Baptiste

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[Baptiste MOUGINOT (BaM)]

Thank you,

I’ll try to take a look soon !

Baptiste

On May 28, 2021, at 13:15, Wojtaszek, Daniel <daniel.w...@cnl.ca> wrote:

UNRESTRICTED / ILLIMITÉE

Hi Baptiste.  Here is an input file that you can run that produces the issue.

 

Cheers.

 

Dan

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<test2.xml>

[Wojtaszek, Daniel]

UNRESTRICTED / ILLIMITÉE

Drat!  There is another archetype that I forgot to change: the storage.  Here is a file that should work.

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