Search found 502 matches

by Ana Jambrina
Tue Sep 21, 2021 6:22 pm
Forum: Users
Topic: flux calculation
Replies: 3
Views: 60

Re: flux calculation

Yes, instead of post-processing the estimates, you can use the volume detector entry ‘ dv ’. However, keep in mind that such option is only valid for constant bin-volume, e.g. not applicable for curvilinear mesh detectors where the division is based on equal radii, not equal volume. Note: the comman...
by Ana Jambrina
Mon Sep 20, 2021 7:24 pm
Forum: Users
Topic: flux calculation
Replies: 3
Views: 60

Re: flux calculation

The detector gives you the flux integrated over space/energy/direction (and time). To obtain the neutron averaged-flux [n/cm^2 s] you should divide by bin-volume corresponding to the integration spatial-domain: determined by the material detector ‘ dm ’ fuelPIN1/fuelPIN2/fuelPIN3 and refined and dis...
by Ana Jambrina
Thu Sep 16, 2021 3:21 pm
Forum: Methods
Topic: Calculate the scattering matrix using detectors
Replies: 3
Views: 51

Re: Calculate the scattering matrix using detectors

Here, some useful references in spatial homogenisation and group constant generation: - Overview of methodology for spatial homogenization in the Serpent 2 Monte Carlo code - Tutorial. Part 6: Generating a set of group constants for a fuel assembly - Practicalities of group constant generation metho...
by Ana Jambrina
Thu Sep 16, 2021 2:22 pm
Forum: Methods
Topic: Calculate the scattering matrix using detectors
Replies: 3
Views: 51

Re: Calculate the scattering matrix using detectors

Why don't you check the group constant generation option, 'set gcu'?
by Ana Jambrina
Wed Sep 15, 2021 1:08 pm
Forum: Input
Topic: Fixed buckling
Replies: 3
Views: 3757

Re: Fixed buckling

"This option ['set fum'] does not affect the flux spectrum used during burnup calculations".
by Ana Jambrina
Wed Sep 15, 2021 12:01 pm
Forum: Users
Topic: Variables in burnup calculations
Replies: 1
Views: 55

Re: Variables in burnup calculations

There is no programmer's manual or something similar describing the variables/structures/etc. You can track them down to understand their meaning and role within the code.
by Ana Jambrina
Tue Sep 14, 2021 9:06 pm
Forum: Users
Topic: Pebbles motion
Replies: 11
Views: 648

Re: Pebbles motion

Anything else than providing Serpent with some sort of capability to drive the pebbles wouldn't make sense in terms of modifying the source in this case. The changes should come from upstream (data structure). If you know how the restart file is written, meaning the structure and content, you could ...
by Ana Jambrina
Tue Sep 14, 2021 9:47 am
Forum: Users
Topic: Pebbles motion
Replies: 11
Views: 648

Re: Pebbles motion

From your description, you, basically, are shuffling the pebbles by sending those to the outside core region. Serpent will continue depleting the outside-core pebbles accordingly to the power setup and flux at the given region. In that sense, if the flux is zero or near to, the behaviour would be co...
by Ana Jambrina
Tue Sep 07, 2021 9:12 pm
Forum: Users
Topic: Missing k_eff and entropy in history file
Replies: 3
Views: 555

Re: Missing k_eff and entropy in history file

Check the history output file '_his[n].m' description at History output.
by Ana Jambrina
Fri Sep 03, 2021 4:25 pm
Forum: Users
Topic: Variance reduction in excore detector , outside of source
Replies: 1
Views: 74

Re: Variance reduction in excore detector , outside of source

Basically, the error message indicates that the point is outside the defined region. Check how did you define the mesh for the response matrix solver. You might want to check the detector flagging option, see 'dfl'.