Search found 505 matches

by Ana Jambrina
Sat Sep 25, 2021 12:22 pm
Forum: Users
Topic: Fatal error in function DetectorOutput
Replies: 1
Views: 15

Re: Fatal error in function DetectorOutput

Could you describe in more detail the input/calculation/error output? Or post here the input? Which Serpent version are you running? Note: e.g., you can simply place a mesh detector discretising the axial direction to obtain flux estimates at the listed positions on top of whatever defined (spatial)...
by Ana Jambrina
Fri Sep 24, 2021 2:17 pm
Forum: Bugs, problems, questions & feeback
Topic: Fatal error in function SurfaceNormal: Unsupported surface type 12
Replies: 3
Views: 21

Re: Fatal error in function SurfaceNormal: Unsupported surface type 12

If the input/calculation triggers that error, the 'CUBOID' surface type (15) might not work either. - Which Serpent version are you running?
Note: you can take a look at the routine 'surfacenormal.c' and check the surface's types where the normal vector is evaluated.
by Ana Jambrina
Fri Sep 24, 2021 11:50 am
Forum: Bugs, problems, questions & feeback
Topic: Fatal error in function SurfaceNormal: Unsupported surface type 12
Replies: 3
Views: 21

Re: Fatal error in function SurfaceNormal: Unsupported surface type 12

Routine 'surfacenormal.c' evaluates the normal vector for a given surface at (x,y,z). Currently, it doesn't include all surfaces available in Serpent (for multiple reasons). Surface type 12 corresponds with the 'CUBE' type definition. Meaning, you have a surface defined as a 'CUBE' type and, Serpent...
by Ana Jambrina
Tue Sep 21, 2021 6:22 pm
Forum: Users
Topic: flux calculation
Replies: 3
Views: 69

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: 69

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: 53

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: 53

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: 3765

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: 59

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: 659

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 ...