Search found 74 matches

by Antti Rintala
Fri Jul 02, 2021 1:22 pm
Forum: Users
Topic: burnup calculation problem
Replies: 19
Views: 2863

Re: burnup calculation problem

Regardin the TTA in decay calculations, you could also try using SSD in set bumode, of course remembering that enough substeps should be taken or the CRAM order to be high enough for the results to be "correct" (https://doi.org/10.13182/NSE15-67).
by Antti Rintala
Mon Jun 28, 2021 3:03 pm
Forum: Bugs, problems, questions & feeback
Topic: Memory allocation failed in burnup restart
Replies: 9
Views: 418

Re: Memory allocation failed in burnup restart

I'd say setting STEP to 2 in set depout should also work.
by Antti Rintala
Thu Jun 24, 2021 12:43 pm
Forum: Users
Topic: overlap in geometry
Replies: 4
Views: 253

Re: overlap in geometry

Not knowing your exact model it is difficult to give exact answers. Basically, if you have defined that your spheres are in some universe surrounded by surf S (for example cell sphere sphere_universe sphere_material -S), then just add S to the surface listing of the base universe cell, thus defining...
by Antti Rintala
Thu Jun 24, 2021 10:31 am
Forum: Users
Topic: overlap in geometry
Replies: 4
Views: 253

Re: overlap in geometry

I suggest you for example exclude the regions of the spheres from the base geometry.
by Antti Rintala
Mon Jun 14, 2021 3:37 pm
Forum: Methods
Topic: Change power density in automated burnup sequence
Replies: 15
Views: 858

Re: Change power density in automated burnup sequence

You can achieve that by calculating decay steps with dep decstep restarting from a burnup calculation at the correct burnup.
by Antti Rintala
Wed Jun 09, 2021 7:29 am
Forum: Bugs, problems, questions & feeback
Topic: Is debugging possible?
Replies: 4
Views: 249

Re: Is debugging possible?

Running Serpent natively on Windows (e.g. Visual Studio) will require some manual labor for finding suitable replacements for some libraries or functions found on Linux machines. Therefore it will be easier to perform the debugging with an IDE on a Linux.
by Antti Rintala
Wed May 05, 2021 9:54 am
Forum: Users
Topic: Scattering Order
Replies: 4
Views: 314

Re: Scattering Order

What do you mean exactly? The Serpent output is just a list of values, and during post-processing you can manipulate the order of the values as you like. The reshape command is an example how to obtain a matrix of the scattering values. It depends on the final usage whether this matrix is transposed...
by Antti Rintala
Wed May 05, 2021 9:39 am
Forum: Users
Topic: Scattering Order
Replies: 4
Views: 314

Re: Scattering Order

Your quotation and proposed correction are the same definition. You are just writing \Sigma_{g, g'} as Sigma(g',g).
by Antti Rintala
Tue Apr 20, 2021 7:42 am
Forum: Users
Topic: Total microscopic scattering matrix for selected isotopes
Replies: 4
Views: 350

Re: Total microscopic scattering matrix for selected isotopes

Microscopic scattering cross sections are not currently calculated by Serpent. This would require some additional functionality for sampling the scattering reactions.

For all materials in the set mdep card, the material volumes have to be defined.
by Antti Rintala
Fri Mar 19, 2021 8:53 am
Forum: Users
Topic: Micro / macro group structure effects
Replies: 6
Views: 598

Re: Micro / macro group structure effects

Replicating the Serpent results with a nodal program depends a lot (for example) on what kind of model you are trying to model and how, and what results of the Serpent group constant output you are using. Without any details, there is not much to say on this matter.