Search found 2282 matches

by Jaakko Leppänen
Thu Jul 09, 2020 10:38 am
Forum: Users
Topic: The Calculated Flux overestimates the power level of my system.
Replies: 6
Views: 225

Re: The Calculated Flux overestimates the power level of my system.

the dt 3 option is used to divide the detector result with the result of another detector, so you don't need this option to divide by volume.
by Jaakko Leppänen
Thu Jul 09, 2020 10:35 am
Forum: Users
Topic: Warning and burnout
Replies: 4
Views: 76

Re: Warning and burnout

The warning about the mvol card suggest that there is something wrong with how the material volumes are defined.

The fact that you get the first warning only after 3 weight-window iterations suggests that the particles do not reach that region of geometry that causes it until then.
by Jaakko Leppänen
Thu Jul 09, 2020 10:32 am
Forum: Users
Topic: Neutrons from radioactive decay source
Replies: 4
Views: 71

Re: Neutrons from radioactive decay source

Did you have the "burn 1" option in your material definition when reading the data from the binary file? The error message ("No materials corresponding to restart file") suggests that Serpent cannot find even the material name, which may be because the renames the materials when the burnup option is...
by Jaakko Leppänen
Thu Jul 09, 2020 10:04 am
Forum: Bugs, problems, questions & feeback
Topic: S(a,b) ENDF/BVII.1
Replies: 4
Views: 4854

Re: S(a,b) ENDF/BVII.1

This capability is in the development version and will be included in the next update.
by Jaakko Leppänen
Thu Jul 02, 2020 1:51 pm
Forum: Users
Topic: Neutrons from radioactive decay source
Replies: 4
Views: 71

Re: Neutrons from radioactive decay source

It maybe that this feature was not extended to neutrons in version 2.1.28. Try using the latest version (2.1.31).
by Jaakko Leppänen
Tue Jun 30, 2020 11:42 am
Forum: Users
Topic: Large volume of water
Replies: 5
Views: 201

Re: Large volume of water

Calculating analytical solutions for material volumes in a general 3D geometry is practically impossible. The fuel pin universes are truncated by the lattice cells, and even though it is possible to determine which material is located at position (x,y,z), it is not as straightforward to figure out w...
by Jaakko Leppänen
Tue Jun 30, 2020 11:34 am
Forum: Users
Topic: Question: I want to implement a boron curve in my burnup calculations
Replies: 8
Views: 100

Re: Question: I want to implement a boron curve in my burnup calculations

The iteration is applied separately for each step, so yes, each burnup step is calculated using critical boron concentration.
by Jaakko Leppänen
Mon Jun 29, 2020 4:44 pm
Forum: Users
Topic: Warning and burnout
Replies: 4
Views: 76

Re: Warning and burnout

The first warning is probably related to some error in the interaction data. Do you get this frequently, or is this more like random rare event? The warnings on material volumes are related to the use of depletion zone division. The -checkvolumes option produces a file where you can see the indexing...
by Jaakko Leppänen
Mon Jun 29, 2020 4:40 pm
Forum: Users
Topic: Question: I want to implement a boron curve in my burnup calculations
Replies: 8
Views: 100

Re: Question: I want to implement a boron curve in my burnup calculations

The iteration is applied for all steps separately. So your reactor will remain critical throughout the cycle.
by Jaakko Leppänen
Mon Jun 29, 2020 4:38 pm
Forum: Users
Topic: General questions
Replies: 5
Views: 218

Re: General questions

Could you post the geometry and detector definitions here?

Also, another option is to use the ADF functionality to get the partial currents.