Search found 74 matches

by Antti Rintala
Thu Mar 18, 2021 8:44 am
Forum: Users
Topic: Micro / macro group structure effects
Replies: 6
Views: 670

Re: Micro / macro group structure effects

What did you exactly calculate with Serpent and how, and what did you calculate with the nodal program? And what was the problem with the results?
by Antti Rintala
Mon Mar 01, 2021 11:06 am
Forum: Development
Topic: 2.1.32 - More versatility to automated burnup sequence with casematrix input
Replies: 0
Views: 258

2.1.32 - More versatility to automated burnup sequence with casematrix input

In addition to the coef input card, which could be used to e.g. calculate group constants at multiple state points with single depletion history, Serpent now supports calculating multiple different histories given with branch cards and then e.g. calculate group constants at multiple state points for...
by Antti Rintala
Mon Mar 01, 2021 9:11 am
Forum: Development
Topic: 2.1.32 - New CRAM and predictor and predictor-corrector calculation features
Replies: 0
Views: 249

2.1.32 - New CRAM and predictor and predictor-corrector calculation features

With set bumode (https://serpent.vtt.fi/mediawiki/index.php/Input_syntax_manual#set_bumode) now IPF form of CRAM is possible to be used with orders 16 and 48. Additionally, if a new parameter SSD is nonzero, also decay calculations and/or low power burnup calculations are calculated with CRAM. The u...
by Antti Rintala
Mon Mar 01, 2021 9:04 am
Forum: Development
Topic: 2.1.32 - microscopic group constant calculation with set mdep
Replies: 0
Views: 268

2.1.32 - microscopic group constant calculation with set mdep

The methodology, fourth input option and the output was changed. Multiple set mdep cards per universe can be given. The outputs for different set mdep cards are given in XS_<uni>_<idx> tables, whre <idx> is the index of the set mdep card. In the microscopic cross section output file, fourth and fift...
by Antti Rintala
Mon Mar 01, 2021 8:52 am
Forum: Development
Topic: 2.1.32 - poison cross section calculation with set poi
Replies: 0
Views: 257

2.1.32 - poison cross section calculation with set poi

The methodology and third input option was changed. With also non-zero distribution of poison nuclides, now e.g. INF_XE135_MICRO_ABS should be equal to INF_XE135_MACRO_ABS*N_XE135, where N_XE135 is the nuclide density of XE135 smeared to the total universe volume. Old parameter VR is now VOL, which ...
by Antti Rintala
Mon Feb 22, 2021 2:11 pm
Forum: Users
Topic: Different diameters for pins
Replies: 7
Views: 707

Re: Different diameters for pins

I'd imagine that if you create such universes of fuel assemblies (and assign them to some other universe than the root one) and include those fuel assembly universes in a core level lattice, you don't have to worry about the global coordinates of the big pins, as the fuel assembly universes are cent...
by Antti Rintala
Mon Feb 22, 2021 11:01 am
Forum: Users
Topic: Different diameters for pins
Replies: 7
Views: 707

Re: Different diameters for pins

Basically have the small pins in lattice like (the numbers are random) lat pin_l 3 0 0 21 21 1.0 ...pins... then have the big pins like pin cyl1 ...materials... pin cyl2 ...materials... etc. the inner boundary of the assembly surface surf inner_s hexxc 0 0 10 and boundaring surfaces for the big pins...
by Antti Rintala
Mon Feb 22, 2021 8:39 am
Forum: Users
Topic: Different diameters for pins
Replies: 7
Views: 707

Re: Different diameters for pins

This geometry cannot be constructed using a single lattice card. One way could be to include the smaller pins in one lattice, then include the bigger pins without a lattice to the root universe inside those cylinders they are located at, and the pin lattice outside those surfaces and inside the asse...
by Antti Rintala
Tue Feb 09, 2021 4:42 pm
Forum: Compiling and installing Serpent
Topic: makefile error
Replies: 6
Views: 833

Re: makefile error

by Antti Rintala
Mon Feb 08, 2021 9:22 am
Forum: Compiling and installing Serpent
Topic: makefile error
Replies: 6
Views: 833

Re: makefile error

This problem is also already correctly fixed in the next Serpent release.