Search found 4 matches

by Sebastian Raub
Mon Nov 08, 2010 10:38 am
Forum: Compiling and installing Serpent
Topic: Installing Endfb-7 libraries
Replies: 1
Views: 5440

Installing Endfb-7 libraries

Hi, I'm trying to produce Serpent Output with 6 precursor-groups (compatibility issiues with the follow-up Software). To this end I unzipped the the provided Endf7-archive in my Home-folder (/home/sebastian/xs) and ran the provided script xsdirconvert.pl . This keeps telling me: 'ACE file "/xs/endfb...
by Sebastian Raub
Wed Sep 15, 2010 8:35 pm
Forum: Users
Topic: Normalization Issues
Replies: 1
Views: 1586

Normalization Issues

In the wake of trying (and failing) to compute reactor poison yields I noticed a too high Total_Flux = 6.15624E+16 in my serpent calculation. My colleagues suggested this might be due to normalization issues. Background: I'm suppossed to simulate an BWR-Assembly, infinite in z-direction, with reflec...
by Sebastian Raub
Wed Sep 15, 2010 8:24 pm
Forum: Users
Topic: Effective Yield of Reactor Poisons
Replies: 3
Views: 1955

Re: Effective Yield of Reactor Poisons

Jaakko, Could the problem be that you are calculating the reaction rates over the entire assembly (du 0)? I think detectors CaptXe and TotFluxAss should be limited to the fuel region only (dm "fuel"). Maybe, and I'm running that computation again, but even so this should have no influence on the Iod...
by Sebastian Raub
Wed Sep 15, 2010 1:24 am
Forum: Users
Topic: Effective Yield of Reactor Poisons
Replies: 3
Views: 1955

Effective Yield of Reactor Poisons

Hi everyone, I am suppossed to compute the effective yield of several reactor poisons (Id-135, Xe-135, Pm-149) from the output of a Serpent-BurnUp Calculation, to this end I used: dN(Id)/dt = y(Id) * Sigma_f * Flux - lambda(Id) * N(Id) where: N(Id) is the atomic density of Iodine Sigma_f is the macr...