Search found 73 matches

by Yousef1986
Thu Dec 22, 2016 1:54 pm
Forum: Users
Topic: Fatal error in function MatPtr
Replies: 6
Views: 4117

Re: Fatal error in function MatPtr

Thank you Jaakko. What about pin power, I cannot access this info. and I guess it's the problem of the level and currently processcpd.c assumes that level 1 is my pin level. If that is the problem, would it be a good idea to add a parameter to specify the pin level in "set cpd" card and keep a defau...
by Yousef1986
Wed Dec 14, 2016 1:38 pm
Forum: Users
Topic: Fatal error in function MatPtr
Replies: 6
Views: 4117

Fatal error in function MatPtr

Dear Jaakko, I have a 3D model of an SMR, and I am trying to do full core depletion. The problem is when trying to subdivide each fuel pin using the <div> card, Serpent produce: Calculating material volumes by Monte Carlo... Fatal error in function MatPtr: Unable to find divide zone Simulation abort...
by Yousef1986
Wed Dec 07, 2016 7:36 pm
Forum: Users
Topic: Full-core power distributions
Replies: 12
Views: 8183

Re: Full-core power distributions

Thanks Jaakko, it is as you said from bottom to top.
by Yousef1986
Sat Nov 26, 2016 8:53 pm
Forum: Users
Topic: Full-core power distributions
Replies: 12
Views: 8183

Re: Full-core power distributions

Dear Jaakko,

Regarding axial power distribution. Does Serpent print axial power from top to bottom?
For example, if I have 20 axial layers, does number "1" represent the top axial power and "20" is the bottom?

Thanks...
by Yousef1986
Tue Aug 16, 2016 5:44 pm
Forum: Bugs, problems, questions & feeback
Topic: Poisoning calculation by "set poi 1"
Replies: 14
Views: 15212

Re: Poisoning calculation by "set poi 1"

For the case with fixed Xe-135 concentration within each fuel composition (without depletion calculation): No, I still have no match. However, if I did not dilute Xe135 concentration over the whole FA, I get an exact match. For my original case (with depletion calculation): When I do not dilute Xe1...
by Yousef1986
Tue Aug 16, 2016 11:27 am
Forum: Bugs, problems, questions & feeback
Topic: Poisoning calculation by "set poi 1"
Replies: 14
Views: 15212

Re: Poisoning calculation by "set poi 1"

What do you mean by running a transport calculation with fixed Xe-135 concentration? How can I fix Xe-135 concentration in depletion calculation? By the way, I am running a depletion calculation for single FA with reflective b.c. for XS generations. The generated XS sets are intended to be used in P...
by Yousef1986
Mon Aug 15, 2016 2:50 pm
Forum: Bugs, problems, questions & feeback
Topic: Poisoning calculation by "set poi 1"
Replies: 14
Views: 15212

Re: Poisoning calculation by "set poi 1"

Dear Jaakko, I calculated XE135 microscopic absorption XS by the following: XE135 microscopic absorption XS = (XE135 macroscopic absorption XS)/(diluted XE135 atomic density) Where: XE135 macroscopic absorption XS is taken from "INF_XE135_MACRO_ABS" diluted XE135 atomic density = (XE135 atomic densi...
by Yousef1986
Mon Aug 15, 2016 2:38 pm
Forum: Users
Topic: Xenon calculation in SERPENT 2.1.26
Replies: 10
Views: 5530

Re: Xenon calculation in SERPENT 2.1.26

That what I was looking for how Serpent internally deals with the two cases.

Thanks
by Yousef1986
Fri Aug 12, 2016 3:26 pm
Forum: Input
Topic: Fission Yield Condensation
Replies: 2
Views: 6493

Re: Fission Yield Condensation

Could you elaborate more on how Serpent collapses fission yields into 2 groups (or any number of groups based on set nfg).

Is fission yields averaged over fuel spectrum only? As it was the case before (Serpent 2.1.25) with XE135 microsopic XS.
by Yousef1986
Fri Aug 12, 2016 11:52 am
Forum: Users
Topic: Xenon calculation in SERPENT 2.1.26
Replies: 10
Views: 5530

Re: Xenon calculation in SERPENT 2.1.26

Dear Jaakko, I performed the requested calculation with shorter burnup steps. In addition, I fixed the seed in both calculations (with and without 'set xenon' card). https://s9.postimg.org/wymtn0fvj/Untitled.png In addition, I noticed that the simulation time was faster in the case "with Xenon card"...