Search found 77 matches

by Andrei Fokau
Wed Sep 01, 2010 8:47 pm
Forum: Development
Topic: Nests with multiple surface parameters
Replies: 1
Views: 4533

Nests with multiple surface parameters

In case of nested prisms, one could simplify input by using nest with multiple surface parameters: nestn 1 cylprism fuel 0 0 # coordinates 0.9 # radius -20 20 # z1 z2 void 0 0 1.0 -22 21 clad 0 0 1.5 -23 22 coolant Since, the surfaces with explicit center are typically located in (0,0), the followin...
by Andrei Fokau
Wed Sep 01, 2010 8:09 pm
Forum: Development
Topic: Adding new surface types
Replies: 6
Views: 8845

CYLPRISM, PADPRISM

Despite that pins (nests) are great for defining fuel elements, sometimes one needs to model the elements with more details. For such cases, it would be nice to have CYLPRISM surface type, which is a cylinder between z1 and z2. Additionally, it would also be great to have tube as PAD with no angles ...
by Andrei Fokau
Wed Sep 01, 2010 5:52 pm
Forum: Users
Topic: Material mixer for Serpent and MCNP
Replies: 0
Views: 1595

Material mixer for Serpent and MCNP

In order to simplify material card definition for Serpent and MCNP, I wrote a material mixer, which one can try at http://materialmixer.heroku.com. I will add some help here later. Note, that at the moment the number of mixes is temporarily limited due to some problems of the webhoster. Please, let ...
by Andrei Fokau
Wed Sep 01, 2010 5:41 pm
Forum: Development
Topic: Material mixes
Replies: 2
Views: 4781

Material mixes

Comparing to MCNP, Serpent saves a lot of time in preparing input, computing, and output processing. The simplicity of geometry definition in Serpent is invaluable for reactor modelling (even being limited). However, there are still few difficulties directly inherited from MCNP, which can also be im...
by Andrei Fokau
Fri Aug 27, 2010 3:19 pm
Forum: Development
Topic: Shorter definition of infinite cells
Replies: 0
Views: 3838

Shorter definition of infinite cells

Infinite cells (or cells inside the infinite surface INF) are used for various purposes, e.g. for detector definition or group constant generation: pin 1 fill 11 4.33500E-01 void 4.42000E-01 clad 5.02500E-01 cool surf 11 inf cell 11 11 fuel -11 set gcu 11 Considering the future " density variation c...
by Andrei Fokau
Fri Aug 27, 2010 2:15 pm
Forum: Development
Topic: Material density multiplier in cell card
Replies: 2
Views: 4832

Re: Material density multiplier in cell card

Sound's good. However, the delta-tracking method basically allows also a continuous change in material density, which is something I've wanted to do for a long time. So it might be a good idea to combine these features into something more general. How about a "density variation card", which would t...
by Andrei Fokau
Fri Aug 27, 2010 1:46 pm
Forum: Development
Topic: Material density multiplier in cell card
Replies: 2
Views: 4832

Material density multiplier in cell card

Jaakko, Sometimes there is a need in a more convenient way to vary density in cells with the same material - one of the most common examples is a BWR fuel pin. Since materials may take quite a lot of memory resources (and input lines), it would be nice to change material density in a cell by using a...
by Andrei Fokau
Thu Aug 26, 2010 1:21 pm
Forum: Users
Topic: Universe rotation
Replies: 3
Views: 2089

Re: Universe rotation

Anikin, the feature is now actively developed by Jaakko (see http://ttuki.vtt.fi/serpent/viewtopic.php?f=9&t=71), so perhaps it will be working correctly with the next update.
by Andrei Fokau
Wed Aug 25, 2010 1:41 pm
Forum: Users
Topic: Interactive plotter for Serpent
Replies: 12
Views: 4750

Re: Interactive plotter for Serpent

Peter Wolniewicz wrote:Hi! Could you explain how to run this? I have no clue what ruby is :)
It is a cool programming language: http://www.ruby-lang.org
Please, use RVM to install it: http://rvm.beginrescueend.com
by Andrei Fokau
Wed Aug 25, 2010 12:03 am
Forum: Development
Topic: Heat deposit in non-fissile materials
Replies: 5
Views: 7148

Re: Heat deposit in non-fissile materials

There are recent papers on this subject by A. Hogenbirk et al.: An easy way to perform a radiation damage calculation in a complicated geometry http://dx.doi.org/10.1016/j.fusengdes.2008.06.061 A novel approach towards DPA calculations http://dx.doi.org/10.1142/9789814271110_0078 Usually approximati...