16 | | == Time evolution in a critical assembly |
17 | | [[https://youtu.be/sF1ucRQYNmA]] |
| 16 | [[Image(BMEOR_fissions_95e-5_1e-3s.png, 400px, title=Neutron fission distribution in the BME Training reactor calculated by GUARDYAN)]] |
| 17 | ''Figure 2.: BME Training Reactor Fission source distribution in 10^-3^ sec'' |
| 18 | |
| 19 | == Time evolution in a subcritical assembly |
| 20 | |
| 21 | |
| 22 | The subcritical model was a 30 cm radius water sphere with 61 UO,,2,, cylindrical fuel rods of 40 cm length, 1 cm radius spaced 1 cm apart from each other see Fig. 3.. Uranium was 4.7% enriched and fuel rod density was taken as 10.5g/cm^3^. |
| 23 | |
| 24 | [[Image(UOH2O_geometry.png, 400px, title=Geometry of the subcritical model)]] |
| 25 | \\ ''Figure 3.: Geometry of the subcritical model'' |
| 26 | |
| 27 | At time zero a point source emitted neutrons in the middle of the geometry. Afterwards the time evolution of the neutrons were followed. Results in terms of fission distribution along the cross secion of the geometry are shown in Fig.4 |
| 28 | |
| 29 | [[Image(UO_H2O_rods_16timestep_z-sum_cropped.png, 400px, title=Geometry of the subcritical model)]] |
| 30 | \\ ''Figure 4.: Geometry of the subcritical model'' |
| 31 | |
| 32 | Also a small video can be seen here: [[https://youtu.be/sF1ucRQYNmA]] |