Changes between Version 23 and Version 24 of GuarDyan_Examples
- Timestamp:
- Sep 12, 2018, 8:46:44 AM (6 years ago)
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GuarDyan_Examples
v23 v24 17 17 ''Figure 2.: BME Training Reactor Fission source distribution in 10^-3^ sec'' 18 18 19 As a further illustration, an impulse point source was introduced to the BME Training Reactor at the middle of the geometry at critical state with initial energy 0.01 MeV, see Fig. 3.. First the fast source neutrons start populating the middle of the geometry (until about 10^-7^s). Afterwards the thermalized neutrons start building up the fission source and slowly the whole reactor will be populated by neutrons. The simulation video frame rate increases tenfold at 10^-7^s due to the vastly different time scale of the fast and the thermal processes. Note tat the whole video duration is within a single generation time. 20 21 [[Movie(https://www.youtube.com/watch?v=9TM3UYgvgl4&feature=youtu.be,style=width:320px; height:240px;)]] 22 23 ''Figure 3.: BME Training Reactor neutron density evolution as a response to an impulse point source'' 24 19 25 == Time evolution in a subcritical assembly 20 26 21 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^.27 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. 4.. Uranium was 4.7% enriched and fuel rod density was taken as 10.5g/cm^3^. 22 28 23 29 [[Image(UOH2O_geometry.png, 400px, title=Geometry of the subcritical model)]] 24 \\ ''Figure 3.: Geometry of the subcritical model''30 \\ ''Figure 4.: Geometry of the subcritical model'' 25 31 26 At time zero a point source emitted neutrons in the middle of the geometry with 10MeV energy. 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. 432 At time zero a point source emitted neutrons in the middle of the geometry with 10MeV energy. 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.5 27 33 28 34 ||[[Image(UO_H2O_rods_16timestep_z-sum_cropped.png, 400px, title=Geometry of the subcritical model)]] ||[[Movie(https://www.youtube.com/watch?v=sF1ucRQYNmA&feature=youtu.be,style=width:320px; height:240px;)]]|| 29 \\ ''Figure 4.: Time evolution of the fission source'' 35 \\ ''Figure 5.: Time evolution of the fission source'' 36 37 38 39 30 40 {{{ 31 41 #!comment Also a small video can be seen here: [[https://youtu.be/sF1ucRQYNmA]] … … 41 51 == VVER-440 a Geometry input check 42 52 43 For checking the memory requirements of realistic geometries, we have created the full model of a VVER-440 (similar to the ones operating at [http://www.atomeromu.hu/en/AboutUs/Lapok/1default.aspx PAKS NPP]) core including the pressure vessel. Some geometry cross sections can be found in Figures 5 and 6.53 For checking the memory requirements of realistic geometries, we have created the full model of a VVER-440 (similar to the ones operating at [http://www.atomeromu.hu/en/AboutUs/Lapok/1default.aspx PAKS NPP]) core including the pressure vessel. Some geometry cross sections can be found in Figures 6 and 7. 44 54 45 55 || [[Image(material_volume_transverse_5.jpg, 400px, title=VVER-440)]] \\''VVER-440 core cross section'' || || [[Image(material_volume_transverse_4_resize.jpg, 400px, title=VVER-440)]] \\''VVER-440 core cross section zoomed in'' || [[Image(material_volume_transverse_4_middle_crop.jpg, 400px, title=VVER-440)]] \\''VVER-440 core cross section zoomed in even more'' || 46 ''Figure 5.: VVER-440 geometries in GUARDYAN''56 ''Figure 6.: VVER-440 geometries in GUARDYAN'' 47 57 48 58 49 [[Image(material_volume_coronal_6.jpg, 400px, title=VVER-440)]] \\''Figure 5.: VVER-440 geometry in GUARDYAN''59 [[Image(material_volume_coronal_6.jpg, 400px, title=VVER-440)]] \\''Figure 7.: VVER-440 geometry in GUARDYAN'' 50 60 51 61 [wiki:GuarDyan_Publ next: Publications ]
