Adding 10k pebble OpenMC model and generation script.

10k_pebbles/README.md

+
+
+# Files
+
+## dat_to_csv.py
+
+Used to convert the initial data file for the pebble centers to a CSV format.
+
+## openmc_model.py
+
+Creates an OpenMC model using the pebble centers found in the pebble_centers.txt file.

10k_pebbles/dat_to_csv.py

+
+import numpy as np
+
+header_length = 8
+
+with open('11145_pebble_yuhsiang_E3p5M_peb.11k.dat', 'r') as fh:
+
+    for i in range(header_length):
+        fh.readline()
+
+    centers = np.fromfile(fh, sep=' ', dtype=float)
+
+centers = centers.reshape((centers.size // 3, 3))
+np.savetxt('centers.txt', centers)

10k_pebbles/materials.xml

+<?xml version='1.0' encoding='utf-8'?>
+<materials>
+  <material depletable="true" id="1" name="m_fuel - uranium oxycarbide - triso partciles">
+    <density units="g/cm3" value="10.5" />
+    <nuclide name="U234" wo="0.03565284" />
+    <nuclide name="U235" wo="17.790767159999998" />
+    <nuclide name="U238" wo="71.75358" />
+    <nuclide name="C0" wo="1.8" />
+    <nuclide name="O16" wo="8.616527990092724" />
+    <nuclide name="O17" wo="0.003472009907274255" />
+  </material>
+  <material id="2" name="m_graphite_c_buffer - triso partciles">
+    <density units="g/cm3" value="1.0" />
+    <nuclide ao="1.0" name="C0" />
+    <sab name="c_Graphite" />
+  </material>
+  <material id="3" name="m_graphite_pyc - triso particles">
+    <density units="g/cm3" value="1.87" />
+    <nuclide ao="1.0" name="C0" />
+    <sab name="c_Graphite" />
+  </material>
+  <material id="4" name="sic - triso partciles">
+    <density units="g/cm3" value="3.2" />
+    <nuclide ao="1.0" name="C0" />
+    <nuclide ao="0.9222968" name="Si28" />
+    <nuclide ao="0.0468316" name="Si29" />
+    <nuclide ao="0.0308716" name="Si30" />
+  </material>
+  <material id="5" name="m_graphite_matrix - triso particles">
+    <density units="g/cm3" value="1.6" />
+    <nuclide ao="1.0" name="C0" />
+    <sab name="c_Graphite" />
+  </material>
+  <material id="6" name="m_graphite_inner - pebble inner zone">
+    <density units="g/cm3" value="1.59368" />
+    <nuclide ao="1.0" name="C0" />
+    <sab name="c_Graphite" />
+  </material>
+  <material id="7" name="m_graphite_outer - pebble outer zone">
+    <density units="g/cm3" value="1.74" />
+    <nuclide ao="1.0" name="C0" />
+    <sab name="c_Graphite" />
+  </material>
+  <material id="8" name="m_flibe - 2LiF-BeF2">
+    <density units="kg/m3" value="1962.13354" />
+    <nuclide ao="1.9999" name="Li7" />
+    <nuclide ao="9.999999999998899e-05" name="Li6" />
+    <nuclide ao="1.0" name="Be9" />
+    <nuclide ao="4.0" name="F19" />
+  </material>
+</materials>

10k_pebbles/plots.xml

+<?xml version='1.0' encoding='utf-8'?>
+<plots>
+  <plot basis="xy" color_by="material" filename="plot1" id="1" type="slice">
+    <origin>0 0 0</origin>
+    <width>112.29461186082898 112.29461186082898</width>
+    <pixels>1000 1000</pixels>
+    <color id="1" rgb="165 42 42" />
+    <color id="2" rgb="176 196 222" />
+    <color id="3" rgb="0 0 255" />
+    <color id="4" rgb="255 165 0" />
+    <color id="5" rgb="0 255 255" />
+    <color id="6" rgb="0 191 255" />
+    <color id="7" rgb="0 0 128" />
+    <color id="8" rgb="255 255 0" />
+  </plot>
+  <plot basis="xy" color_by="material" filename="plot2" id="2" type="slice">
+    <origin>0 0 1</origin>
+    <width>112.29461186082898 112.29461186082898</width>
+    <pixels>1000 1000</pixels>
+    <color id="1" rgb="165 42 42" />
+    <color id="2" rgb="176 196 222" />
+    <color id="3" rgb="0 0 255" />
+    <color id="4" rgb="255 165 0" />
+    <color id="5" rgb="0 255 255" />
+    <color id="6" rgb="0 191 255" />
+    <color id="7" rgb="0 0 128" />
+    <color id="8" rgb="255 255 0" />
+  </plot>
+  <plot basis="xy" color_by="material" filename="plot3" id="3" type="slice">
+    <origin>0 0 1</origin>
+    <width>112.29461186082898 112.29461186082898</width>
+    <pixels>1000 1000</pixels>
+    <color id="1" rgb="165 42 42" />
+    <color id="2" rgb="176 196 222" />
+    <color id="3" rgb="0 0 255" />
+    <color id="4" rgb="255 165 0" />
+    <color id="5" rgb="0 255 255" />
+    <color id="6" rgb="0 191 255" />
+    <color id="7" rgb="0 0 128" />
+    <color id="8" rgb="255 255 0" />
+  </plot>
+  <plot basis="xz" color_by="material" filename="plot4" id="4" type="slice">
+    <origin>0 0 0.013685704999996773</origin>
+    <width>112.29461186082898 112.29461186082898</width>
+    <pixels>1000 1000</pixels>
+    <color id="1" rgb="165 42 42" />
+    <color id="2" rgb="176 196 222" />
+    <color id="3" rgb="0 0 255" />
+    <color id="4" rgb="255 165 0" />
+    <color id="5" rgb="0 255 255" />
+    <color id="6" rgb="0 191 255" />
+    <color id="7" rgb="0 0 128" />
+    <color id="8" rgb="255 255 0" />
+  </plot>
+</plots>

10k_pebbles/settings.xml

+<?xml version='1.0' encoding='utf-8'?>
+<settings>
+  <run_mode>eigenvalue</run_mode>
+  <particles>50000</particles>
+  <batches>250</batches>
+  <inactive>50</inactive>
+  <source strength="1.0">
+    <space type="fission">
+      <parameters>-56.14730593041449 -56.14730593041449 -25.15211374 56.14730593041449 56.14730593041449 25.179485149999998</parameters>
+    </space>
+  </source>
+  <temperature_default>573</temperature_default>
+  <temperature_method>interpolation</temperature_method>
+  <temperature_multipole>true</temperature_multipole>
+  <temperature_range>300.0 1500.0</temperature_range>
+  <temperature_tolerance>1000.0</temperature_tolerance>
+  <volume_calc>
+    <domain_type>material</domain_type>
+    <domain_ids>1</domain_ids>
+    <samples>10000000</samples>
+    <lower_left>-1.4 -1.4 -1.4</lower_left>
+    <upper_right>1.4 1.4 1.4</upper_right>
+  </volume_calc>
+  <material_cell_offsets>false</material_cell_offsets>
+</settings>