Merge pull request #647 from paulromano/periodic

Add periodic boundary conditions

tests/test_periodic/inputs_true.dat

@@ -0,0 +1 @@
+af589996f2930337afe34ba9894098ff5efe3b29b6e927117220b718bf29b630ffdbc931754d465a8e8100125a8aa997dbe10aab322b43f69d59710573996a6d

tests/test_periodic/results_true.dat

@@ -0,0 +1,2 @@
+k-combined:
+1.040109E+00 6.527490E-02

tests/test_periodic/tallies.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<tallies>
+  <mesh id="1">
+    <type>regular</type>
+    <lower_left>-200. -1e50</lower_left>
+    <upper_right>200. 1e50</upper_right>
+    <dimension>50 1</dimension>
+  </mesh>
+  <tally id="1">
+    <estimator>collision</estimator>
+    <filter type="mesh" bins="1" />
+    <scores>fission</scores>
+  </tally>
+</tallies>

tests/test_periodic/test_periodic.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+
+import os
+import sys
+sys.path.insert(0, os.pardir)
+from testing_harness import PyAPITestHarness
+import openmc
+
+
+class PeriodicTest(PyAPITestHarness):
+    def _build_inputs(self):
+        # Define materials
+        water = openmc.Material(1)
+        water.add_nuclide('H-1', 2.0)
+        water.add_nuclide('O-16', 1.0)
+        water.add_s_alpha_beta('HH2O', '71t')
+        water.set_density('g/cc', 1.0)
+
+        fuel = openmc.Material(2)
+        fuel.add_nuclide('U-235', 1.0)
+        fuel.set_density('g/cc', 4.5)
+
+        materials = openmc.Materials((water, fuel))
+        materials.default_xs = '71c'
+        materials.export_to_xml()
+
+        # Define geometry
+        x_min = openmc.XPlane(1, x0=-5., boundary_type='periodic')
+        x_max = openmc.XPlane(2, x0=5., boundary_type='periodic')
+        x_max.periodic_surface = x_min
+
+        y_min = openmc.YPlane(3, y0=-5., boundary_type='periodic')
+        y_max = openmc.YPlane(4, y0=5., boundary_type='periodic')
+
+        z_min = openmc.ZPlane(5, z0=-5., boundary_type='reflective')
+        z_max = openmc.ZPlane(6, z0=5., boundary_type='reflective')
+        z_cyl = openmc.ZCylinder(7, x0=-2.5, y0=2.5, R=2.0)
+
+        outside_cyl = openmc.Cell(1, fill=water, region=(
+            +x_min & -x_max & +y_min & -y_max & +z_min & -z_max & +z_cyl))
+        inside_cyl = openmc.Cell(2, fill=fuel, region=+z_min & -z_max & -z_cyl)
+        root_universe = openmc.Universe(0, cells=(outside_cyl, inside_cyl))
+
+        geometry = openmc.Geometry()
+        geometry.root_universe = root_universe
+        geometry.export_to_xml()
+
+        # Define settings
+        settings = openmc.Settings()
+        settings.particles = 1000
+        settings.batches = 4
+        settings.inactive = 0
+        settings.source = openmc.Source(space=openmc.stats.Box(
+            *outside_cyl.region.bounding_box))
+        settings.export_to_xml()
+
+
+if __name__ == '__main__':
+    harness = PeriodicTest('statepoint.4.h5')
+    harness.main()

tests/testing_harness.py

@@ -133,9 +133,10 @@ class TestHarness(object):
 
     def _cleanup(self):
         """Delete statepoints, tally, and test files."""
-        output = glob.glob(os.path.join(os.getcwd(), 'statepoint.*.*'))
+        output = glob.glob(os.path.join(os.getcwd(), 'statepoint.*.h5'))
         output.append(os.path.join(os.getcwd(), 'tallies.out'))
         output.append(os.path.join(os.getcwd(), 'results_test.dat'))
+        output.append(os.path.join(os.getcwd(), 'summary.h5'))
         for f in output:
             if os.path.exists(f):
                 os.remove(f)