Adding important neutronics settings (#571)

armi/physics/neutronics/settings.py

@@ -37,6 +37,8 @@
 CONF_EXISTING_FIXED_SOURCE = "existingFixedSource"
 CONF_NUMBER_MESH_PER_EDGE = "numberMeshPerEdge"
 CONF_RESTART_NEUTRONICS = "restartNeutronics"
+CONF_OUTERS_ = "outers"
+CONF_INNERS_ = "inners"
 
 CONF_EPS_EIG = "epsEig"
 CONF_EPS_FSAVG = "epsFSAvg"
@@ -127,7 +129,7 @@ def defineSettings():
             CONF_BC_COEFFICIENT,
             default=0.0,
             label="Parameter A for generalized BC",
-            description="Value for the parameter A of the DIF3D generalized boundary "
+            description="Value for the parameter A of the generalized boundary "
             "condition.",
         ),
         setting.Setting(
@@ -227,6 +229,18 @@ def defineSettings():
             label="Restart neutronics",
             description="Restart global flux case using outputs from last time as a guess",
         ),
+        setting.Setting(
+            CONF_OUTERS_,
+            default=100,
+            label="Max Outer Iterations",
+            description="XY and Axial partial current sweep max outer iterations.",
+        ),
+        setting.Setting(
+            CONF_INNERS_,
+            default=0,
+            label="Inner Iterations",
+            description="XY and Axial partial current sweep inner iterations. 0 lets the neutronics code pick a default.",
+        ),
         setting.Setting(
             CONF_GRID_PLATE_DPA_XS_SET,
             default="dpa_EBRII_HT9",

armi/physics/neutronics/tests/test_neutronicsPlugin.py

@@ -21,6 +21,11 @@
 
 from armi.physics import neutronics
 from armi.physics.neutronics.const import CONF_CROSS_SECTION
+from armi.physics.neutronics.settings import (
+    CONF_OUTERS_,
+    CONF_INNERS_,
+    CONF_NEUTRONICS_KERNEL,
+)
 from armi.settings import caseSettings
 from armi.tests import TEST_ROOT
 from armi.tests.test_plugins import TestPlugin
@@ -62,6 +67,14 @@ def test_customSettingRoundTrip(self):
         cs.writeToYamlFile(fname)
         os.remove(fname)
 
+    def test_neutronicsSettingsLoaded(self):
+        """Check that various special neutronics-specifics settings are loaded"""
+        cs = caseSettings.Settings()
+
+        self.assertIn(CONF_INNERS_, cs)
+        self.assertIn(CONF_OUTERS_, cs)
+        self.assertIn(CONF_NEUTRONICS_KERNEL, cs)
+
 
 class NeutronicsReactorTests(unittest.TestCase):
     @classmethod