Add a GUI script to the fuel cycle example

doc/content/examples/fuel_cycle/index.md

@@ -142,4 +142,9 @@ lines are model results.
 
 !listing test/tests/fuel-cycle/fuel_cycle.i
 
+A python-based graphical interactive script is available at [/test/tests/fuel_cycle/fuel_cycle_gui.py](/scripts/fuel_cycle_gui.py) as a demonstration of the various effects of 
+individual parameters. To use it, navigate to the scripts directory and run the script. All of the input parameters for the model can be changed by editing the associated entry, 
+then clicking the "Run" button. Once the simulation has run, checkboxes will appear for each system-level tritium inventory. Time units can also be adjusted by selecting the appropriate
+timescale.
+
 !bibtex bibliography

scripts/fuel_cycle_gui.py

@@ -0,0 +1 @@
+../test/tests/fuel-cycle/fuel_cycle_gui.py

test/tests/fuel-cycle/fuel_cycle.i

@@ -371,7 +371,7 @@
   [residence8] #FCU
     type = ConstantPostprocessor
     execute_on = 'TIMESTEP_BEGIN INITIAL LINEAR NONLINEAR'
-    value =  1
+    value = 1
     #value = 4680 # 1.3 h as per Day
     #value = 5 h Coleman
     #value = 8640 Abdou
@@ -471,7 +471,20 @@
     values = 'T_BZ T_TES T_FW T_DIV T_HX T_CPS T_VAC T_FCU T_ISS T_EXO T_STO'
   []
 []
-
+[UserObjects]
+  [terminator]
+    type = Terminator
+    expression = 'T_STO < 0'
+    fail_mode = 'HARD'
+    message = 'Tritium in storage has been depleted'
+  []
+  [terminator2]
+    type = Terminator
+    expression = 'total_tritium < 0'
+    fail_mode = 'HARD'
+    message = 'Tritium in system has been depleted'
+  []
+[]
 # The tritium breeding ratio is not directly given in the paper,
 # but is specified as a "five year" doubling time from the initial
 # inventory. As such, it may be necessary to force the simulation to
@@ -492,7 +505,7 @@
   type = Transient
   start_time = 0
   dtmin = 1
-  end_time = 864000000.0
+  end_time = 946080000.0
   [TimeStepper]
     type = IterationAdaptiveDT
     growth_factor = 1.4
@@ -506,7 +519,7 @@
   nl_abs_tol = 1e-14
 []
 [Outputs]
-  hide = 'T_BZ T_CPS T_DIV T_EXO T_FCU T_FW T_HX T_ISS T_STO T_TES T_VAC'
+  hide = "BZ_HX_leak_fraction CPS_FW_leak_fraction CPS_efficiency FCU_STO_fraction HX_CPS_leak_fraction HX_EXO_leak_fraction HX_FW_leak_fraction ISS_EXO_leak_fraction P_DIV_leak_fraction P_FW_leak_fraction TBR TES_efficiency T_BZ T_CPS T_DIV T_EXO T_FCU T_FW T_HX T_ISS T_STO T_TES T_VAC epsilon1 epsilon10 epsilon11 epsilon2 epsilon3 epsilon4 epsilon5 epsilon6 epsilon7 epsilon8 epsilon9 residence1 residence10 residence2 residence3 residence4 residence5 residence6 residence7 residence8 residence9 tdecay tritium_burn_fraction tritium_burn_rate tritium_fueling_efficiency"
   csv = true
   console = false
 []