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#!/usr/bin/python3
import openmc
import math
import argparse
import hashlib
import sys
import time
# KRUSTY Model in OpenMC
# C.Moore, <connor.moore@psi.ch>
############ COMMAND LINE ARGUMENTS ############
cli_parser = argparse.ArgumentParser(
prog="KRUSTY Heat Pipe Study",
description="Program to investigate the reactivity effect of heat pipe saturation on the KRUSTY reactor."
)
#cli_parser.add_argument("-t","--technique",default="none",choices=["none","vwh","rpt","rrpt"],help="What homogenization technique to use (if any) [none/vwh/rpt/rrpt], default none")
cli_parser.add_argument("-n","--na-height",default="0.8",type=float,help="Radius for RPT or RRPT homogenization [cm], default 0.8 cm. In the case of RRPT, this is the inner radius.")
cli_args = cli_parser.parse_args()
############ INTPUT-OUTPUT MAPPING ############
path = sys.argv[0]
with open(path, "rb") as file:
contents = file.read()
filehash = hashlib.md5(contents).hexdigest()
print("="*60)
print(f"Run date CET: {time.ctime()}")
print(f"Input file MD5: {filehash}")
print(f"Input arguments: {cli_args}")
print("="*60)
############ MATERIALS ############
mat_list = []
mat_temp_global = 900
mat_temp_fuel = 900
## 100 - Structural Materials ##
mat_haynes230 = openmc.Material(100,name='Structural HAYNES 230')
mat_haynes230.add_element('Ni',57,'wo')
mat_haynes230.add_element('Cr',22,'wo')
mat_haynes230.add_element('W',14,'wo')
mat_haynes230.add_element('Mo', 2,'wo')
mat_haynes230.add_element('Fe', 1.875,'wo')
mat_haynes230.add_element('Co', 3.125,'wo')
mat_haynes230.temperature = mat_temp_global
mat_haynes230.set_density('g/cm3',8.97)
mat_list.append(mat_haynes230)
mat_ss316 = openmc.Material(101,name='Structural SS316')
mat_ss316.add_element('C', 9.12187E-02+1.01457E-03, 'ao')
mat_ss316.add_nuclide('Si28', 1.10957E+00, 'ao')
mat_ss316.add_nuclide('Si29', 5.61820E-02, 'ao')
mat_ss316.add_nuclide('Si30', 3.72944E-02, 'ao')
mat_ss316.add_nuclide('Cr50', 7.94742E-01, 'ao')
mat_ss316.add_nuclide('Cr52', 1.53260E+01, 'ao')
mat_ss316.add_nuclide('Cr53', 1.73763E+00, 'ao')
mat_ss316.add_nuclide('Cr54', 4.32580E-01, 'ao')
mat_ss316.add_nuclide('Mn55', 1.77454E+00, 'ao')
mat_ss316.add_nuclide('Fe54', 4.11552E+00, 'ao')
mat_ss316.add_nuclide('Fe56', 6.39783E+01, 'ao')
mat_ss316.add_nuclide('Fe57', 1.46483E+00, 'ao')
mat_ss316.add_nuclide('Fe58', 1.95315E-01, 'ao')
mat_ss316.add_nuclide('Ni58', 5.91824E+00, 'ao')
mat_ss316.add_nuclide('Ni60', 2.26262E+00, 'ao')
mat_ss316.add_nuclide('Ni61', 9.79589E-02, 'ao')
mat_ss316.add_nuclide('Ni62', 3.11211E-01, 'ao')
mat_ss316.add_nuclide('Ni64', 7.88874E-02, 'ao')
mat_ss316.add_nuclide('Mo92', 3.21318E-02, 'ao')
mat_ss316.add_nuclide('Mo94', 2.00286E-02, 'ao')
mat_ss316.add_nuclide('Mo95', 3.44709E-02, 'ao')
mat_ss316.add_nuclide('Mo96', 3.61161E-02, 'ao')
mat_ss316.add_nuclide('Mo97', 2.06783E-02, 'ao')
mat_ss316.add_nuclide('Mo98', 5.22477E-02, 'ao')
mat_ss316.add_nuclide('Mo100', 2.08518E-02, 'ao')
mat_ss316.temperature = mat_temp_global
mat_ss316.set_density('atom/b-cm', 8.58870E-02)
mat_list.append(mat_ss316)
mat_air = openmc.Material(102,name="Core Air")
mat_air.add_nuclide('H1', 1.41615E+01, 'ao')
mat_air.add_nuclide('H2', 2.12456E-03, 'ao')
mat_air.add_element('C', 1.17053E-02+1.30189E-04, 'ao')
mat_air.add_nuclide('N14', 6.15481E+01, 'ao')
mat_air.add_nuclide('N15', 2.28569E-01, 'ao')
mat_air.add_nuclide('O16', 2.36230E+01+4.73602E-02, 'ao')
mat_air.add_nuclide('O17', 9.47204E-03, 'ao')
mat_air.add_nuclide('Ar36', 1.23939E-03, 'ao')
mat_air.add_nuclide('Ar38', 2.31686E-04, 'ao')
mat_air.add_nuclide('Ar40', 3.66299E-01, 'ao')
mat_air.temperature = mat_temp_global
mat_air.set_density('g/cm3', 0.5)
mat_list.append(mat_air)
## 200 - Core Materials ##
mat_fuel = openmc.Material(200,name='Fuel U-10Mo')
mat_fuel.add_element('C', 6.19354E-01+6.88872E-03,'ao')
mat_fuel.add_nuclide('Mo92', 2.49068E+00,'ao')
mat_fuel.add_nuclide('Mo94', 1.55250E+00,'ao')
mat_fuel.add_nuclide('Mo95', 2.67188E+00,'ao')
mat_fuel.add_nuclide('Mo96', 2.79947E+00,'ao')
mat_fuel.add_nuclide('Mo97', 1.60285E+00,'ao')
mat_fuel.add_nuclide('Mo98', 4.04995E+00,'ao')
mat_fuel.add_nuclide('Mo100', 1.61627E+00,'ao')
mat_fuel.add_nuclide('U234', 8.45363E-01,'ao')
mat_fuel.add_nuclide('U235', 7.69214E+01,'ao')
mat_fuel.add_nuclide('U236', 3.81533E-01,'ao')
mat_fuel.add_nuclide('U238', 4.44178E+00,'ao')
mat_fuel.temperature = mat_temp_fuel
mat_fuel.set_density('atom/b-cm', 4.96130E-02)
mat_list.append(mat_fuel)
mat_hp_na = openmc.Material(201,name="Heat Pipe Sodium Coolant")
mat_hp_na.add_element("Na",1)
mat_hp_na.temperature = mat_temp_global
mat_hp_na.set_density("g/cc",0.763)
mat_list.append(mat_hp_na)
mat_beo = openmc.Material(202,name="BeO Reflector")
mat_beo.add_nuclide('Be9', 4.99528E+01,'ao')
mat_beo.add_nuclide('O16', 4.99042E+01+1.00046E-01,'ao')
mat_beo.add_nuclide('O17', 2.00099E-02,'ao')
mat_beo.add_nuclide('S32', 2.24316E-02,'ao')
mat_beo.add_nuclide('S33', 1.77054E-04,'ao')
mat_beo.add_nuclide('S34', 9.93896E-04,'ao')
mat_beo.add_nuclide('S36', 4.72141E-06,'ao')
mat_beo.temperature = mat_temp_global
mat_beo.set_density('atom/b-cm', 0.135648)
mat_beo.add_s_alpha_beta("c_Be_in_BeO")
mat_beo.add_s_alpha_beta("c_O_in_BeO")
mat_list.append(mat_beo)
mat_b4c = openmc.Material(203,name="B4C Control Rods")
mat_b4c.add_nuclide('B10',4,'ao')
mat_b4c.add_element('C',1,'ao')
mat_b4c.temperature = mat_temp_global
mat_b4c.set_density('g/cm3',2.52)
mat_list.append(mat_b4c)
materials = openmc.Materials(mat_list)
materials.export_to_xml()
############ GEOMETRY ############
geo_hp_pitch = 5.2
geo_z_abs_bot = openmc.ZPlane(z0=0.0,boundary_type="vacuum")
geo_z_core_bot = openmc.ZPlane(z0=10.16)
geo_z_core_top = openmc.ZPlane(z0=35.16)
geo_z_abs_top = openmc.ZPlane(z0=45.32,boundary_type="vacuum")
geo_z_region = +geo_z_abs_bot & -geo_z_abs_top
## Central Air Cylinder ##
geo_air_cyl = openmc.ZCylinder(r=1.9939, x0=0.0, y0=0.0)
geo_air_region = -geo_air_cyl & +geo_z_core_bot
geo_air_cell = openmc.Cell(name="Inner Core Air", region=geo_air_region, fill=mat_air)
## Fuel ##
geo_fuel_cyl = openmc.ZCylinder(r=5.4991, x0=0.0, y0=0.0)
geo_fuel_region = -geo_fuel_cyl & +geo_air_cyl & -geo_z_core_top & +geo_z_core_bot
geo_fuel_cell = openmc.Cell(name="Fuel Block", region=geo_fuel_region, fill=mat_fuel)
## BeO Inner Reflectors ##
# Bottom Reflector
geo_beo_lower_region = -geo_fuel_cyl & -geo_z_core_bot
geo_beo_lower_cell = openmc.Cell(name="Lower BeO Reflector", region=geo_beo_lower_region, fill=mat_beo)
# Top reflector
geo_beo_upper_region = +geo_air_cyl & -geo_fuel_cyl & +geo_z_core_top
geo_beo_upper_cell = openmc.Cell(name="Upper BeO Reflector", region=geo_beo_upper_region, fill=mat_beo)
## Radial Layers ##
# Air, SS316, Air, BeO
geo_rad_cyl = [openmc.ZCylinder(r=dia/2, x0=0.0, y0=0.0) for dia in [12.7, 13.3, 14.11, 38.40]]
geo_rad_cyl[3].boundary_type="vacuum"
geo_rad_cells = [openmc.Cell(name="Intermediate Core Air",region=+geo_fuel_cyl&-geo_rad_cyl[0],fill=mat_air),
openmc.Cell(name="Core SS316 Cell",region=+geo_rad_cyl[0]&-geo_rad_cyl[1],fill=mat_ss316),
openmc.Cell(name="Outer Core Air",region=+geo_rad_cyl[1]&-geo_rad_cyl[2],fill=mat_air),
openmc.Cell(name="Outer BeO Reflector",region=+geo_rad_cyl[2],fill=mat_beo)]
# Export simplified universe without heat pipes
geo_rad_universe = openmc.Universe(name="Simplified Radial Universe",cells=[geo_air_cell,geo_fuel_cell,geo_beo_lower_cell,geo_beo_upper_cell]+geo_rad_cells)
## Heat Pipes ##
geo_hp_cyl = [openmc.ZCylinder(r=dia/2, x0=0.0, y0=0.0) for dia in [1.092, 1.270]]
geo_hp_unit_cell = [openmc.Cell(name="Heat Pipe Coolant Cell",region=-geo_hp_cyl[0],fill=mat_hp_na),
openmc.Cell(name="Heat Pipe Wall Cell",region=+geo_hp_cyl[0],fill=mat_haynes230)]
#openmc.Cell(name="Heat Pipe Surrounding Cell",region=+geo_hp_cyl[1],fill=mat_air)]
geo_hp_unit_universe = openmc.Universe(name="Heat Pipe Universe",cells=geo_hp_unit_cell)
# Pattern around the core
geo_hp_steps = [math.pi*theta/180 for theta in range(0,360,45)]
geo_hp_regions = [openmc.ZCylinder(r=geo_hp_cyl[1].r,
x0=geo_hp_pitch*math.cos(theta),
y0=geo_hp_pitch*math.sin(theta)
) for theta in geo_hp_steps]
geo_hp_cells = [openmc.Cell(name=f"Heat Pipe {num}",region=-space,fill=geo_hp_unit_universe) for num,space in enumerate(geo_hp_regions, start=1)]
for cell, region in zip(geo_hp_cells, geo_hp_regions):
cell.translation = (region.x0, region.y0, 0.0)
geo_hp_universe = openmc.Universe(name="Heat Pipes Universe",cells=geo_hp_cells)
# Combine universes
geo_hp_comb_cell = openmc.Cell(name="Combined Heat Pipes Cell",region=openmc.Union(-cyl for cyl in geo_hp_regions),fill=geo_hp_universe)
geo_rad_comb_cell = openmc.Cell(name="Combined Radial Layers Cell",region=~openmc.Union(-cyl for cyl in geo_hp_regions),fill=geo_rad_universe)
geo_root_universe = openmc.Universe(name="Root Universe",cells=[geo_rad_comb_cell,geo_hp_comb_cell])
geo_clip_cell = openmc.Cell(name="Clipped Root Universe Cell",region=-geo_rad_cyl[3],fill=geo_root_universe)
geo_clip_universe = openmc.Universe(name="Clipped Root Universe",cells=[geo_clip_cell])
geo_object = openmc.Geometry(geo_clip_universe)
geo_object.export_to_xml()
## Settings ##
set_obj = openmc.Settings()
set_obj.particles = 10000
set_obj.batches = 1500
set_obj.inactive = 100
set_obj.temperature = {"method": "interpolation"}
set_src = openmc.IndependentSource()
set_src.space = openmc.stats.CylindricalIndependent(
r = openmc.stats.Uniform(geo_air_cyl.r,geo_fuel_cyl.r),
z = openmc.stats.Uniform(geo_z_core_bot.z0,geo_z_core_top.z0),
phi = openmc.stats.Uniform(0.0,2*math.pi),
origin = (0.0,0.0,geo_z_core_bot.z0)
)
set_src.track = [(1,1,i) for i in range(1,20)]
set_src.max_events = 2000
set_obj.export_to_xml()
# Run!
openmc.run()
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