65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
import openmc
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from beavrs.builder import BEAVRS
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def find_assembly(assembly_name, wrap_geometry=True):
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"""Find a fuel assembly with some string name in the BEAVRS OpenMC model.
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This method extracts the fuel assembly and wraps it in an OpenMC Geometry.
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The returned geometry has reflective boundary conditions along all
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boundaries. The z-axis is bounded between z=200 and z=210 cm.
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Parameters
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----------
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assembly_name : str
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The name of the fuel assembly lattice
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wrap_geometry : bool
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If false, the fuel assembly Lattice is returned. If true, the fuel
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assembly Lattice is wrapped in an OpenMC Geometry and returned (default).
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Returns
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-------
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fuel_assembly
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The OpenMC Lattice or Geometry for the assembly or None if not found
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"""
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# Get OpenMC Lattices for the fuel assembly
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fuel_assembly = \
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beavrs.openmc_geometry.get_lattices_by_name(assembly_name)[0]
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# Wrap lattice in a Geometry if requested by the user
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if wrap_geometry:
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# Create a root Cell
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root_cell = openmc.Cell(name='root cell')
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root_cell.fill = fuel_assembly
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# Make mixed reflective / vacuum boundaries
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min_x = openmc.XPlane(x0=-10.70864, boundary_type='reflective')
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max_x = openmc.XPlane(x0=+10.70864, boundary_type='reflective')
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min_y = openmc.YPlane(y0=-10.70864, boundary_type='reflective')
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max_y = openmc.YPlane(y0=+10.70864, boundary_type='reflective')
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max_z = openmc.ZPlane(z0=197.5, boundary_type='reflective')
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min_z = openmc.ZPlane(z0=192.5, boundary_type='reflective')
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# Add boundaries to the root Cell
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root_cell.region = \
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+min_x & -max_x & +min_y & -max_y & +min_z & -max_z
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# Create a root Universe
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root_univ = openmc.Universe(universe_id=0, name='root universe')
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root_univ.add_cell(root_cell)
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# Create a Geometry
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fuel_assembly = openmc.Geometry(root_univ)
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return fuel_assembly
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# Instantiate a BEAVRS object
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beavrs = BEAVRS()
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# Extract fuel assembly of interest from BEAVRS model
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assm_name = 'Fuel 1.6% enr instr no BAs'
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openmc_geometry = find_assembly(assm_name)
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