openmc.UnstructuredMesh¶

class openmc.UnstructuredMesh(filename, library, mesh_id=None, name='', length_multiplier=1.0)[source]¶

A 3D unstructured mesh

New in version 0.12.

Changed in version 0.12.2: Support for libMesh unstructured meshes was added.

Parameters

filename (str) – Location of the unstructured mesh file
library ({'moab', 'libmesh'}) – Mesh library used for the unstructured mesh tally
mesh_id (int) – Unique identifier for the mesh
name (str) – Name of the mesh
length_multiplier (float) – Constant multiplier to apply to mesh coordinates

Variables

id (int) – Unique identifier for the mesh
name (str) – Name of the mesh
filename (str) – Name of the file containing the unstructured mesh
length_multiplier (float) – Multiplicative factor to apply to mesh coordinates
library ({'moab', 'libmesh'}) – Mesh library used for the unstructured mesh tally
output (bool) – Indicates whether or not automatic tally output should be generated for this mesh
specified_length_multiplier (bool) – Indicates whether a non-unity length multiplier has been applied to this mesh
volumes (Iterable of float) – Volumes of the unstructured mesh elements
total_volume (float) – Volume of the unstructured mesh in total
centroids (Iterable of tuple) – An iterable of element centroid coordinates, e.g. [(0.0, 0.0, 0.0), (1.0, 1.0, 1.0), …]

classmethod from_hdf5(group)[source]¶

Create mesh from HDF5 group

classmethod from_xml_element(elem)[source]¶

Generate unstructured mesh object from XML element

to_xml_element()[source]¶

Return XML representation of the mesh

write_data_to_vtk(filename, datasets, volume_normalization=True)[source]¶

Map data to the unstructured mesh element centroids: to create a VTK point-cloud dataset.

Parameters

filename (str) – Name of the VTK file to write.
datasets (dict) – Dictionary whose keys are the data labels and values are the data sets.
volume_normalization (bool) – Whether or not to normalize the data by the volume of the mesh elements