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OpenMC 0.13.0

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@paulromano paulromano released this 14 Feb 16:37
· 2839 commits to develop since this release
v0.13.0
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This release of OpenMC includes several noteworthy and unique features. Most importantly, mesh-based weight windows have been added and work with all supported mesh types (regular, rectilinear, cylindrical, spherical, and unstructured). Other additions include torus surfaces, an ability to place CAD-based geometries in universes, a feature to export/import physical properties, and a filter for particle time.

There is one breaking changing in the Python API. The openmc.deplete.Operator class used to accept Geometry and Settings objects as its first two arguments; users now need to pass a Model class instead.

The minimum supported Python version is now 3.6.

New Features

  • Variance reduction using mesh-based weight windows is now possible with the WeightWindows class.
  • Users can now model axis-aligned tori using the XTorus, YTorus, and ZTorus classes.
  • DAGMC CAD-based geometries can now be placed in a universe using DAGMCUniverse, allowing users to combine CSG and CAD-based geometry in a single model.
  • The C/C++ API has two new functions openmc_properties_export and openmc_properties_import with corresponding Python API bindings, openmc.lib.export_properties and openmc.lib.import_properties. These functions allow physical properties (temperatures, densities, material compositions) to be written to an HDF5 file and re-used for subsequent simulations.
  • A new openmc.stats.PowerLaw univariate distribution
  • The capabilities of the Model class have been substantially expanded (e.g., the Model.deplete, Model.plot_geometry, and Model.rotate_cells methods).
  • A new TimeFilter class that allows tallies to be filtered by the particle's time, which is now tracked.
  • The Source class now allows you to specify a time distribution.
  • The new CylindricalMesh and SphericalMesh classes can be used for mesh tallies over cylidrical and spherical meshes, respectively.
  • Geometry plotting, which used to produce the files in the unusual .ppm format, now produces .png files by default.

Bug Fixes

Contributors

This release contains new contributions from the following people:

Contributors

jeffhammond, paulromano, and 16 other contributors
Assets 3
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