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4.6 KiB
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99 lines
4.6 KiB
ReStructuredText
====================
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What's New in 0.13.2
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====================
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.. currentmodule:: openmc
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-------
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Summary
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-------
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This release of OpenMC includes several bug fixes, performance improvements for
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complex geometries and depletion simulations, and other general enhancements.
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Notably, a capability has been added to compute the photon spectra from decay of
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unstable nuclides. Alongside that, a new :data:`openmc.config` configuration
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variable has been introduced that allows easier configuration of data sources.
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Additionally, users can now perform cell or material rejection when sampling
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external source distributions.
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------------------------------------
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Compatibility Notes and Deprecations
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------------------------------------
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- If you are building against libMesh for unstructured mesh tally support,
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version 1.6 or higher is now required.
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- The ``openmc.stats.Muir`` class has been replaced by a
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:func:`openmc.stats.muir` function that returns an instance of
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:class:`openmc.stats.Normal`.
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------------
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New Features
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------------
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- The :meth:`openmc.Material.get_nuclide_atom_densities` method now takes an
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optional ``nuclide`` argument.
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- Functions/methods in the :mod:`openmc.deplete` module now accept times in
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Julian years (``'a'``).
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- The :meth:`openmc.Universe.plot` method now allows a pre-existing axes object
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to be passed in.
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- Performance optimization for geometries with many complex regions.
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- Performance optimization for depletion by avoiding deepcopies and caching
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reaction rates.
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- The :class:`openmc.RegularMesh` class now has a
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:meth:`~openmc.RegularMesh.from_domain` classmethod.
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- The :class:`openmc.CylindricalMesh` class now has a
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:meth:`~openmc.CylindricalMesh.from_domain` classmethod.
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- Improved method to condense diffusion coefficients from the :mod:`openmc.mgxs`
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module.
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- A new :data:`openmc.config` configuration variable has been introduced that
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allows data sources to be specified at runtime or via environment variables.
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- The :class:`openmc.EnergyFunctionFilter` class now supports multiple
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interpolation schemes, not just linear-linear interpolation.
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- The :class:`openmc.DAGMCUniverse` class now has ``material_names``,
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``n_cells``, and ``n_surfaces`` attributes.
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- A new :func:`openmc.data.decay_photon_energy` function has been added that
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returns the energy spectrum of photons emitted from the decay of an unstable
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nuclide.
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- The :class:`openmc.Material` class also has a new
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:attr:`~openmc.Material.decay_photon_energy` attribute that gives the decay
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photon energy spectrum from the material based on its constituent nuclides.
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- The :class:`openmc.deplete.StepResult` now has a
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:meth:`~openmc.deplete.StepResult.get_material` method.
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- The :class:`openmc.Source` class now takes a ``domains`` argument that
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specifies a list of cells, materials, or universes that is used to reject
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source sites (i.e., if the sampled sites are not within the specified domain,
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they are rejected).
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---------
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Bug Fixes
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---------
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- `Delay call to Tally::set_strides <https://github.com/openmc-dev/openmc/pull/2183>`_
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- `Fix reading reference direction from XML for angular distributions <https://github.com/openmc-dev/openmc/pull/2204>`_
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- `Fix erroneous behavior in Material.add_components <https://github.com/openmc-dev/openmc/pull/2205>`_
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- `Fix reading thermal elastic data from ACE <https://github.com/openmc-dev/openmc/pull/2226>`_
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- `Fix reading source file with time attribute <https://github.com/openmc-dev/openmc/pull/2228>`_
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- `Fix conversion of multiple thermal scattering data files from ACE <https://github.com/openmc-dev/openmc/pull/2232>`_
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- `Fix reading values from wwinp file <https://github.com/openmc-dev/openmc/pull/2242>`_
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- `Handle possibility of .ppm file in Universe.plot <https://github.com/openmc-dev/openmc/pull/2251>`_
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- `Update volume calc types to mitigate overflow issues <https://github.com/openmc-dev/openmc/pull/2270>`_
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------------
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Contributors
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------------
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- `Lewis Gross <https://github.com/lewisgross1296>`_
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- `Andrew Johnson <https://github.com/drewejohnson>`_
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- `Miriam Kreher <https://github.com/mkreher13>`_
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- `James Logan <https://github.com/jlogan03>`_
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- `Jose Ignacio Marquez Damien <https://github.com/marquezj>`_
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- `Josh May <https://github.com/joshmay1>`_
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- `Patrick Myers <https://github.com/myerspat>`_
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- `Adam Nelson <https://github.com/nelsonag>`_
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- `April Novak <https://github.com/aprilnovak>`_
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- `Ethan Peterson <https://github.com/eepeterson>`_
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- `Gavin Ridley <https://github.com/gridley>`_
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- `Paul Romano <https://github.com/paulromano>`_
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- `Patrick Shriwise <https://github.com/pshriwise>`_
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- `Jonathan Shimwell <https://github.com/Shimwell>`_
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- `Olek Yardas <https://github.com/yardasol>`_
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