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Preparation for 0.12.0 release
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==================== | ||
What's New in 0.12.0 | ||
==================== | ||
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.. currentmodule:: openmc | ||
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------- | ||
Summary | ||
------- | ||
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This release of OpenMC includes an assortment of new features and many bug fixes. | ||
In particular, the :mod:`openmc.deplete` module has been heavily tested which | ||
has resulted in a number of usability improvements, bug fixes, and other | ||
enhancements. Energy deposition calculations, particularly for coupled | ||
neutron-photon simulations, have been improved as well. | ||
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Improvements in modeling capabilities continue to be added to the code, | ||
including the ability to rotate surfaces in the Python API, several new | ||
"composite" surfaces, a variety of new methods on :class:`openmc.Material`, | ||
unstructured mesh tallies that leverage the existing DAGMC infrastructure, | ||
effective dose coefficients from ICRP-116, and a new cell instance tally | ||
filter. | ||
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------------ | ||
New Features | ||
------------ | ||
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- All surfaces now have a `rotate` method that allows them to be rotated. | ||
- Several "composite" surfaces, which are actually composed of multiple surfaces | ||
but can be treated as a normal surface through the -/+ unary operators, have | ||
been added. These include: | ||
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- :class:`openmc.model.RightCircularCylinder` | ||
- :class:`openmc.model.RectangularParallelepiped` | ||
- :class:`openmc.model.XConeOneSided` (and equivalent versions for y- and z-axes) | ||
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- Various improvements related to depletion: | ||
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- The matrix exponential solver can now be configured through the `solver` | ||
argument on depletion integrator classes. | ||
- The :meth:`openmc.deplete.Chain.reduce` method can automatically reduce the | ||
number of nuclides in a depletion chain. | ||
- Depletion integrator classes now allow a user to specify timesteps in several | ||
units (s, min, h, d, MWd/kg). | ||
- :meth:`openmc.deplete.ResultsList.get_atoms` now allows a user to obtain | ||
depleted material compositions in atom/b-cm. | ||
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- Several new methods on :class:`openmc.Material`: | ||
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- The :meth:`openmc.Material.add_elements_from_formula` method allows a user | ||
to create a material based on a chemical formula. | ||
- :meth:`openmc.Material.add_element` now supports the `enrichment` argument for | ||
non-uranium elements when only two isotopes are naturally occurring. | ||
- :meth:`openmc.Material.add_element` now supports adding elements by name | ||
rather than by symbol. | ||
- The :meth:`openmc.Material.get_elements` method returns a list of elements | ||
within a material. | ||
- The :meth:`openmc.Material.mix_materials` method allows multiple materials to | ||
be mixed together based on atom, weight, or volume fractions. | ||
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- The acceptable number of lost particles can now be configured through | ||
:attr:`openmc.Settings.max_lost_particles` and | ||
:attr:`openmc.Settings.rel_max_lost_particles`. | ||
- Delayed photons produced from fission are now accounted for by default by | ||
scaling the yield of prompt fission photons. This behavior can be modified | ||
through the :attr:`openmc.Settings.delayed_photon_scaling` attribute. | ||
- A trigger can now be specified for a volume calculation via the | ||
:meth:`openmc.VolumeCalculation.set_trigger` method. | ||
- The :class:`openmc.stats.SphericalIndependent` and | ||
:class:`openmc.stats.CylindricalIndependent` classes allow a user to | ||
specify source distributions based on spherical or cylindrical coordinates. | ||
- Custom external source distributions can be used via the | ||
:attr:`openmc.Source.library` attribute. | ||
- Unstructured mesh class, :class:`openmc.UnstructuredMesh`, that can be used in | ||
tallies. | ||
- The :class:`openmc.CellInstanceFilter` class allows one or more instances of a | ||
repeated cell to be tallied. This is effectively a more flexible version of | ||
the existing :class:`openmc.DistribcellFilter` class. | ||
- The :func:`openmc.data.dose_coefficients` function provides effective dose | ||
coefficients from ICRP-116 and can be used in conjunction with | ||
:class:`openmc.EnergyFunctionFilter` in a tally. | ||
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--------- | ||
Bug Fixes | ||
--------- | ||
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- `Keep user-supplied prev_results on operator <https://github.com/openmc-dev/openmc/pull/1605>`_ | ||
- `Fix bug when S(a,b) tables appear in depletable material <https://github.com/openmc-dev/openmc/pull/1605>`_ | ||
- `DAGMC fix for implicit complement material assignment <https://github.com/openmc-dev/openmc/pull/1604>`_ | ||
- `Bug fix for tallying reaction rates in coupled n-p runs <https://github.com/openmc-dev/openmc/pull/1603>`_ | ||
- `Corrected issue with multiplicity matrix <https://github.com/openmc-dev/openmc/pull/1598>`_ | ||
- `Fix depletion with photon transport <https://github.com/openmc-dev/openmc/pull/1595>`_ | ||
- `Fix secondary photon creation <https://github.com/openmc-dev/openmc/pull/1591>`_ | ||
- `Bug fix for total xs plotting <https://github.com/openmc-dev/openmc/pull/1563>`_ | ||
- `Account for light nuclide production in depletion <https://github.com/openmc-dev/openmc/pull/1555>`_ | ||
- `Reset timer in depletion calculations <https://github.com/openmc-dev/openmc/pull/1539>`_ | ||
- `Fix for Model.run <https://github.com/openmc-dev/openmc/pull/1536>`_ | ||
- `Ensure NJOY output goes to specified directory <https://github.com/openmc-dev/openmc/pull/1522>`_ | ||
- `Fix bug preventing creating photon data <https://github.com/openmc-dev/openmc/pull/1489>`_ | ||
- `Fix bug when surface ID > 999999 <https://github.com/openmc-dev/openmc/pull/1486>`_ | ||
- `Fix bug for reading output settings in Settings.from_xml <https://github.com/openmc-dev/openmc/pull/1478>`_ | ||
- `Fix improve energy deposition for coupled neutron-photon <https://github.com/openmc-dev/openmc/pull/1449>`_ | ||
- `Use number of particles for tally normalization <https://github.com/openmc-dev/openmc/pull/1442>`_ | ||
- `Fix a number of problems related to photoatomic data <https://github.com/openmc-dev/openmc/pull/1425>`_ | ||
- `Fix cosine smearing for S(a,b) <https://github.com/openmc-dev/openmc/pull/1420>`_ | ||
- `Use relative distances for coincidence test in hex lattice <https://github.com/openmc-dev/openmc/pull/1414>`_ | ||
- `Fix RPATH for non-Debian linux systems <https://github.com/openmc-dev/openmc/pull/1411>`_ | ||
- `Fix mesh plotter energy filter bins <https://github.com/openmc-dev/openmc/pull/1409>`_ | ||
- `Fix memory leak <https://github.com/openmc-dev/openmc/pull/1395>`_ | ||
- `Fix volume allocation related to burnable materials <https://github.com/openmc-dev/openmc/pull/1392>`_ | ||
- `Fix tally mesh bug for short tracks <https://github.com/openmc-dev/openmc/pull/1387>`_ | ||
- `DAGMC void material assignment fix <https://github.com/openmc-dev/openmc/pull/1375>`_ | ||
- `Fix for Mesh __repr__ methods <https://github.com/openmc-dev/openmc/pull/1385>`_ | ||
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------------ | ||
Contributors | ||
------------ | ||
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This release contains new contributions from the following people: | ||
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- `Paul Cosgrove <https://github.com/ChasingNeutrons>`_ | ||
- `Steven Dargaville <https://github.com/stevendargaville>`_ | ||
- `Andrew Davis <https://github.com/makeclean>`_ | ||
- `Iurii Drobyshev <https://github.com/dryuri92>`_ | ||
- `Guillaume Giudicelli <https://github.com/GiudGiud>`_ | ||
- `Alec Golas <https://github.com/awgolas>`_ | ||
- `Avery Grieve <https://github.com/NuclearEngideer>`_ | ||
- `Sterling Harper <https://github.com/smharper>`_ | ||
- `Yuan Hu <https://github.com/YuanHu-PKU-KIT>`_ | ||
- `Yue Jin <https://github.com/kingyue737>`_ | ||
- `Andrew Johnson <https://github.com/drewejohnson>`_ | ||
- `Mikolaj Kowalski <https://github.com/Mikolaj-A-Kowalski>`_ | ||
- `Shikhar Kumar <https://github.com/shikhar413>`_ | ||
- `Jingang Liang <https://github.com/liangjg>`_ | ||
- `David Long <https://github.com/davidjohnlong>`_ | ||
- `Amanda Lund <https://github.com/amandalund>`_ | ||
- `Alex Lyons <https://github.com/alex-lyons>`_ | ||
- `Adam Nelson <https://github.com/nelsonag>`_ | ||
- `Ethan Peterson <https://github.com/eepeterson>`_ | ||
- `Sam Powell-Gill <https://github.com/sampug>`_ | ||
- `Ariful Islam Pranto <https://github.com/AI-Pranto>`_ | ||
- `Simon Richards <https://github.com/simondrichards>`_ | ||
- `Gavin Ridley <https://github.com/gridley>`_ | ||
- `Paul Romano <https://github.com/paulromano>`_ | ||
- `Jonathan Shimwell <https://github.com/Shimwell>`_ | ||
- `Patrick Shriwise <https://github.com/pshriwise>`_ | ||
- `John Tramm <https://github.com/jtramm>`_ | ||
- `Paul P.H. Wilson <https://github.com/gonuke>`_ | ||
- `Jiankai Yu <https://github.com/rockfool>`_ |
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.. toctree:: | ||
:maxdepth: 1 | ||
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0.12.0 | ||
0.11.0 | ||
0.10.0 | ||
0.9.0 | ||
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