What’s New in 0.10.0¶
This release of OpenMC includes several new features, performance improvements,
and bug fixes compared to version 0.9.0. Notably, a C API has been added that
enables in-memory coupling of neutronics to other physics fields, e.g., burnup
calculations and thermal-hydraulics. The C API is also backed by Python bindings
in a new
openmc.capi package. Users should be forewarned that the C API
is still in an experimental state and the interface is likely to undergo changes
in future versions.
The Python API continues to improve over time; several backwards incompatible changes were made in the API which users of previous versions should take note of:
To indicate that nuclides in a material should be treated such that elastic scattering is isotropic in the laboratory system, there is a new
mat = openmc.Material() mat.add_nuclide('H1', 1.0) mat.isotropic = ['H1']
To treat all nuclides in a material this way, the
Material.make_isotropic_in_lab()method can still be used.
Auto-generated unique IDs for classes now start from 1 rather than 10000.
This is the last release of OpenMC that will support Python 2.7. Future releases of OpenMC will require Python 3.4 or later.
There are no special requirements for running the OpenMC code. As of this release, OpenMC has been tested on a variety of Linux distributions and Mac OS X. Numerous users have reported working builds on Microsoft Windows, but your mileage may vary. Memory requirements will vary depending on the size of the problem at hand (mostly on the number of nuclides and tallies in the problem).
Rotationally-periodic boundary conditions
C API (with Python bindings) for in-memory coupling
Improved correlation for Uranium enrichment
Support for partial S(a,b) tables
Improved handling of autogenerated IDs
Many performance/memory improvements
937469: Fix energy group sampling for multi-group simulations
a149ef: Ensure mutable objects are not hashable
2c9b21: Preserve backwards compatibility for generated HDF5 libraries
8047f6: Handle units of division for tally arithmetic correctly
0beb4c: Compatibility with newer versions of Pandas
f124be: Fix generating 0K data with openmc.data.njoy module
0c6915: Bugfix for generating thermal scattering data
61ecb4: Fix bugs in Python multipole objects
This release contains new contributions from the following people: