Release of OpenMC 0.13.0

Announcements
2

I’ve gotten a couple of questions from users on using DAGMC with OpenMC’s latest release.

One significant input change in this version is the re-implementation of DAGMC geometry as universes in OpenMC. This allows for use of mixed CSG/DAGMC geometry.

One side-effect of this update is that DAGMC models need to be specified in the geometry.xml file and the dagmc element in the settings.xml file can be removed. Updating to the new workflow should be possible using a geometry.xml file with the following contents:

<?xml version='1.0' encoding='utf-8'?>
<geometry>
  <dagmc_universe filename="dagmc.h5m" id="1" />
</geometry>

More information on the new DAGMC universe capability can be found here.