MOOSE Newsletter May 2022

MOOSE Improvements

The component HeatStructure2DCoupler was added to the Thermal hydraulics module, which allows 2D heat structures to be coupled via a heat transfer coefficient between two coincident boundaries.

More internal memory management uses smart pointers rather than raw new and delete
MeshBase, ExodusII, and mesh stitching now support element sets (which unlike subdomains specified with subdomain_id, can overlap)
Mesh stitching is now possible (via automatically temporarily serializing) a DistributedMesh. This is useful when building a smaller mesh in serial but distributing it before it gets enlarged by refinement or extrusion.
Triangulation improvements: - Support for specifying a fixed level of uniform refinement on each outer and/or hole boundary, then optionally disallowing further refinement - Mesh holes can be specified using other Mesh objects, for easier stitching later.
Abaqus mesh file input now supports TRI6 and QUAD8 elements
Support for more than 65,535 variables in a System
Node and Elem packed_range code now always unpacks to a mesh - This enables use of the more-efficient NBX communication algorithms, the push_ and pull_ parallel_vector_data methods in timpi/parallel_sync.h, with ranges of nodes and elements
Improvements to reduced_basis code
Various bug fixes and interface updates - Updating deprecated ExodusII API uses - Compatibility with PETSc 3.17 - Fix Eigen use of C++17-deprecated call
MetaPhysicL updates, for additional unit testing, better compatibility with some compilers and compiler warning settings, and support for std::isinf().