MOOSE Newsletter (December 2023)

Projected stateful material properties

The ProjectedStatefulMaterialStorageAction action system has been added to MOOSE. The action allows users to specify material properties that will be (componentwise) projected onto a finite element function basis to store the old and older state of the properties.

This is an alternative way of keeping an old material property state, which permits interpolation at new or changing quadrature point locations (encountered, for example, with mortar contact or adaptivity). Both nodal as well as elemental basis functions can be used for the projection. In the case of nodal (Lagrange) functions, nodal patch recovery will be used to compute the nodal degrees of freedom.

Transfers leveraging MeshDivisions

MultiAppGeneralFieldTransfer derived transfers can now use MeshDivisions to:

• spatially restrict both origin and target domains,

• match either origin or target divided regions to an application (usually a child), and

• match mesh division regions with the same index in the source and target region.

Distributing grid MeshDivisions using Positions

The CartesianGridDivision, CylindricalGridDivision and SphericalGridDivision can now be composed with a Positions object to distribute the centers of several grids on the Positions. For example, this new capability can be used to define nested lattices.