Elmer

Elmer FEM 26.2.1 brings a new ADIOS2-based output solver, expanded solver capabilities, library and finite-element improvements, bug fixes, and updates across ElmerGrid, ElmerGUI, and Elmer/Ice.

Highlights:

• New ADIOS2OutputSolver for compact parallel output in ADIOS2/BP5 format, including Fides JSON export for Paraview.
• Enhancements to EMPort, MarchingODE, and CalcFields solvers, including improved port handling, eigenmode sorting, automatic shifting, timestep subdivision, multiple components, and nodal Lorenz force support.
• Finite element updates such as alternative second-order Nedelec bases, a third-order triangular H(curl) basis, new tetrahedral quadrature, and prism element fixes and support.
• Mesh and integration improvements, including binary mesh read/write support, temporal splitting for step-function integration, broader H(curl) Dirichlet support, and new Gauss point namespace options.
• Bug fixes for XML timestep formatting, passive interfaces, adaptive integration, mortar projectors, restart handling, MATC locale handling, halo initialization, and quadratic H(curl) approximation.
• ElmerGrid now supports binary mesh writing and element type 718; ElmerGUI adds tentative support for element type 718.
• Elmer/Ice gains grounding-line flux computation in 3D extruded simulations, GroundedMask and LimitedSolution initialization fixes, passive element fixes, and related test updates.
• Continuous integration and testing received many improvements, and some obsolete mortar projector code was removed.

New features:

• New vectorized and threaded Navier-Stokes solver with block preconditioning
• Beam element module to complete structural models
• Mixed element Poisson solver (with Hdiv basis)
• Large number of improvements for electromagnetics
• Coupled structural problems enables (e.g. shell-solid)
• Enable automatic elimination of conforming BCs
• Faster and improved view factor computation
• Better support for parametrized runs with Run Control and inline parameters
• And more!