MOOSE Newsletter (July 2021)

Compressible Navier-Stokes Finite Volume (CNSFV)

Through the navier_stokes module, MOOSE now has the ability to model transonic and supersonic flows using either Harten, Lax, van Leer, Contact (HLLC) or Kurganov-Tadmor discretization strategies for the advective flux. The compressible Euler equations are implemented using the finite volume method. We have also implemented a variety of slope limiters, including van Leer, min-mod, first and second order upwind, central differencing, and QUICK, that can be used when interpolating quantities from cell centroids to faces. We do not recommend this compressible fluid flow implementation for low Mach number flows as results can be overly diffusive when the solution is not smooth, e.g. in high Rayleigh number natural convection simulations.

Bug Fixes and Minor Enhancements

Minor fixes to links in the documentation, thanks to feedback in #18425

libMesh-level changes

Mimic stl and boost constructors in our allocators
Try changing max order for L2 families
Add LumpedMassMatrix class
Test custom FE reinit
$LIBMESH_BENCHMARK selection of benchmarking examples
RB: skip reinit when there are no DOFs on Elem
Command-line override of default Metis-vs-Parmetis
init_names() at more points
Fix FE side unit tests with --enable-complex
Begin contains_vertex_of with node equality tests
chunked_mapvector storage option
Weaken partitioner_test for SFC on 8+ processors
Bugfix for PR libmesh/libmesh#2940
Revert "interior_parent fix on distributed refined multi-elem_dim meshes"
interior_parent fix on distributed refined multi-elem_dim meshes
RB EIM update
Fix for deprecated warning in SLEPc not-quite-3.15
Use pool allocator in mapvector
Check for gdb in command line in print_trace when compiling with no gdb backtrace by default