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Research Highlight 02.24

07.02.2024Acom

Parabolic AMR & gmsh meshes for Trixi.jl

Over the past year, the open-source Discontinuous Galerkin (DG) code Trixi.jl has been extended to feature adaptive mesh refinement (AMR) for hyperbolic-parabolic equations such as the compressible Navier-Stokes equations.

Furthermore, existing meshes such as generated by gmsh may now be used in Trixi.jl when exported to Abaqus .inp format.

This is especially useful since high-quality mesh generation is a nontrivial, resource-consuming process. Now, it is possible to use e.g. meshes provided by the NASA Turbulence research group.

This figure shows the density contour of a developing bow-shock around the SD7003 airfoil for a Mach 2 flow. Note that the shock is resolved relatively sharp due to the adaptively refined mesh cells. Density_AMR

In contrast, for a simulation without AMR the shock gets diffused out:

Density_NonAMR

Contact: Daniel Doehring