Code Features

• solves compressible Euler equations in 1D, 2D and 3D
• explicit and implicit time integration
• flux preconditioning ensures correct behavior at low Mach numbers
• other low Mach number schemes, e.g. AUSM⁺-up
• works for low and high Mach numbers on the same grid
• several solvers for the linear system: BiCGSTAB, GMRES, Multigrid, direct
• gravity solver (monopole, Multigrid)
• radiation in the diffusion limit
• general equation of state
• general nuclear reaction network

Performance

Using hybrid parallelization (MPI and OpenMP), SLH works on the largest supercomputers. It was optimized to scale up to half a million cores in extreme scaling workshops at Leibniz-Rechenzentrum Garching and at Forschungszentrum Jülich.

Curvilinear Grid

SLH can work with arbitrary curvilinear meshes, using a rectangular computational mesh. This keeps the code almost as simple as if using a Cartesian mesh, while having the flexibility to adapt the code to the geometry of the problem.