Flat plate boundary layer

DNS of a spatially-developing supersonic turbulent boundary layer. Visualization of the turbulent structures along the flat plate using the λ2-criterion and colored by the streamwise velocity. DGSEM computation with ~1.5 billion degrees of freedom using up to 93,840 processors.

Side-view mirror

Vortical structures visualized with the Q criterion in the wake of a side-view mirror. DGSEM computation with N=7.

**Implosion**

Computed with Finite-Volume subcell shock capturing. A DG element is subdivided in N+1 FV subcells in each space dimension, where N=5 is the polynomial degree. Mesh: 67×67 elements, HLLE Riemann solver, Persson indicator to detect troubled cells. Left part shows density, right part shows the detected cells.

RKFD calculation with WENO5 reconstruction. The logarithm of the rest density is depicted.

Shock capturing with Finite Volume Subcells: Movie of Forward Facing Step example. DG-SEM computation with N=6 on a equidistant grid with h=1/50 (6300 elements in total). Top: in red the region of the Finite Volume Subcells. Bottom: Density,

Movie of the instantaneous velocity magnitude contours of the flow around a SD7003 airfoil and a movie of the Q criterion. DG-SEM simulation with 3.25million DOF and N=3, with a runtime of 0.8h on 2822 cores for one convection time.

Movie of a Frisbee at 10m/s and 300 rpm and 10° AoA and a movie of the Q criterion. DG-SEM simulation with 54,000 N=2 elements, with a runtime of 4h on 2048 cores for one rotation.

Movie of Large Eddy Simulation (LES) of the flow over a circular cylinder at Re=3900. De-aliased DG-SEM simulation with polynomial degree N=7, visualization with blender