FastS/IBM: Flow past a cylinder at Re=3900 with immersed boundary conditions
3D LES simulation of turbulent flow past a cylinder at Reynolds number Re=3900.
Mesh
The cylinder wall is modeled by immersed boundary conditions (IBC) with a resolution of 0.003 D (D is the cylinder diameter). Farfield conditions are set at 500 D and the wake is refined till 6 D. The spanwise length of the cylinder is equal to π D. The mesh contains 90M points.
Automatic octree mesh generation and IBC pre-processing are performed by Cassiopee (http://elsa.onera.fr/Cassiopee/). The Fast solver (https://w3.onera.fr/FAST/) is used to run the simulation with AUSM scheme.
More information in AIAA paper (January 2019, San Diego): "Validation of an immersed boundary method for compressible flows".