# External Aerodynamics Cases Flow around smooth, curved bluff bodies represented with the immersed boundary method. These cases validate drag, surface pressure and vortex-shedding (Strouhal) behaviour across Reynolds-number regimes. ```{toctree} --- maxdepth: 1 --- 01_flow_over_sphere/README.md 02_flow_over_cylinder/README.md 03_flat_plate_boundary_layer/README.md ```