Model builder

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Click a shape to edit it · drag to orbit · scroll to zoom · wind blows left to right

Wind tunnel

Wind30 m/s

Flow slice (CFD)

Cut at Z0.0

Show

Detail

Open the Flow slice tab.

Whole-model estimate

Flow slice solves the air in a side-view cut (2D lattice-Boltzmann with a turbulence model and a moving floor), so underbody flow, diffusers and wing-ground interaction show up. Move the cut across the model with Cut at Z. It cannot show 3D effects such as wingtip vortices, wheel wakes or flow around the sides, and curved surfaces are blocky, so drag on streamlined shapes reads high. Compare designs, don't certify them. 1 unit = 1 m.