A McLaren 720S and its GT3 racing version in the same virtual wind tunnel: one lattice Boltzmann simulation on a laptop GPU, 73 million cells at about 250 km/h. Every flow shot comes from that simulation: swirl, arrows, oil-flow streaks and the slow wake. Wheels held still and a scaled Reynolds number, so it shows how the shapes treat the air, not drag numbers.
Car models: “mclaren 720s” by amogusstrikesback2 and “2020 McLaren 720S GT3” by Dave Love, CC BY 4.0 (simplified for simulation). Flow solver: FluidX3D by Moritz Lehmann. Road scenes: Poly Haven (CC0). Not affiliated with McLaren.
