Multi-Body platooning aerodynamics in StarCCM+
A full RANS CFD parametric study of multi-vehicle close-proximity aerodynamics across 18 configurations, using the DrivAer reference geometry in Estate, Fastback and Notchback variants — each in smooth and detailed underbody form.
Built and validated geometry, executed mesh-independence study, applied the K-ε turbulence model (benchmarked at –0.56% error vs. experimental data), and post-processed velocity fields, surface pressures, skin friction and wake structures. Findings quantified inter-body Cd and Cl deltas across all 18 runs, identifying configurations delivering 16–20% drag reduction in trailing bodies.
Configurations
Drag Benefit
Velocity
Cd Delta