How do you balance aerodynamic efficiency with thermal management requirements?

Aero-thermal integration addresses the conflict between minimum airflow (best aero) and cooling needs. Approach includes: Mapping cooling requirements across drive cycles and conditions, sizing heat exchangers for thermal performance with acceptable pressure drop, designing efficient airflow paths minimizing drag penalty, implementing active grille shutters for adaptive control, using air-to-air heat rejection where possible, optimizing radiator positioning and inlet sizing, and managing underhood pressure for exhaust flow. Analysis combines 1D thermal models with CFD. Target is meeting cooling with minimum aero penalty; modern vehicles achieve 2-5 Cd counts improvement through active cooling flow management.