Transportation


Surface Vehicles Aerodynamics

Technical Applications

Summary

Surface vehicle aerodynamics provide the scientific foundations for developing lower drag shapes for automobiles, buses, trucks, and trains.

Characteristics

As vehicle speed increases, aerodynamic drag becomes a major contributor to vehicle inefficiency and increased fuel consumption. The same phenomena that lead to increased drag-airflow separation and unsteady eddy formation-also lead to higher levels of flow noise and vehicle control problems.

ImpactEconomy

Aerodynamically designed vehicles can be both quiet and more efficient than existing vehicles, although current vehicles already incorporate efficient aerodynamic shapes. Given that drag reduction translates into reduced energy consumption, more efficient vehicles and ultimately lower demand for foreign oil.