Airflow Sciences has performed numerous wind tunnel and CFD studies of vehicles with the primary goal of drag reduction. For passenger cars, trains, and trucks, low drag means better fuel economy.

Wind tunnel testing of
3/10-scale double stack container cars
National Research Council of Canada
30' x 30' wind tunnel
Aerodynamic force measurements
for cross winds of 0° to 90°

CFD results of surface pressure
on double stack container cars